2018-55 Building Envelope Preventive Maintenance - Biznet

Bid #2018-55 / Building Envelope Preventive Maintenance of 12

INVITATION TO BID

The Town of Fairfield (Town) on behalf of its Board of Education (BOE) is seeking competitive bids from qualified contractors to furnish and provide all labor, materials, and equipment necessary, to perform building envelope preventive maintenance, including proper offsite disposal of all surplus material, located at (17) Fairfield Public Schools’ facilities. Work shall consist of, but not limited to, re-pointing of masonry; through wall flashing repair; painting; patching; caulking; brick replacement; repair of spalled concrete; plant removal; cleaning and sealing; concrete coating and power washing, and any necessary abatement of hazardous materials that may be present. NOTE: No single project at any given location shall exceed the lump sum amount of $30,000.00 in its entirety. Schedule – The work schedule will be determined on a case-by-case basis and will be required to be performed during each summer vacation (last week of June through last week of August) and other vacation periods. Some work may be performed while school is in session if determined that the work will be non-disruptive (without noise, odor, dust, etc.) to students. TERM / RENEWAL OF CONTRACT The Town of Fairfield intends to award a (12) month contract with four (4) one-year optional renewal terms.

On (60) days advance written notice, the Town may renew the 2018 contract per the same terms and conditions, including a mutually agreed upon optional cost of living allowance (COLA) increase reflecting industry standards.

Each renewal term may be extended at the sole discretion of the Town of Fairfield. In the event that the Contractor does not perform the work in accordance with the specifications and/or scope of

services, the Town reserves the right to terminate the contract with two (2) weeks’ written notice. REQUESTS FOR INFORMATION (RFI) / ADDENDA Direct requests to: Town of Fairfield, Purchasing Department Attention: Phillip Ryan, Buyer 725 Old Post Road, Fairfield, CT 06824 [email protected]

NOTE: Written requests for information will not be accepted after 12:00PM on Friday, 2nd March, 2018.

Response will be in the form of an addendum that will be posted approximately Wednesday, 7th March (close of business) to the Town of Fairfield Purchasing Department website: www.fairfieldct.org/purchasing

It is the responsibility of each bidder to retrieve addenda from the website. Any contact about this bid between a Bidder and any other Town official and/or department manager and/or Town of Fairfield employee, other than as set forth above, may be grounds for disqualification of that Bidder. No questions or clarifications shall be answered by phone, in person or in any other manner than specified above. Addenda will not be mailed, e-mailed or faxed out. SCOPE OF WORK Perform the work as detailed in the following appended sections, prepared by Silver Petrucelli Associates, Hamden, CT.

1. Cast-In-Place Concrete – Section 03013

2. Unit Masonry – Section 04900

3. Flashing and Sheet Metal – Section 07600

4. Sealants – Section 07900

5. Painting – Section 09900

Contractor shall:

a) Provide a written report identifying deficiencies detected at any facility, including recommendations for remediation.

b) Perform removal of all materials, equipment and components associated with any item to be replaced and/or repaired as stated in the scope of work and/or specifications.

c) Provide proper disposal offsite for all surplus material items not required for salvage.

Note there are no drawings or sketches associated with this contract.

mailto:[email protected]

http://www.fairfieldct.org/purchasing


REQUIREMENTS

1. All equipment and materials supplied and/or installed shall be new and of current manufacture, and shall meet or exceed all specifications described herein. Any deviations must be indicated with the proposal response.

2. The Contractor may be required upon request to provide proof of all applicable licensing and certification.

3. List all subcontractors to be employed as part of the contract including labor rates with Proposal Bid Form.

4. The Contractor shall remain the single-point-of-contact for all warranty on workmanship, materials and services, and must provide emergency repair services.

5. Provide the Town with references regarding similar size and scope projects performed.

6. The Town of Fairfield will not accept receipt of any equipment or services (installed or otherwise) unless all specifications stated in the bid document have been accommodated, and/or approved by written consent. Contractor shall be required to correct any nonconforming issues, at no expense to the Town of Fairfield.

7. Bidders are required to provide details of any exceptions to the scope of work. Details must be submitted separately and attached to the Proposal Bid Form.

8. The Town of Fairfield reserves the right to award the bid on an item-by-item basis to bidders/suppliers based on lowest price, comparable equipment, broadest range of services and/or responsive work schedule; or any combination of these criteria. The Town also reserves the right to modify (add, alter or delete) quantity items as deemed necessary.

9. The Contractor may be required to submit all descriptive literature and operational manuals for all items being supplied and/or installed, and must be an authorized dealer and/or distributor for all items as per specifications.

10. Upon award of bid, the BOE Maintenance Supervisor will arrange the work schedule with the Contractor.

11. The Contractor will be responsible for securing all necessary permits, state and local, and as required by the Town of Fairfield. The Town will waive its application and building permit fees for Town of Fairfield projects.

12. Any modifications to equipment design, configuration and layout shall be approved in writing, prior to award of bid.

13. The Contractor shall be responsible for any repairs to buildings resulting from damages incurred when performing the work.

14. All surplus material and related items must be disposed of properly by Contractor, unless otherwise stated in writing.

15. The Town of Fairfield is dedicated to waste reduction and the practice of using and promoting the use of recycled and environmentally preferable products. Bidders are encouraged to submit bids that are printed double-sided (except for the signed proposal page) on recycled paper, and to use paper dividers to organize bids for review. All bid pages should be secured with a binder clip, staple or elastic band, and may not be submitted in plastic binders or covers, nor may the bid contain any plastic inserts or pages.

Price Increases Prices must remain firm from date of award through the first (12) months of the contract period. After the initial (12) months of the contract period, prices will be subject to increase at the twelve (12) month minimum intervals, in labor costs. The Town reserves the right to reject any requested price increase deemed excessive in the opinion of the Town and cancel the contract. The Contractor must submit a formal request for an increase to the Purchasing Department, no later than thirty (30) days prior to the effective price increase date. The request shall contain the date the increase takes effect. No retroactive price increases will be allowed. Quantities Item quantities where provided may be changed at the sole discretion of the Town. The Town shall have the flexibility to add or delete any location or item, or to adjust the work schedule as necessary. NOTE: No single project at any given location shall exceed the lump sum amount of $30,000.00 in its entirety. Cancellation of Contract The Town reserves the right to cancel this contract due to unsatisfactory service and/or noncompliance with the terms set forth herein, or when the service is no longer required due to insufficient funds or restructuring of a facility, whereupon the Town shall provide the Contractor with two (2) weeks’ written notice.


FACILITY LOCATIONS

Burr Elementary, 1960 Burr Street Dwight Elementary, 1600 Redding Road Holland Hill Elementary, 105 Meadowcroft Road Jennings Elementary, 31 Palm Drive McKinley Elementary, 60 Thompson Street Mill Hill Elementary, 635 Mill Hill Terrace North Stratfield Elementary, 190 Putting Green Road Osborn Hill Elementary, 760 Stillson Road Riverfield Elementary, 1625 Mill Plain Road

Sherman Elementary, 250 Fern Street Stratfield Elementary, 1407 Melville Avenue

Fairfield Woods Middle, 1115 Fairfield Woods Road Roger Ludlowe Middle, 689 Unquowa Road Tomlinson Middle, 200 Unquowa Road Fairfield Ludlowe High, 785 Unquowa Road Fairfield Warde High, 755 Melville Avenue Walter Fitzgerald Campus / Alternative High, 108 Biro Street

NOTE: No single project at any given location shall exceed the lump sum amount of $30,000.00 in its entirety. ASBESTOS ABATEMENT / HAZARDOUS MATERIALS

Work shall include the removal and proper disposal of all asbestos containing materials (ACM) where identified in caulking and other areas. Abatement shall be performed by workers meeting requirements of OSHA 1926.1101 for Class I, II, III and IV work. Provide costs in bid proposal where requested for removal and proper disposal of such materials. Information: http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_id=10862&p_table=STANDARDS CHECKLIST The following must be submitted with proposal:

Cover page, completed and signed. Addenda acknowledged on Bid Proposal Form or submitted if requested. Hourly rates and percentage mark up on materials for any additional work that may be requested. List of references where projects performed within the past three years of comparable size and scope. List and details of all sub-contractors, identifying each trade, hourly rates and Tax ID numbers. Bid Proposal Form.

http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_id=10862&p_table=STANDARDS


PROPOSAL BID FORM (1 of 2)

PROPOSAL TO: Town of Fairfield, Purchasing Department First Floor, Sullivan Independence Hall 725 Old Post Road, Fairfield, Connecticut 06824 I, ___________________________________________________________have received the following contract documents,

1. BID Document #2018-55 2. All sections listed under Scope of Work 3. Posted addenda numbered though posted at www.fairfieldct.org/purchasing and have

included their provisions in my proposal.

I shall supply all labor, materials, equipment, technical service, taxes, insurance, permits, etc., in accordance with all of the contract documents, to perform building envelope preventive maintenance per the specifications, including abatement of asbestos containing materials (ACM) as required.

UNIT PRICES

Unit price is an amount applicable during the duration of the contract as a price per unit of measurement for materials, equipment, or services, or a portion of the work, added to or deducted by appropriate modification, if the scope of work or estimated quantities of the work required by the contact documents are increased or decreased. Unit prices to apply to all work within 60 feet of grade.

Unit prices include all necessary labor, material, delivery, mobilization, installation, disposal, insurance, applicable taxes, overheat and profit.

Owner reserves the right to reject Contractor’s measurement of work-in-place that involves use of established unit prices and to have this work measured, at Owner’s expense, by an independent surveyor acceptable to both parties. NOTE: No single project at any given location shall exceed the lump sum amount of $30,000.00 in its entirety.

Unit pricing shall be based on minimum unit of measure (UOM) allowance of 100 square feet, 100 linear feet and 24 hours.

1. Re-pointing of Masonry: ($____________) /square foot 2. Through Wall Flashing Repair: ($____________) /linear foot

NOTE: This work includes removal and replacement of three (3) bricks above the flashing. 3. Caulking without abatement:

3.1 Control joints (vertical): ($____________) /linear foot

3.2 Sidewalks: ($____________) /linear foot

3.3 Windows (alum to masonry): ($____________) /linear foot 4. Caulking with abatement:

4.1 Control joints (vertical): ($____________) /linear foot

4.2 Sidewalks: ($____________) /linear foot

4.3 Windows (alum to masonry): ($____________) /linear foot 5. Brick Replacement: ($____________) /square foot

_________________________________________ _____________________________ _____________________ Name of Authorized Representative Title Date

http://www.fairfieldct.org/purchasing


PROPOSAL BID FORM (2 of 2)

6. Spalled Concrete: ($____________) /square foot 7. Clean and Seal: ($____________) /square foot 8. Concrete Coating: ($____________) /square foot 9. Power Washing: ($____________) /square foot

LABOR & MARK-UP

Unit costs for labor for work not covered by unit prices above:

1. Mason: ($____________) /hour 2. Laborer: ($____________) /hour 3. Caulker: ($____________) /hour

Mark-up percentage for materials not covered by unit prices above:

1. Actual cost plus ____________ % mark-up

Unit prices include all necessary labor, material, delivery, mobilization, installation, disposal, insurance, applicable taxes, overheat and profit. Unit pricing shall be based on minimum unit of measure (UOM) allowance of 100 square feet, 100 linear feet and 24 hours (three man days). Unit prices to apply to all work within 60 feet of grade. EXPLORATORY WORK The following shall be requested per an as-needed basis: Perform removal of brick/block/masonry/flashing and determine the type of construction and installed material that may be cause for water penetration inside building envelope. Perform exploratory work and at conclusion of inspection, reinstall all removed components or replace as necessary. Patch and repair all disturbed material to prevent further weather damage. ($____________) /hour Rate shall be fixed and based upon minimum _______ hours to perform the work. Provide full and complete report, identifying cause of damage and recommended solution to prevent further occurrence. ($____________) /report NOTE: No single project at any given location shall exceed the lump sum amount of $30,000.00 in its entirety. Provide information regarding number of years in business, size of firm, and facility location.

Number of years in business: _____ Number of employees: _____ (full time) _____ (part time)

Facility Location: _____________________________________________ (Town) _____ (State)

The Bidder hereby certifies that any and all defects, errors, inconsistencies or omissions of which he/she is aware, either directly or by notification from any sub-bidder or material supplier found in the Contract Documents are listed herewith in this Bid Form.

_________________________________________ _____________________________ _____________________ Name of Authorized Representative Title Date


PURCHASING AUTHORITY TOWN OF FAIRFIELD

INSTRUCTIONS FOR BIDDERS TERMS AND CONDITIONS OF BID

BID PROPOSALS Bid proposals are to be submitted in a sealed envelope and clearly marked on the outside “BID #2018-55” including all outer packaging such as DHL, FedEx, UPS, etc. All prices and notations must be printed in ink or typewritten. No erasures are permitted. Bid proposals are to be in the office of the Purchasing Authority, First Floor, Independence Hall, 725 Old Post Road, Fairfield, Connecticut, prior to date and time specified, at which time they will be publicly opened. RIGHT TO ACCEPT / REJECT AFTER REVIEW OF ALL FACTORS, TERMS AND CONDITIONS, INCLUDING PRICE, THE PURCHASING AUTHORITY OF THE TOWN OF FAIRFIELD RESERVES THE RIGHT TO REJECT ANY AND ALL BIDS, OR ANY PART THEREOF, OR WAIVE DEFECTS IN SAME, OR ACCEPT ANY PROPOSAL DEEMED TO BE IN THE BEST INTEREST OF THE TOWN OF FAIRFIELD. QUESTIONS Questions concerning conditions, bidding guidelines and specifications should only be directed in writing to:

Mr. Phillip Ryan, Buyer: [email protected]

Inquiries must reference date of bid opening, requisition or contract number, and must be received no later than as indicated in the bid documents prior to date of bid opening. Failure to comply with these conditions will result in the bidder waiving the right to dispute the bid specifications and conditions. PRICES Prices quoted must be firm, for acceptance by the Town of Fairfield, for a period of ninety (90) days. Prices shall include all applicable duties. Bidders shall be required to deliver awarded items at prices quoted in their original bid. F.O.B. DESTINATION Prices quoted shall be Net – Delivered to destination. Bids quoting other than F.O.B. Destination may be rejected. PERMITS The contractor will be responsible for securing all necessary permits, state and local, as required by the Town of Fairfield. The Town will waive its application and permit fees for Town of Fairfield projects. PAYMENT PROCEDURES No voucher, claim or charge against the Town shall be paid without the approval of the Fiscal Officer for correctness and legality. Appropriate checks shall be drawn by the Fiscal Officer for approved claims or charges and they shall be valid without countersignature unless the Board of Selectmen otherwise prescribed. PAYMENT PERIOD The Town of Fairfield shall put forth its best effort to make payment within thirty days (30) after delivery of the item acceptance of the work, or receipt of a properly completed invoice, whichever is later. Payment period shall be net thirty days (30) unless otherwise specified. For projects that do not require a performance or bid bond, The Town of Fairfield reserves the right to retain five percent (5%) of total bid amount, which is payable ninety (90) days after final payment or acceptance of the work. THE CONTRACTOR The Contractor for the work described shall be thoroughly familiar with the requirements of all specifications, and the actual physical conditions of various job sites. The submission of a proposal shall be construed as evidence that the Contractor has examined the actual job conditions, requirements, and specifications. Any claim for labor, equipment, or materials required, or difficulties encountered which could have been foreseen had such an examination been carefully made will not be recognized. ASSIGNMENT OF CONTRACT No contract may be assigned or transferred without the consent of the Purchasing Authority.

mailto:[email protected]


AWARD OF BIDS Contracts and purchases will be made or entered into with the lowest responsible bidder meeting specifications, except as otherwise specified in the invitation. If more than one item is specified in the invitation, the Town of Fairfield reserves the right to determine the low bidder on an individual basis or on the basis of all items included in the Invitation for Bids, unless otherwise expressed by the Town. BOND REQUIREMENT – NON-RESIDENT CONTRACTORS

1. Non-resident contractors are required to deposit with the Department of Revenue Services a sum equivalent to 5% of the total contract value, as assurance that personal property taxes and/or any other State taxes assessed and due the State during the contract will be paid.

2. If this surety is not deposited with the State, the Town is required to deduct and submit to the State 5% of the total contract value.

GUARANTEE Equipment, materials and/or work executed shall be guaranteed for a minimum period of one (1) year against defective material and workmanship. The cost of all labor, materials, shipping charges and other expenses in conjunction with the replacement of defective equipment, and/or unsatisfactory work, shall be borne by the Contractor. CATALOGUE REFERENCE Unless expressly stated otherwise, any and all reference to commercial types, sales, trade names and catalogues are intended to be descriptive only and not restrictive; the intent is to indicate the kind and quality of the articles that will be acceptable. Bids on other equivalent makes, or with reference to other catalogue items will be considered. The bidder is to clearly state exactly what will be furnished. Where possible and feasible, submit an illustration, descriptive material, and/or product sample. OSHA The bidder will certify all equipment complies with all regulations and conditions stipulated under the Williams-Steiger Occupational Safety and Health Act of 1971, as amended. The successful bidder will further certify that all items furnished under this project will conform and comply with Federal and State of Connecticut OSHA standards. The successful bidder will agree to indemnify and hold harmless the Town of Fairfield for any and all damages that may be assessed against the Town. LIFE CYCLE COSTING Where applicable, Life Cycle Costing will be used as a criterion for awarding bids. This is a method of calculating total cost of ownership of an item over the life of the product, which may include operation and maintenance expenses, transportation, salvage value, and/or disposal costs. INSURANCE The Contractor shall not commence any work under the Contract until all insurance required by this section has been obtained and Certificates of Insurance and any other evidence of required coverage requested by the Town, including a copy of the policy itself, have been received and approved by the Town. Such policies shall stipulate that no coverage can be changed or canceled, including for non-payment of premium , unless the Town has had thirty (30) days prior notice in writing. Certificates of renewals or changes in policies shall be delivered to the Owner at least thirty (30) days prior to the expiration of the policy. All insurance issuers chosen by the Contractor must be licensed to do business in the State of Connecticut and rated A- or better by A.M. Best Rating Services. The Town always reserves the right to reject insurance companies, if approved insurance policies cannot be provided the contract shall be terminated. The insurance requirements set forth below are minimum limits of coverage only and in no way limit the Contractor’s liability. The following insurance is required to be maintained in full force until all work required by the contract has been fully completed, except that Products/Completed Operations coverage shall be maintained for five (5) years.


Worker’s Compensation Insurance: The Contractor shall carry Worker’s Compensation and Employer’s Liability Insurance in the form and in such amounts as may be currently required to comply with the Labor Laws of the State of Connecticut. Automobile Insurance: The Contractor shall carry and maintain during the life of the Contract a policy with a combined single limit of $2,000,000 and rider CA9948 or equivalent. This policy shall include all liability of the Contractor arising from the operation of all self-owned motor vehicles used in the performance of the Contract; and shall also include a “non-Ownership” provision covering the operation of motor vehicles not owned by the Contractor, but used in the performance of the work. Commercial General Liability:

Bodily Injury and Property Damage $2,000,000 Products/Completed Operations $2,000,000

This policy shall include Subcontractor's Liability coverage, protecting the Contractor and the Town against liability arising out of the activities of Subcontractors engaged by him in the performance of the work. Umbrella Policy: An umbrella policy in the amount of $5,000,000, covering general liability, auto liability, and employer liability is required. Pollution Liability Insurance: Where applicable, a policy in the amount of $5,000,000 including coverage for transport and other offsite risks. Such policy must be given to the Town for review and determination of acceptability before an award will be made. Waiver of Subrogation: Waiver of subrogation is required on all policies. Additional Insureds: The following entities shall be named as additional insureds on the General Contractor's and Subcontractors’ Commercial General Liability, Pollution Liability, and Umbrella. The Town of Fairfield, Fairfield Board of Education, its officers, officials, employees, agents, Boards, and Commissions shall be named as Additional Insureds. The coverage shall be primary and non-contributory and contain no special limitations on the scope of protection afforded to the Town of Fairfield. A waiver of subrogation applies under general liability, auto liability and workers compensation. Subcontractor’s Insurance: Each Subcontractor engaged by the Contractor to perform any work under the Contract shall obtain all insurance required of the Contractor in the same amounts and subject to the same provisions specified above for the Contractor, including the Additional Insured requirement. Certificates of Insurance shall be submitted to the Contractor and the Town and approved by the Town, before commencing any work. HOLD HARMLESS Contractor shall defend, indemnify, and hold harmless the Town of Fairfield, its officers, employees, agents or volunteers, from and against any and all claims and demands of any nature for any loss, damage or injury which any person may suffer by reason of, or in any way arising out of, this Agreement, unless caused by the sole negligence of the Town. FEDERAL, STATE, AND LOCAL LAWS All applicable Federal, State and local laws, rules and regulations of all authorities having jurisdiction over the locality of the project shall apply to the contract and are deemed to be included herein. If the total amount of the project, including any current or future change orders, exceeds $100,000.00 all work is to be done in accordance with Connecticut Department of Labor (CT-DOL) rules and regulations. More information may be obtained from: www.ctdol.state.ct.us The Davis-Bacon and Related Acts, shall apply to contractors and subcontractors performing on federally funded or assisted contracts in excess of $2,000 for the construction, alteration, or repair (including painting and decorating) of public buildings or public works. More information may be obtained from: https://www.dol.gov/whd/govcontracts/dbra.htm NOTE: The Town shall apply the most current wage decision applicable at the time of contract award.

http://www.ctdol.state.ct.us/

https://www.dol.gov/whd/govcontracts/dbra.htm


CONFLICT OF INTEREST No officer or employee or member of any elective or appointive board, commission or committee of the Town, whether temporary or permanent, shall have or acquire any financial interest gained from a successful bid, direct or indirect, aggregating more than one hundred dollars ($100.00), in any project, matter, contract or business within his/her jurisdiction or the jurisdiction of the board, commission, or committee of which he/she is a member. Nor shall the officer / employee / member have any financial interest, direct or indirect, aggregating more than one hundred dollars ($100.00) in any contract or proposed contract for materials or services to be furnished or used in connection with any project, matter or thing which comes under his/her jurisdiction or the jurisdiction of the board, commission, committee of which he/she is a member. SCOPE OF WORK/SITE INSPECTIONS The bidder declares that the scope of the work has been thoroughly reviewed and any questions resolved (see above for name and number of individual to contact for questions). If applicable, the bidder further declares that the site has been inspected as called for in the specifications (q.v.). EXCEPTION TO SPECIFICATIONS No protest regarding the validity or appropriateness of the specifications or of the Invitation for Bids will be considered, unless the protest is filed in writing with the Purchasing Authority prior to the closing date for the bids. All bid proposals rendered shall be considered meeting the attached specifications unless exceptions are noted on a separate page dated and signed by the bidder. UNLESS OTHERWISE NOTED It will be assumed that all terms and conditions and specifications will be complied with and will be considered as part of the Bid Proposal. TAX EXEMPT Federal Tax Exemption 06-6001998. Exempt from State Sales Tax under State General Statues Chapter 219-Section 12-412 Subsection A. No exemption certificates are required and none will be issued.


REFERENCES Provide reference details of most recent similar scope projects performed: REFERENCE #1:

Name of Company Phone Contact Person Cell Company Address Fax Date work completed Email

REFERENCE #2:


REFERENCE #3:


REFERENCE #4:


REFERENCE #5:



SUBCONTRACTORS Provide subcontractor details if any are to be employed as part of this contract, including labor rates: SUBCONTRACTOR #1:

Name of Company Fed ID # Contact Person Title Company Address Phone Trade Email

Rates: Supervisor $________/hr Foreman $________ /hr Journeyman $________ /hr Apprentice $________ /hr

SUBCONTRACTOR #2:



SUBCONTRACTOR #3:



SUBCONTRACTOR #4:

Name of Company Fed ID # Contact Person Title Company Address Phone Trade Email Rates: Supervisor $________/hr Foreman $________ /hr Journeyman $________ /hr Apprentice $________ /hr

NOTE: All sub-contractors are subject to approval by the Town of Fairfield and are required to provide Fed ID #.

MAINTENANCE OF CAST-IN-PLACE CONCRETE

Building Envelope Preventative Maintenance Repair Specification – Fairfield Board of Education

03013-1

SECTION 03013 - MAINTENANCE OF CAST-IN-PLACE CONCRETE

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Section 09900 “Painting”, for Concrete Water Repellant Coating.

1.2 SUMMARY

A. Section Includes:

1. Replacement of deteriorated concrete and subsequent replacement and patching. 2. Epoxy crack injection. 3. Concrete Cleaning

1.3 ACTION SUBMITTALS

A. Product Data: For each type of product. Include construction details, material descriptions, chemical composition, physical properties, test data, and mixing, preparation, and application instructions.

B. Samples for Initial Selection: Cured samples for each exposed product and for each color and texture specified.

1. Include sets of patching-material Samples in the form of briquettes, at least 3 inches long by 1-1/2 inches wide representative of the range of concrete colors on the building. Document each Sample with product, mix, and or other information necessary to replicate it.

1.4 INFORMATIONAL SUBMITTALS

A. Qualification Data: For installers.

B. Product Test Reports: For each cementitious patching mortar, joint-filler, and crack injection for tests performed by manufacturer and witnessed by a qualified testing agency.

C. Field quality-control reports.

D. Maintenance Program: Submit before work begins.



03013-2

1.5 QUALITY ASSURANCE

A. Installer Qualifications: An entity that employs installers and supervisors who are trained and approved by manufacturer to apply packaged patching-mortar materials and epoxy crack injection materials.

B. Maintenance Program: Prepare a written plan for maintenance of cast-in-place concrete, including each phase or process, protection of surrounding materials during operations, and control of debris and runoff during the Work. Describe in detail materials, methods, equipment, and sequence of operations to be used for each phase of the Work.

C. Mockups: Build mockups to demonstrate aesthetic effects and set quality standards for materials and execution. 1. Epoxy Crack Injection: Perform epoxy crack injection in two separate areas, each

approximately 48 inches long. 2. Approval of mockups does not constitute approval of deviations from the Contract

Documents contained in mockups unless Owner specifically approves such deviations in writing.

3. Subject to compliance with requirements, approved mockups may become part of the completed Work if undisturbed at time of Substantial Completion.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Comply with manufacturer's written instructions for minimum and maximum temperature requirements and other conditions for storage.

B. Store cementitious materials off the ground, under cover, and in a dry location.

C. Store aggregates covered and in a dry location; maintain grading and other required characteristics and prevent contamination.

1.7 FIELD CONDITIONS

A. Environmental Limitations for Epoxies: Do not apply when air and substrate temperatures are outside limits permitted by manufacturer. During hot weather, cool epoxy components before mixing, store mixed products in shade, and cool unused mixed products to retard setting. Do not apply to wet substrates unless approved by manufacturer.

1. Use only Class A epoxies when substrate temperatures are below or are expected to go below 40 deg F (5 deg C) within 8 hours.

2. Use only Class A or B epoxies when substrate temperatures are below or are expected to go below 60 deg F (16 deg C) within 8 hours.

3. Use only Class C epoxies when substrate temperatures are above and are expected to stay above 60 deg F (16 deg C) for 8 hours.

B. Cold-Weather Requirements for Cementitious Materials: Do not apply unless concrete-surface and air temperatures are above 40 deg F (5 deg C) and will remain so for at least 48 hours after completion of Work.



03013-3

C. Cold-Weather Requirements for Cementitious Materials: Comply with the following procedures:

1. When air temperature is below 40 deg F (5 deg C), heat patching-material ingredients and existing concrete to produce temperatures between 40 and 90 deg F (5 and 32 deg C).

2. When mean daily air temperature is between 25 and 40 deg F (minus 4 and plus 5 deg C), cover completed Work with weather-resistant insulating blankets for 48 hours after repair or provide enclosure and heat to maintain temperatures above 32 deg F (0 deg C) within the enclosure for 48 hours after repair.

3. When mean daily air temperature is below 25 deg F (minus 4 deg C), provide enclosure and heat to maintain temperatures above 32 deg F (0 deg C) within the enclosure for 48 hours after repair.

D. Hot-Weather Requirements for Cementitious Materials: Protect repair work when temperature and humidity conditions produce excessive evaporation of water from patching materials. Provide artificial shade and wind breaks, and use cooled materials as required. Do not apply to substrates with temperatures of 90 deg F (32 deg C) and above.

PART 2 - PRODUCTS

2.1 MATERIALS, GENERAL

A. Source Limitations: Obtain each color, grade, finish, type, and variety of product from single source with resources to provide products of consistent quality in appearance and physical properties.

B. VOC Content: Provide materials that comply with VOC limits of authorities having jurisdiction, CT DEP.

2.2 PATCHING MORTAR

A. Patching Mortar, General:

1. Only use patching mortars that are recommended by manufacturer for each applicable horizontal, vertical, or overhead use orientation.

2. Color and Aggregate Texture: Provide patching mortar and aggregates of colors and sizes necessary to produce patching mortar that matches existing, adjacent, exposed concrete. Blend several aggregates if necessary to achieve suitable matches.

3. Coarse Aggregate for Patching Mortar: ASTM C 33, washed aggregate, Size No. 8, Class 5S. Add to patching-mortar mix only as permitted by patching-mortar manufacturer.

B. Job-Mixed Patching Mortar: 1 part portland cement and 2-1/2 parts fine aggregate complying with ASTM C 144, except 100 percent passing a No. 16 sieve.

C. Polymer-Modified, Cementitious Patching Mortar: Packaged, dry mix for repair of concrete and that contains a non-redispersible latex additive as either a dry powder or a separate liquid that is added during mixing.



03013-4

1. Manufacturers: Subject to compliance with requirements available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

a. AQUAFIN, Inc. b. BASF Construction Chemicals - Building Systems. c. CGM, Incorporated. d. Cortec Corporation. e. Dayton Superior Corporation. f. Euclid Chemical Company (The); an RPM company. g. Fox Industries, Inc. h. Kaufman Products, Inc. i. Sika Corporation; Construction Product Division. j. Sto Corp.; Concrete Restoration Division. k. US SPEC; Division of US MIX Products Company. l. W. R. Meadows, Inc.

2. Compressive Strength: Not less than 4000 psi at when tested according to ASTM C 109/C 109M.

2.3 JOINT FILLER

A. Epoxy Joint Filler: Two-component, semirigid, 100 percent solids, epoxy resin with a Type A Shore durometer hardness of at least 80 according to ASTM D 2240.

1. Products: Subject to compliance with requirements, available products that may be incorporated into the Work include, but are not limited to, the following:

a. BASF Construction Chemicals - Building Systems; Masterfill 300i. b. ChemCo Systems; CCS Grout, Control Joint c. Dayton Superior Corporation; PoxyFil (J-52). d. Euclid Chemical Company (The), an RPM company; Euco 700. e. Kaufman Products, Inc.; Surepoxy Flexijoint. f. Metzger/McGuire; MM-80. g. Sika Corporation, Construction Product Division; Sikadur 51 NS. h. Unitex; Pro-Flex. i. US SPEC, Division of US MIX Products Company; SR 50 - EJF. j. W. R. Meadows, Inc.; Sealtight Rezi-Weld Flex.

B. Color: Matching existing joint filler.

2.4 EPOXY CRACK-INJECTION MATERIALS

A. Epoxy Crack-Injection Adhesive: ASTM C 881/C 881M, Type I free of VOCs.

1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:



03013-5

a. BASF Construction Chemicals - Building Systems. b. ChemCo Systems. c. Dayton Superior Corporation. d. Euclid Chemical Company (The); an RPM company. e. Kaufman Products, Inc. f. Sika Corporation; Construction Product Division. g. Sto Corp.; Concrete Restoration Division. h. Unitex. i. US SPEC; Division of US MIX Products Company. j. W. R. Meadows, Inc.

2. Capping Adhesive: Product manufactured for use with crack injection adhesive by same manufacturer.

3. Color: Provide epoxy crack-injection adhesive and capping adhesive that will blend with

existing, adjacent concrete and will not stain concrete surface.

2.5 CONCRETE CLEANING

A. Nonacidic Liquid Cleaner: Manufacturer's standard mildly alkaline liquid cleaner formulated for removing mold, mildew, and other organic soiling from ordinary building materials, including polished stone, brick, aluminum, plastics, and wood.


a. Diedrich Technologies Inc.; Diedrich 910PM Polished Marble Cleaner. b. Dominion Restoration Products, Inc.; Bio-Cleanse. c. Dumond Chemicals, Inc.; Safe n' Easy Ownerural Cleaner/Restorer. d. Price Research, Ltd.; Price Non-Acid Masonry Cleaner. e. PROSOCO; Enviro Klean 2010 All Surface Cleaner.

2.6 OTHER MATERIALS

A. Portland Cement: ASTM C 150, Type I, II, or III unless otherwise indicated.

2.7 MIXES

A. General: Mix products, in clean containers, according to manufacturer's written instructions.

1. Do not add water, thinners, or additives unless recommended by manufacturer. 2. When practical, use manufacturer's premeasured packages to ensure that materials are

mixed in proper proportions. When premeasured packages are not used, measure ingredients using graduated measuring containers; do not estimate quantities or use shovel or trowel as unit of measure.



03013-6

3. Do not mix more materials than can be used within time limits recommended by manufacturer. Discard materials that have begun to set.

B. Mortar Scrub Coat: Mix dry ingredients with enough water to provide consistency of thick cream.

C. Dry-Pack Mortar: Mix patching-mortar dry ingredients with just enough liquid to form damp cohesive mixture that can be squeezed by hand into a ball but is not plastic.

D. Grout for Use with Preplaced Aggregate: Proportion according to ASTM C 938. Add grout fluidifier to mixing water followed by portland cement, pozzolan, and fine aggregate.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Notify Owner seven days in advance of dates when areas of deteriorated or delaminated concrete and deteriorated reinforcing bars will be located.

B. Locate areas of deteriorated or delaminated concrete using hammer or chain-drag sounding and mark boundaries. Mark areas for removal by simplifying and squaring off boundaries as directed by Owner. At columns and walls make boundaries level and plumb unless otherwise indicated.

C. Pachometer Testing: Locate at least three reinforcing bars using a pachometer, and drill test holes to determine depth of cover. Calibrate pachometer using depth of cover measurements, and verify depth of cover in removal areas using pachometer.

D. Perform surveys as the Work progresses to detect hazards resulting from concrete-maintenance work.

3.2 PREPARATION

A. Ensure that supervisory personnel are on-site and on duty when concrete maintenance work begins and during its progress.

B. Preparation for Removal of Deteriorated Concrete: Examine construction to be repaired to determine best methods to safely and effectively perform concrete maintenance work. Examine adjacent work to determine what protective measures will be necessary. Make explorations, probes, and inquiries as necessary to determine condition of construction to be removed in the course of repair.

1. Verify that affected utilities have been disconnected and capped. 2. Inventory and record the condition of items to be removed for reinstallation or salvage. 3. Provide and maintain shoring, bracing, and temporary structural supports as required to

preserve stability and prevent unexpected or uncontrolled movement, settlement, or collapse of construction being demolished and construction and finishes to remain.



03013-7

C. Protect persons, motor vehicles, surrounding surfaces of building being restored, building site, plants, and surrounding buildings from harm resulting from concrete maintenance work.

1. Comply with each product manufacturer's written instructions for protections and precautions. Protect against adverse effects of products and procedures on people and adjacent materials, components, and vegetation.

2. Use only proven protection methods appropriate to each area and surface being protected. 3. Provide barricades, barriers, and temporary directional signage to exclude public from

areas where concrete maintenance work is being performed. 4. Erect temporary protective covers over walkways and at points of pedestrian and

vehicular entrance and exit that must remain in service during course of concrete maintenance work.

5. Contain dust and debris generated by concrete maintenance work and prevent it from reaching the public or adjacent surfaces.

6. Use water-mist sprinkling and other wet methods to control dust only with adequate, approved procedures and equipment that ensure that such water will not create a hazard or adversely affect other building areas or materials.

7. Protect floors and other surfaces along haul routes from damage, wear, and staining. 8. Provide supplemental sound-control treatment to isolate removal and dismantling work

from other areas of the building. 9. Protect adjacent surfaces and equipment by covering them with heavy polyethylene film

and waterproof masking tape or a liquid strippable masking agent. If practical, remove items, store, and reinstall after potentially damaging operations are complete.

10. Neutralize and collect alkaline and acid wastes for disposal off Owner's property. 11. Dispose of debris and runoff from operations by legal means and in a manner that

prevents soil erosion, undermining of paving and foundations, damage to landscaping, and water penetration into building interiors.

D. Existing Drains: Prior to the start of work in an area, test drainage system to ensure that it is functioning properly. Notify Owner immediately of inadequate drainage or blockage. Do not begin work in an area until the drainage system is in working order.

1. Prevent solids such as aggregate or mortar residue from entering the drainage system. Clean out drains and drain lines that become sluggish or blocked by sand or other materials resulting from concrete maintenance work.

2. Protect drains from pollutants. Block drains or filter out sediments, allowing only clean water to pass.

E. Concrete Removal:

1. Provide shoring, bracing, and supports as necessary. Strengthen or add new supports when required during progress of removal work. Do not overload structural elements with debris.

2. Saw-cut perimeter of areas indicated for removal to a depth of at least 1/2 inch. Make cuts perpendicular to concrete surfaces and no deeper than cover on reinforcement.

3. Remove deteriorated and delaminated concrete by breaking up and dislodging from reinforcement.

4. Remove additional concrete if necessary to provide a depth of removal of at least 1/2 inch over entire removal area.



03013-8

5. Where half or more of the perimeter of reinforcing bar is exposed, bond between reinforcing bar and surrounding concrete is broken, or reinforcing bar is corroded, remove concrete from entire perimeter of bar and to provide at least a 3/4-inch clearance around bar.

6. Test areas where concrete has been removed by tapping with hammer, and remove additional concrete until unsound and disbonded concrete is completely removed.

7. Provide surfaces with a fractured profile of at least 1/8 inch that are approximately perpendicular or parallel to original concrete surfaces. At columns and walls, make top and bottom surfaces level unless otherwise directed.

8. Thoroughly clean removal areas of loose concrete, dust, and debris.

F. Surface Preparation for Sealers: Acid etch surface of concrete to produce a surface profile matching CSP 1 according to ICRI 03732. Prepare surface for acid etching by detergent scrubbing to remove oils and films that may prevent acid penetration.

1. Remove excess acid solution, reaction products, and debris by squeegeeing or vacuuming.

2. Scrub surface with an alkaline detergent, rinse, and squeegee or vacuum. 3. Check acidity of surface with pH test paper and continue rinsing until pH is acceptable to

written requirements of sealer manufacturer. 4. When pH is acceptable to written requirements of sealer manufacturer and surface is

clean, vacuum dry.

G. Surface Preparation for Sealers: Clean concrete to remove dirt, oils, films, and other materials detrimental to sealer application.

1. Use low-pressure water cleaning or detergent scrubbing.

3.3 APPLICATION

A. General: Comply with manufacturer's written instructions and recommendations for application of products, including surface preparation.

B. Latex Bonding Agent, Type I: Apply to concrete by brush roller or spray. Allow to dry before placing patching mortar or concrete.

C. Latex Bonding Agent, Type II: Mix with portland cement and scrub into concrete surface according to manufacturer's written instructions. Place patching mortar or concrete while bonding agent is still wet. If bonding agent dries, recoat before placing patching mortar or concrete.

D. Mortar Scrub Coat for Job-Mixed Patching Mortar and Concrete: Dampen repair area and surrounding concrete 6 inches beyond repair area. Remove standing water and apply scrub coat with a brush, scrubbing it into surface and thoroughly coating repair area. If scrub coat dries, recoat before placing patching mortar or concrete.

E. Slurry Coat for Cementitious Patching Mortar: Wet substrate thoroughly and then remove standing water. Scrub a slurry of neat patching mortar mixed with latex bonding agent into substrate, filling pores and voids.



03013-9

F. Placing Patching Mortar: Place as follows unless otherwise recommended in writing by manufacturer:

1. Provide forms where necessary to confine patch to required shape. 2. Wet substrate and forms thoroughly and then remove standing water. 3. Pretreatment: Apply specified bonding agent and slurry coat. 4. General Placement: Place patching mortar by troweling toward edges of patch to force

intimate contact with edge surfaces. For large patches, fill edges first and then work toward center, always troweling toward edges of patch. At fully exposed reinforcing bars, force patching mortar to fill space behind bars by compacting with trowel from sides of bars.

5. Vertical Patching: Place material in lifts of not more than 1 inch nor less than 1/8 inch. Do not feather edge.

6. Overhead Patching: Place material in lifts of not more than 1 inch nor less than 1/8 inch. Do not feather edge.

7. Consolidation: After each lift is placed, consolidate material and screed surface. 8. Multiple Lifts: Where multiple lifts are used, score surface of lifts to provide a rough

surface for placing subsequent lifts. Allow each lift to reach final set before placing subsequent lifts.

9. Finishing: Allow surfaces of lifts that are to remain exposed to become firm and then finish to a surface matching adjacent concrete.

10. Curing: Wet-cure cementitious patching materials, including polymer-modified cementitious patching materials, for not less than seven days by water-fog spray or water-saturated absorptive cover.

G. Dry-Pack Mortar: Use for deep cavities and where indicated. Place as follows unless otherwise recommended in writing by manufacturer:

1. Provide forms where necessary to confine patch to required shape. 2. Wet substrate and forms thoroughly and then remove standing water. 3. Pretreatment: Apply specified bonding agent and slurry coat. 4. Place dry-pack mortar into cavity by hand, and compact tightly into place. Do not place

more material at a time than can be properly compacted. Continue placing and compacting until patch is approximately level with surrounding surface.

5. After cavity is filled and patch is compacted, trowel surface to match profile and finish of surrounding concrete. A thin coat of patching mortar may be troweled into the surface of patch to help obtain required finish.

6. Wet-cure patch for not less than seven days by water-fog spray or water-saturated absorptive cover.

H. Epoxy Crack Injection:

1. Clean areas to receive capping adhesive of oil, dirt, and other substances that would interfere with bond, and clean cracks with oil-free compressed air or low-pressure water to remove loose particles.

2. Place injection ports as recommended by epoxy manufacturer, spacing no farther apart than thickness of member being injected. Seal injection ports in place with capping adhesive.

3. Seal cracks at exposed surfaces with a ribbon of capping adhesive at least 1/4 inch thick by 1 inch wider than crack.

4. Inject cracks wider than 0.003 inch to a depth of 8 inches.



03013-10

5. Inject epoxy adhesive, beginning at widest part of crack and working toward narrower parts. Inject adhesive into ports to refusal, capping adjacent ports when they extrude epoxy. Cap injected ports and inject through adjacent ports until crack is filled.

6. After epoxy adhesive has set, remove injection ports and grind surfaces smooth.

3.4 FIELD QUALITY CONTROL

A. Testing Agency: Owner will engage a qualified testing agency to perform tests and inspections.

B. Perform the following tests and inspections:

1. Packaged, Cementitious Patching Mortar: one randomly selected sets of samples for each type of mortar required, tested according to ASTM C 928.

2. Job-Mixed Patching Mortar: one randomly selected sets of samples for each type of mortar required, tested for compressive strength according to ASTM C 109/C 109M.

3. Joint Filler: Core-drilled samples to verify proper installation.

a. Testing Frequency: One sample for each 100 feet of joint filled. b. Where samples are taken, refill holes with joint filler.

4. Epoxy Crack Injection: Core-drilled samples to verify proper installation.

a. Testing Frequency: 3 samples from mockup and 1 sample for each 100 feet of crack injected.

b. Where samples are taken, refill holes with epoxy mortar.

C. Product will be considered defective if it does not pass tests and inspections.

D. Prepare test and inspection reports.

END OF SECTION 03013

MAINTENANCE OF UNIT MASONRY


04900 - 1

SECTION 04900 - MAINTENANCE OF UNIT MASONRY

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section includes maintenance of unit masonry consisting of brick clay masonry restoration and cleaning as follows:

1. Unused anchor removal. 2. Repairing unit masonry, including replacing units. 3. Painting steel uncovered during the work. 4. Reanchoring veneers. 5. Repointing joints. 6. Preliminary cleaning, including removing plant growth. 7. Cleaning exposed unit masonry surfaces.

B. Owner-Furnished Material: Salvaged brick.

C. Related Sections:

1. Division 01 Section “Allowances”. 2. Division 07 Section "Sheet Metal Flashing and Trim" and “Sealants”.

1.3 ALLOWANCES

A. Allowances for clay masonry restoration and cleaning are specified in Division 01 Section "Allowances."

1. Perform clay masonry restoration and cleaning work under quantity allowances and only as authorized. Authorized work includes work authorized in writing by Owner.

2. Notify Owner weekly of extent of work performed that is attributable to quantity allowances.

3. Perform work that exceeds quantity allowances only as authorized by Change Orders.

B. Provide preconstruction testing as part of testing and inspecting allowance.



04900 - 2

C. Remove unused anchors as part of anchor allowance.

D. Remove and replace brick as part of brick removal and replacement allowance.

E. Reanchor veneers as part of reanchoring veneers allowance.

F. Patch masonry units as part of masonry unit patching allowance.

G. Clean brickwork, including preliminary and final cleaning, as part of masonry cleaning allowance.

H. Repoint masonry as part of repointing masonry allowance.

1.4 UNIT PRICES

A. Work of this Section is affected by unit prices specified in Division 01 Section "Unit Prices."

1. Unit prices apply to authorized work covered by estimated quantities. 2. Unit prices apply to additions to and deletions from Work as authorized by

Change Orders.

1.5 DEFINITIONS

A. Very Low-Pressure Spray: Under 100 psi .

B. Low-Pressure Spray: 100 to 400 psi; 4 to 6 gpm.

C. Medium-Pressure Spray: 400 to 800 psi 4 to 6 gpm

D. High-Pressure Spray: 800 to 1200 psi; 4 to 6 gpm

E. Saturation Coefficient: Ratio of the weight of water absorbed during immersion in cold water to weight absorbed during immersion in boiling water; used as an indication of resistance of masonry units to freezing and thawing.

1.6 PRECONSTRUCTION TESTING

A. Preconstruction Testing Service: Owner may engage a qualified testing agency to perform preconstruction testing on masonry units as follows.

1. Provide test specimens as indicated and representative of proposed materials and construction.



04900 - 3

2. Existing Brick: Test each type of existing masonry unit indicated for replacement, according to testing methods in ASTM C 67 for compressive strength, 24-hour cold-water absorption, 5-hour boil absorption, saturation coefficient, and initial rate of absorption (suction). Carefully remove five existing units from locations designated by Owner. Take testing samples from these units.

3. Existing Mortar: Test according to ASTM C 295, modified as agreed by testing service and Owner for Project requirements, to determine proportional composition of original ingredients, sizes and colors of aggregates, and approximate strength. Use X-ray diffraction, infrared spectroscopy, and differential thermal analysis as necessary to supplement microscopical methods. Carefully remove existing mortar from within joints at five locations designated by Owner.

4. Temporary Patch: As directed by Owner, provide temporary materials at locations from which existing samples were taken.

5. Replacement Brick: Test each proposed type of replacement masonry unit, according to sampling and testing methods in ASTM C 67 for compressive strength, 24-hour cold-water absorption, 5-hour boil absorption, saturation coefficient, and initial rate of absorption (suction).

1.7 ACTION SUBMITTALS

A. Product Data: For each type of product indicated. Include recommendations for application and use. Include test data substantiating that products comply with requirements.

B. Shop Drawings: For the following:

1. Full-size patterns with complete dimensions for new specially molded brick shapes and brick arches and their jointing, showing relation of existing to new units.

2. Provisions for expansion joints or other sealant joints. 3. Provisions for flashing, lighting fixtures, conduits, and weep holes as required. 4. Replacement and repair anchors. Include details of anchors within individual

masonry units, with locations of anchors and dimensions of holes and recesses in units required for anchors.

C. Samples for Initial Selection: For the following:

1. Pointing Mortar: Submit sets of mortar for pointing in the form of sample mortar strips, 6 inches long by 1/2 inch wide, set in aluminum or plastic channels.

a. Have each set contain a close color range of at least three Samples of different mixes of colored sands and cements that produce a mortar matching the cleaned masonry when cured and dry.

b. Submit with precise measurements on ingredients, proportions, gradations, and sources of colored sands from which each Sample was made.



04900 - 4

2. Patching Compound: Submit sets of patching compound Samples in the form of plugs (patches in drilled holes) in sample units of masonry representative of the range of masonry colors on the building.

a. Have each set contain a close color range of at least three Samples of different mixes of patching compound that matches the variations in existing masonry when cured and dry.

3. Sealant Materials: See Division 07 Section "Joint Sealants." 4. Include similar Samples of accessories involving color selection.

D. Samples for Verification: For the following:

1. Each type of masonry unit to be used for replacing existing units. Include sets of Samples as necessary to show the full range of shape, color, and texture to be expected.

a. For each brick type, provide straps or panels containing at least four bricks. Include multiple straps for brick with a wide range.

2. Each type of sand used for pointing mortar; minimum 1 lb of each in plastic screw-top jars.

a. For blended sands, provide Samples of each component and blend. b. Identify sources, both supplier and quarry, of each type of sand.

3. Each type, color, and texture of pointing mortar in the form of sample mortar strips, 6 inches long by 1/2 inch wide, set in aluminum or plastic channels.

a. Include with each Sample a list of ingredients with proportions of each. Identify sources, both supplier and quarry, of each type of sand and brand names of cementitious materials and pigments if any.

4. Each type of masonry patching compound in the form of briquettes, at least 3 inches long by 1-1/2 inches wide. Document each Sample with manufacturer and stock number or other information necessary to order additional material.

5. Sealant Materials: See Division 07 Section "Joint Sealants." 6. Accessories: Each type of anchor, accessory, and miscellaneous support.

1.8 INFORMATIONAL SUBMITTALS

A. Qualification Data: For restoration specialists, chemical-cleaner manufacturer and testing service.

B. Preconstruction Test Reports: For existing and replacement masonry units.

C. Quality-Control Program.



04900 - 5

D. Restoration Program.

E. Cleaning Program

F. Conformance Statement that all products conform to the Connecticut State DEP’s V.O.C. requirements.

1.9 QUALITY ASSURANCE

A. Restoration Specialist Qualifications: Engage an experienced, preapproved masonry restoration and cleaning firm to perform work of this Section. Firm shall have completed work similar in material, design, and extent to that indicated for this Project with a record of successful in-service performance. Experience installing standard unit masonry is not sufficient experience for masonry restoration work.

1. At Contractor's option, work may be divided between two specialist firms: one for cleaning work and one for repair work.

2. Field Supervision: Restoration specialist firms shall maintain experienced full-time supervisors on Project site during times that clay masonry restoration and cleaning work is in progress. Supervisors shall not be changed during Project except for causes beyond the control of restoration specialist firm.

3. Restoration Worker Qualifications: Persons who are experienced and specialize in restoration work of types they will be performing. When masonry units are being patched, assign at least one worker among those performing patching work who is trained and certified by manufacturer of patching compound to apply its products.

B. Chemical-Cleaner Manufacturer Qualifications: A firm regularly engaged in producing masonry cleaners that have been used for similar applications with successful results, and with factory-trained representatives who are available for consultation and Project-site inspection and assistance at no additional cost.

C. Source Limitations: Obtain each type of material for masonry restoration (face brick, cement, sand, etc.) from one source with resources to provide materials of consistent quality in appearance and physical properties.

D. Quality-Control Program: Prepare a written quality-control program for this Project to systematically demonstrate the ability of personnel to properly follow methods and use materials and tools without damaging masonry. Include provisions for supervising performance and preventing damage due to worker fatigue.

E. Restoration Program: Prepare a written, detailed description of materials, methods, equipment, and sequence of operations to be used for each phase of restoration work including protection of surrounding materials and Project site.

1. Include methods for keeping pointing mortar damp during curing period.



04900 - 6

2. If materials and methods other than those indicated are proposed for any phase of restoration work, add to the Quality-Control Program a written description of such materials and methods, including evidence of successful use on comparable projects, and demonstrations to show their effectiveness for this Project and worker's ability to use such materials and methods properly.

F. Cleaning Program: Prepare a written cleaning program that describes cleaning process in detail, including materials, methods, and equipment to be used, protection of surrounding materials, and control of runoff during operations.

1. If materials and methods other than those indicated are proposed for any phase of restoration work, add to the Quality-Control Program a written description of such materials and methods, including evidence of successful use on comparable projects, and demonstrations to show their effectiveness for this Project and worker's ability to use such materials and methods properly.

G. Cleaning and Repair Appearance Standard: Cleaned and repaired surfaces are to have a uniform appearance as viewed from 20 feet away by Owner. Perform additional paint and stain removal, general cleaning, and spot cleaning of small areas that are noticeably different, so that surface blends smoothly into surrounding areas.

H. Mockups: Prepare mockups of restoration and cleaning to demonstrate aesthetic effects and set quality standards for materials and execution and for fabrication and installation.

1. Masonry Repair: Prepare sample areas for each type of masonry material indicated to have repair work performed. If not otherwise indicated, size each mockup not smaller than 2 adjacent whole units or approximately 48 inches in least dimension. Erect sample areas in existing walls unless otherwise indicated, to demonstrate quality of materials, workmanship, and blending with existing work. Include the following as a minimum:

a. Replacement:

1) Four brick units replaced.

b. Reanchoring Veneers: Install three masonry repair anchors in mockup wall assembly of each anchor type required.

c. Patching: Three small holes at least 1 inch for each type of masonry material indicated to be patched, so as to leave no evidence of repair.

d. Widening Joints: Widen a joint in 2 separate locations, each approximately 12 inches.

2. Repointing: Rake out joints in 2 separate areas , each approximately 36 inches high by 48 inches wide for each type of repointing required and repoint one of the areas.

3. Cleaning: Clean an area approximately 25 sq. ft. for each type of masonry and surface condition.



04900 - 7

a. Test cleaners and methods on samples of adjacent materials for possible adverse reactions. Do not use cleaners and methods known to have deleterious effect.

b. Allow a waiting period of not less than seven days after completion of sample cleaning to permit a study of sample panels for negative reactions.

4. Approval of mockups does not constitute approval of deviations from the Contract Documents contained in mockups unless Owner specifically approves such deviations in writing.

5. Approved mockups may become part of the completed Work if undisturbed at time of Substantial Completion.

I. Preinstallation Conference: Conduct conference at Project site.

1. Review methods and procedures related to masonry restoration and cleaning including, but not limited to, the following:

a. Construction schedule. Verify availability of materials, Restoration Specialist's personnel, equipment, and facilities needed to make progress and avoid delays.

b. Materials, material application, sequencing, tolerances, and required clearances.

1.10 DELIVERY, STORAGE, AND HANDLING

A. Deliver masonry units to Project site strapped together in suitable packs or pallets or in heavy-duty cartons.

B. Deliver other materials to Project site in manufacturer's original and unopened containers, labeled with manufacturer's name and type of products.

C. Store cementitious materials on elevated platforms, under cover, and in a dry location. Do not use cementitious materials that have become damp.

D. Store hydrated lime in manufacturer's original and unopened containers. Discard lime if containers have been damaged or have been opened for more than two days.

E. Store lime putty covered with water in sealed containers.

F. Store sand where grading and other required characteristics can be maintained and contamination avoided.



04900 - 8

1.11 PROJECT CONDITIONS

A. Weather Limitations: Proceed with installation only when existing and forecasted weather conditions permit masonry restoration and cleaning work to be performed according to manufacturers' written instructions and specified requirements.

B. Repair masonry units and repoint mortar joints only when air temperature is between 40 and 90 deg F (4 and 32 deg C) and is predicted to remain so for at least 7 days after completion of the Work unless otherwise indicated.

C. Cold-Weather Requirements: Comply with the following procedures for masonry repair and mortar-joint pointing unless otherwise indicated:

1. When air temperature is below 40 deg F (4 deg C), heat mortar ingredients, masonry repair materials, and existing masonry walls to produce temperatures between 40 and 120 deg F (4 and 49 deg C).

2. When mean daily air temperature is below 40 deg F (4 deg C), provide enclosure and heat to maintain temperatures above 32 deg F (0 deg C) within the enclosure for 7 days after repair and pointing.

D. Hot-Weather Requirements: Protect masonry repair and mortar-joint pointing when temperature and humidity conditions produce excessive evaporation of water from mortar and repair materials. Provide artificial shade and wind breaks and use cooled materials as required to minimize evaporation. Do not apply mortar to substrates with temperatures of 90 deg F (32 deg C) and above unless otherwise indicated.

E. For manufactured repair materials, perform work within the environmental limits set by each manufacturer.

F. Clean masonry surfaces only when air temperature is 40 deg F (4 deg C) and above and is predicted to remain so for at least 7 days after completion of cleaning.

1.12 COORDINATION

A. Coordinate masonry restoration and cleaning with public circulation patterns at Project site. Some work is near public circulation patterns. Public circulation patterns cannot be closed off entirely, and in places can be only temporarily redirected around small areas of work. Plan and execute the Work accordingly.

1.13 SEQUENCING AND SCHEDULING

A. Order replacement materials at earliest possible date to avoid delaying completion of the Work.

B. Order sand for pointing mortar immediately after approval of mockups. Take delivery of and store at Project site a sufficient quantity to complete Project.



04900 - 9

C. Perform masonry restoration work in the following sequence:

1. Remove plant growth. 2. Inspect for open mortar joints and repair before cleaning to prevent the intrusion

of water and other cleaning materials into the wall. 3. Remove paint. 4. Clean masonry surfaces. 5. Where water repellents, specified in Division 07, are to be used on or near

masonry work, delay application of these chemicals until after pointing. 6. Rake out mortar from joints surrounding masonry to be replaced and from joints

adjacent to masonry repairs along joints. 7. Repair masonry, including replacing existing masonry with new masonry

materials. 8. Rake out mortar from joints to be repointed. 9. Point mortar, and sealant joints. 10. After repairs and repointing have been completed and cured, perform a final

cleaning to remove residues from this work. 11. Inspect for open mortar joints and repair before cleaning to prevent the intrusion

of water and other cleaning materials into the wall. 12. Remove paint. 13. Clean masonry surfaces.

D. As scaffolding is removed, patch anchor holes used to attach scaffolding. Patch holes in masonry units to comply with "Masonry Unit Patching" Article. Patch holes in mortar joints to comply with "Repointing Masonry" Article.

PART 2 - PRODUCTS

2.1 MASONRY MATERIALS

A. Face Brick: Provide face brick, including specially molded, ground, cut, or sawed shapes where required to complete masonry restoration work.

1. Provide units with colors, color variation within units, surface texture, size, and shape to match existing brickwork and with physical properties within 10 percent of those determined from preconstruction testing of selected existing units.

a. For existing brickwork that exhibits a range of colors or color variation within units, provide brick that proportionally matches that range and variation rather than brick that matches an individual color within that range.



04900 - 10

2. Special Shapes:

a. Provide specially molded, 100 percent solid shapes for applications where core holes or "frogs" could be exposed to view or weather when in final position and where shapes produced by sawing would result in sawed surfaces being exposed to view.

b. Provide specially ground units, shaped to match patterns, for arches and where indicated.

c. Mechanical chopping or breaking brick, or bonding pieces of brick together by adhesive, are not acceptable procedures for fabricating special shapes.

3. Tolerances as Fabricated: Comply with tolerance requirements in ASTM C 216, Type FBX

B. Building Brick: Provide building brick complying with ASTM C 62, of same vertical dimension as face brick, for masonry work concealed from view.

1. Grade SW where in contact with earth. 2. Grade SW, MW, or NW for concealed backup. 3. Date Identification: Emboss in the clay body on an interior surface of each unit in

easily read 1/2-inch- (13-mm-) high characters, "MADE 20--." Manufacturer's name may also be embossed.

C. Salvaged Brick: Obtain salvaged brick from Owner from location shown on Drawings. Clean off residual mortar.

2.2 MORTAR MATERIALS

A. Portland Cement: ASTM C 150, Type I or Type II, white or gray where required for color matching of exposed mortar.

1. Provide cement containing not more than 0.60 percent total alkali when tested according to ASTM C 114.

B. Hydrated Lime: ASTM C 207, Type S.

C. Factory-Prepared Lime Putty: ASTM C 1489.

D. Quicklime: ASTM C 5, pulverized lime.

E. Mortar Sand: ASTM C 144 unless otherwise indicated.

1. Color: Provide natural sand or ground marble, granite, or other sound stone of color necessary to produce required mortar color.

2. For pointing mortar, provide sand with rounded edges. 3. Match size, texture, and gradation of existing mortar sand as closely as possible.

Blend several sands if necessary to achieve suitable match.



04900 - 11

F. Mortar Pigments: Natural and synthetic iron oxides, compounded for mortar mixes. Use only pigments with a record of satisfactory performance in masonry mortars.

G. Water: Potable.

2.3 MANUFACTURED REPAIR MATERIALS

A. Masonry Patching Compound: Factory-mixed cementitious product that is custom manufactured for patching masonry.


a. Cathedral Stone Products, Inc.; Jahn M100 Terra Cotta and Brick Repair Mortar.

b. Conproco Corporation; Matrix. c. Edison Coatings, Inc.; Custom System 45.

2. Use formulation that is vapor- and water permeable (equal to or more than the masonry unit), exhibits low shrinkage, has lower modulus of elasticity than the masonry units being repaired, and develops high bond strength to all types of masonry.

3. Use formulation having working qualities and retardation control to permit forming and sculpturing where necessary.

4. Formulate patching compound used for patching brick in colors and textures to match each masonry unit being patched. Provide not less than three colors to enable matching the color, texture, and variation of each unit.

2.4 PAINT REMOVERS

A. Alkaline Paste Paint Remover: Manufacturer's standard alkaline paste formulation for removing paint coatings from masonry.


a. ABR Products, Inc.; 800 Brush Grade. b. Diedrich Technologies Inc.; 606 Multi-Layer Paint Remover or 606X Extra

Thick Multi-Layer Paint Remover. c. Hydroclean, Hydrochemical Techniques, Inc.; Hydroclean HT-716 Heavy

Duty Paint Remover. d. Price Research, Ltd.; Price Heavy Duty Paint Stripper. e. PROSOCO; Enviro Klean Safety Peel 2; Sure Klean Heavy-Duty Paint

Stripper or Sure Klean Heavy-Duty Paint Stripper D.



04900 - 12

B. Covered or Skin-Forming Alkaline Paint Remover: Manufacturer's standard covered or skin-forming alkaline formulation for removing paint coatings from masonry.


a. ABR Products, Inc.; Grip 'N Strip 800 Fast Acting. b. Diedrich Technologies Inc.; 606 Multi-Layer Paint Remover or 606X Extra

Thick Multi-Layer Paint Remover with pull-off removal system. c. Dumond Chemicals, Inc.; Peel Away 1 System. d. PROSOCO; Enviro Klean Safety Peel 1 or Enviro Klean Safety Peel 3 with

Enviro Klean Overcoat.

C. Solvent-Type Paint Remover: Manufacturer's standard water-rinsable, solvent-type gel formulation for removing paint coatings from masonry.


a. ABR Products, Inc.; Super Bio Strip Gel. b. Diedrich Technologies Inc.; 505 Special Coatings Stripper. c. Dumond Chemicals, Inc.; Peel Away 2. d. Hydroclean, Hydrochemical Techniques, Inc.; Hydroclean HT-300 Solvent

Paint Remover. e. Price Research, Ltd.; Price Strip-All. f. PROSOCO; Sure Klean Fast Acting Stripper.

D. Low-Odor, Solvent-Type Paint Remover: Manufacturer's standard low-odor, water-rinsable solvent-type gel formulation, containing no methanol or methylene chloride, for removing paint coatings from masonry.


a. ABR Products, Inc.; Super Bio Strip Gel. b. Cathedral Stone Products, Inc.; S-301, S-303 or S-305. c. Dumond Chemicals, Inc.; Peel Away 6, Peel Away 7 or Peel Away 21. d. PROSOCO; Enviro Klean Safety Peel 1or Enviro Klean Safety Peel 3.

2.5 CLEANING MATERIALS

A. Water: Potable.

B. Hot Water: Water heated to a temperature of 140 to 160 deg F (60 to 71 deg C).



04900 - 13

C. Job-Mixed Detergent Solution: Solution prepared by mixing 2 cups (0.5 L) of tetrasodium polyphosphate, 1/2 cup (125 mL) of laundry detergent, and 20 quarts (20 L) of hot water for every 5 gal. (20 L) of solution required.

D. Job-Mixed Mold, Mildew, and Algae Remover: Solution prepared by mixing 2 cups (0.5 L) of tetrasodium polyphosphate, 5 quarts (5 L) of 5 percent sodium hypochlorite (bleach), and 15 quarts (15 L) of hot water for every 5 gal. (20 L) of solution required.

E. Nonacidic Gel Cleaner: Manufacturer's standard gel formulation, with pH between 6 and 9, that contains detergents with chelating agents and is specifically formulated for cleaning masonry surfaces.


a. Price Research, Ltd.; Price Marble Cleaner-Gel. b. PROSOCO; Sure Klean 942 Limestone and Marble Cleaner.

F. Nonacidic Liquid Cleaner: Manufacturer's standard mildly alkaline liquid cleaner formulated for removing mold, mildew, and other organic soiling from ordinary building materials, including polished stone, brick, aluminum, plastics, and wood.


a. Diedrich Technologies Inc.; Diedrich 910PM Polished Marble Cleaner. b. Dominion Restoration Products, Inc.; Bio-Cleanse. c. Dumond Chemicals, Inc.; Safe n' Easy Ownerural Cleaner/Restorer. d. Price Research, Ltd.; Price Non-Acid Masonry Cleaner. e. PROSOCO; Enviro Klean 2010 All Surface Cleaner.

G. Mild Acidic Cleaner: Manufacturer's standard mildly acidic cleaner containing no muriatic (hydrochloric), hydrofluoric, or sulfuric acid; or ammonium bifluoride or chlorine bleaches.


a. ABR Products, Inc.; X-190 Limestone & Concrete Cleaner. b. Diedrich Technologies Inc.; Envirorestore 100. c. Dominion Restoration Products, Inc.; DR-60 Stone and Masonry Cleaner. d. PROSOCO; Enviro Klean BioWash.

H. Acidic Cleaner: Manufacturer's standard acidic masonry cleaner composed of hydrofluoric acid or ammonium bifluoride blended with other acids, detergents, wetting agents, and inhibitors.



04900 - 14


a. ABR Products, Inc.; 801 Heavy Duty Masonry Cleaner. b. Diedrich Technologies Inc.; Diedrich 101 Masonry Restorer or Diedrich

101G Granite, and Brick Cleaner. c. Dumond Chemicals, Inc.; Safe n' Easy Ultimate Stone and Masonry Cleaner

or Safe n' Easy Heavy Duty Restoration Cleaner. d. EaCo Chem, Inc.; GS-Restoration or HD-Acid e. Hydroclean, Hydrochemical Techniques, Inc.; Hydroclean Brick, Granite,

Sandstone and Terra Cotta Cleaner (HT-626). f. Price Research, Ltd.; Price Heavy Duty Restoration Cleaner or Price

Restoration Cleaner. g. PROSOCO; Enviro Klean Restoration Cleaner, Sure Klean Restoration

Cleaner or Sure Klean Heavy-Duty Restoration Cleaner.

I. Two-Part Chemical Cleaner: Manufacturer's standard system consisting of potassium or sodium hydroxide based, alkaline prewash cleaner and acidic afterwash cleaner that does not contain hydrofluoric acid.


a. ABR Products, Inc.; 500 Limestone Prewash Cleaner followed by 500 Limestone Afterwash.

b. Diedrich Technologies Inc.; Diedrich 808 Limestone Pre-Wash or Diedrich 808X Black Encrustation Remover - Super Strong followed by 707N Limestone Neutralizer After-Rinse.

c. PROSOCO; Enviro Klean BioKlean followed by Sure Klean Limestone & Masonry Afterwash or Sure Klean 766 Limestone Prewash followed by SureKlean Limestone & Masonry Afterwash.

2.6 ACCESSORY MATERIALS

A. Liquid Strippable Masking Agent: Manufacturer's standard liquid, film-forming, strippable masking material for protecting glass, metal, and polished stone surfaces from damaging effects of acidic and alkaline masonry cleaners.


a. ABR Products, Inc.; Rubber Mask. b. Price Research, Ltd.; Price Mask. c. PROSOCO; Sure Klean Strippable Masking.



04900 - 15

B. Masonry Repair Anchors, Expansion Type: Mechanical fasteners designed for masonry veneer stabilization consisting of 1/4-inch- (6-mm-) diameter, Type 316 stainless-steel rod with brass expanding shells at each end and water-shedding washer in the middle. Expanding shells shall be designed to provide positive mechanical anchorage to veneer on one end and backup masonry on the other.


a. BLOK-LOK Limited; Torq-Lok. b. Dur-O-Wal, a division of Dayton Superior; Dur-O-Wal Repair Anchor. c. Hohmann & Barnard, Inc.; #521RA-B Restoration Anchor.

C. Masonry Repair Anchors, Spiral Type: Type 316 stainless-steel spiral rods designed to anchor to backing and veneer. Anchors are flexible in plane of veneer but rigid perpendicular to it.

1. Provide adhesive-installed anchors complete with manufacturer's standard epoxy adhesive and injection tubes, or other devices required for installation.

2. Provide driven-in anchors designed to be installed in drilled holes and relying on screw effect rather than adhesive to secure them to backup and veneer.


a. BLOK-LOK Limited; Spira-Lok. b. Dur-O-Wal, a division of Dayton Superior; Dur-O-Pair Resin Anchor. c. Heckmann Building Products Inc.; #391 Remedial Tie. d. Hohmann & Barnard, Inc.; Helix Spiro-Ties.

D. Masonry Repair Anchors, Rod/Screen Tube Type: Stainless-steel screen tube with or without Type 316 stainless-steel rod, adhesive installed by injection with manufacturer's standard epoxy adhesive, complete with other devices required for installation.


a. BLOK-LOK Limited; Chem-Lok. b. Hohmann & Barnard, Inc.; #520RA.

E. Sealant Materials:

1. Provide manufacturer's standard chemically curing, elastomeric sealant(s) of base polymer and characteristics indicated below that comply with applicable requirements in Division 07 Section "Joint Sealants."

a. Single-component, nonsag urethane sealant.



04900 - 16

2. Colors: Provide colors of exposed sealants to match colors of masonry adjoining installed sealant unless otherwise indicated.

3. Ground-Mortar Aggregate: Custom crushed and ground pointing mortar sand or existing mortar retrieved from joints. Grind to a particle size that matches the adjacent mortar aggregate and color. Remove all fines passing the 100 sieve.

F. Joint-Sealant Backing:

1. Cylindrical Sealant Backings: ASTM C 1330, Type C (closed-cell material with a surface skin) and of size and density to control sealant depth and otherwise contribute to producing optimum sealant performance.

2. Bond-Breaker Tape: Polyethylene tape or other plastic tape recommended by sealant manufacturer for preventing sealant from adhering to rigid, inflexible joint-filler materials or joint surfaces at back of joint where such adhesion would result in sealant failure. Provide self-adhesive tape where acceptable.

G. Setting Buttons: Resilient plastic buttons, nonstaining to masonry, sized to suit joint thicknesses and bed depths of masonry units without intruding into required depths of pointing materials.

H. Masking Tape: Nonstaining, nonabsorbent material, compatible with pointing mortar, joint primers, sealants, and surfaces adjacent to joints; that will easily come off entirely, including adhesive.

I. Antirust Coating: Fast-curing, lead- and chromate-free, self-curing, universal modified-alkyd primer complying with SSPC-Paint 20 or SSPC-Paint 29 zinc-rich coating.

1. Use coating requiring no better than SSPC-SP 2, "Hand Tool Cleaning surface preparation according to manufacturer's literature or certified statement.

2. Use coating with a VOC content of 50 or less when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

J. Miscellaneous Products: Select materials and methods of use based on the following, subject to approval of a mockup:

1. Previous effectiveness in performing the work involved. 2. Little possibility of damaging exposed surfaces. 3. Consistency of each application. 4. Uniformity of the resulting overall appearance. 5. Do not use products or tools that could do the following:

a. Remove, alter, or in any way harm the present condition or future preservation of existing surfaces, including surrounding surfaces not in contract.

b. Leave a residue on surfaces.



04900 - 17

2.7 MORTAR MIXES

A. Preparing Lime Putty: Slake quicklime and prepare lime putty according to appendix to ASTM C 5 and manufacturer's written instructions.

B. Measurement and Mixing: Measure cementitious materials and sand in a dry condition by volume or equivalent weight. Do not measure by shovel; use known measure. Mix materials in a clean, mechanical batch mixer.

1. Mixing Pointing Mortar: Thoroughly mix cementitious materials and sand together before adding any water. Then mix again adding only enough water to produce a damp, unworkable mix that will retain its form when pressed into a ball. Maintain mortar in this dampened condition for 15 to 30 minutes. Add remaining water in small portions until mortar reaches desired consistency. Use mortar within one hour of final mixing; do not retemper or use partially hardened material.

C. Colored Mortar: Produce mortar of color required by using specified ingredients. Do not alter specified proportions without Owner's approval.

1. Mortar Pigments: Where mortar pigments are indicated, do not exceed a pigment-to-cement ratio of 1:10 by weight.

D. Do not use admixtures in mortar unless otherwise indicated.

E. Mortar Proportions: Mix mortar materials in the following proportions:

1. Pointing Mortar for Brick: 1 part portland cement, 2 parts lime, and 6 parts sand

a. Add mortar pigments to produce mortar colors required. 2. Rebuilding (Setting) Mortar: Comply with ASTM C 270, Proportion

Specification, Type N unless otherwise indicated; with cementitious material limited to portland cement and lime.

2.8 CHEMICAL CLEANING SOLUTIONS

A. Dilute chemical cleaners with water to produce solutions not exceeding concentration recommended by chemical-cleaner manufacturer.

B. Acidic Cleaner Solution for Brick: Dilute with water to produce hydrofluoric acid content of 3 percent or less, but not greater than that recommended by chemical-cleaner manufacturer.



04900 - 18

PART 3 - EXECUTION

3.1 PROTECTION

A. Protect persons, motor vehicles, surrounding surfaces of building being restored, building site, plants, and surrounding buildings from harm resulting from masonry restoration work.

1. Erect temporary protective covers over walkways and at points of pedestrian and vehicular entrance and exit that must remain in service during course of restoration and cleaning work.

B. Comply with chemical-cleaner manufacturer's written instructions for protecting building and other surfaces against damage from exposure to its products. Prevent chemical-cleaning solutions from coming into contact with people, motor vehicles, landscaping, buildings, and other surfaces that could be harmed by such contact.

1. Cover adjacent surfaces with materials that are proven to resist chemical cleaners used unless chemical cleaners being used will not damage adjacent surfaces. Use materials that contain only waterproof, UV-resistant adhesives. Apply masking agents to comply with manufacturer's written instructions. Do not apply liquid masking agent to painted or porous surfaces. When no longer needed, promptly remove masking to prevent adhesive staining.

2. Keep wall wet below area being cleaned to prevent streaking from runoff. 3. Do not clean masonry during winds of sufficient force to spread cleaning

solutions to unprotected surfaces. 4. Neutralize and collect alkaline and acid wastes for disposal off Owner's property. 5. Dispose of runoff from cleaning operations by legal means and in a manner that

prevents soil erosion, undermining of paving and foundations, damage to landscaping, and water penetration into building interiors.

C. Prevent mortar from staining face of surrounding masonry and other surfaces.

1. Cover sills, ledges, and projections to protect from mortar droppings. 2. Keep wall area wet below rebuilding and pointing work to discourage mortar

from adhering. 3. Immediately remove mortar in contact with exposed masonry and other surfaces. 4. Clean mortar splatters from scaffolding at end of each day.

D. Remove gutters and downspouts adjacent to masonry and store where indicated by owner during masonry restoration and cleaning. Reinstall when masonry restoration and cleaning are complete.

1. Provide temporary rain drainage during work as indicated by owner to direct water away from building.



04900 - 19

3.2 UNUSED ANCHOR REMOVAL

A. Remove masonry anchors, brackets, wood nailers, and other extraneous items no longer in use unless identified as historically significant or indicated to remain.

1. Remove items carefully to avoid spalling or cracking masonry. 2. Where directed, if an item cannot be removed without damaging surrounding

masonry, do the following:

a. Cut or grind off item approximately 3/4 inch beneath surface and core drill a recess of same depth in surrounding masonry as close around item as practical.

b. Immediately paint exposed end of item with two coats of antirust coating, following coating manufacturer's written instructions and without exceeding manufacturer's recommended dry film thickness per coat. Keep paint off sides of recess.

3. Patch the hole where each item was removed unless directed to remove and replace the masonry unit.

3.3 BRICK REMOVAL AND REPLACEMENT

A. At locations indicated, remove bricks that are damaged, spalled, or deteriorated or are to be reused. Carefully demolish or remove entire units from joint to joint, without damaging surrounding masonry, in a manner that permits replacement with full-size units.

1. When removing single bricks, remove material from center of brick and work toward outside edges.

B. Support and protect remaining masonry that surrounds removal area. Maintain flashing, reinforcement, lintels, and adjoining construction in an undamaged condition.

C. Notify Owner of unforeseen detrimental conditions including voids, cracks, bulges, and loose units in existing masonry backup, rotted wood, rusted metal, and other deteriorated items.

D. Remove in an undamaged condition as many whole bricks as possible.

1. Remove mortar, loose particles, and soil from brick by cleaning with hand chisels, brushes, and water.

2. Remove sealants by cutting close to brick with utility knife and cleaning with solvents.

3. Store brick for reuse. Store off ground, on skids, and protected from weather. 4. Deliver cleaned brick not required for reuse to Owner unless otherwise indicated.



04900 - 20

E. Clean bricks surrounding removal areas by removing mortar, dust, and loose particles in preparation for replacement.

F. Replace removed damaged brick with other removed brick and salvaged brick in good quality, where possible, or with new brick matching existing brick, including size. Do not use broken units unless they can be cut to usable size.

G. Install replacement brick into bonding and coursing pattern of existing brick. If cutting is required, use a motor-driven saw designed to cut masonry with clean, sharp, unchipped edges.

1. Maintain joint width for replacement units to match existing joints. 2. Use setting buttons or shims to set units accurately spaced with uniform joints.

H. Lay replacement brick with completely filled bed, head, and collar joints. Butter ends with sufficient mortar to fill head joints and shove into place. Wet both replacement and surrounding bricks that have ASTM C 67 initial rates of absorption (suction) of more than 30 g/30 sq. in. per min. Use wetting methods that ensure that units are nearly saturated but surface is dry when laid.

1. Tool exposed mortar joints in repaired areas to match joints of surrounding existing brickwork.

2. Rake out mortar used for laying brick before mortar sets and point new mortar joints in repaired area to comply with requirements for repointing existing masonry, and at same time as repointing of surrounding area.

3. When mortar is sufficiently hard to support units, remove shims and other devices interfering with pointing of joints.

3.4 REANCHORING VENEERS

A. Install masonry repair anchors in horizontal mortar joints and according to manufacturer's written instructions. Install at not more than 16 inches o.c. vertically and 32 inches o.c. horizontally unless otherwise indicated. Install at locations to avoid penetrating flashing.

B. Recess anchors at least 5/8 inch from surface of mortar joint and fill recess with pointing mortar.

3.5 PAINTING STEEL UNCOVERED DURING THE WORK

A. Inspect steel exposed during masonry removal. Where Owner determines that it is structural, or for other reasons cannot be totally removed, prepare and paint it as follows:

1. Remove paint, rust, and other contaminants according to SSPC-SP 2, "Hand Tool Cleaning” as applicable to meet paint manufacturer's recommended preparation.



04900 - 21

2. Immediately paint exposed steel with two coats of antirust coating, following coating manufacturer's written instructions and without exceeding manufacturer's recommended rate of application (dry film thickness per coat).

B. If on inspection and rust removal, the cross section of a steel member is found to be reduced from rust by more than 1/16 inch notify Owner before proceeding.

3.6 MASONRY UNIT PATCHING

A. Patch the following masonry units unless another type of replacement or repair is indicated:

1. Units indicated to be patched. 2. Units with holes. 3. Units with chipped edges or corners. 4. Units with small areas of deep deterioration.

B. Remove and replace existing patches unless otherwise indicated or approved by Owner.

C. Patching Bricks:

1. Remove loose material from masonry surface. Carefully remove additional material so patch will not have feathered edges but will have square or slightly undercut edges on area to be patched and will be at least 1/4 inch thick, but not less than recommended by patching compound manufacturer.

2. Mask adjacent mortar joint or rake out for repointing if patch will extend to edge of masonry unit.

3. Mix patching compound in individual batches to match each unit being patched. Combine one or more colors of patching compound, as needed, to produce exact match.

4. Rinse surface to be patched and leave damp, but without standing water. 5. Brush-coat surfaces with slurry coat of patching compound according to

manufacturer's written instructions. 6. Place patching compound in layers as recommended by patching compound

manufacturer, but not less than 1/4 inch or more than 2 inches thick. Roughen surface of each layer to provide a key for next layer.

7. Trowel, scrape, or carve surface of patch to match texture and surrounding surface plane or contour of the masonry unit. Shape and finish surface before or after curing, as determined by testing, to best match existing masonry unit.

8. Keep each layer damp for 72 hours or until patching compound has set.

3.7 WIDENING JOINTS

A. Do not widen a joint, except where indicated or approved by Owner.



04900 - 22

B. Location Guideline: Where an existing masonry unit abuts another or the joint is less than 1/8 inch widen the joint for length indicated and to depth required for repointing after obtaining Owner's approval.

C. Carefully perform widening by cutting, grinding, routing, or filing procedures demonstrated in an approved mockup.

D. Widen joint to width equal to or less than predominant width of other joints on building. Make sides of widened joint uniform and parallel. Ensure that edges of units along widened joint are in alignment with joint edges at unaltered joints.

3.8 CLEANING MASONRY, GENERAL

A. Proceed with cleaning in an orderly manner; work from top to bottom of each scaffold width and from one end of each elevation to the other. Ensure that dirty residues and rinse water will not wash over cleaned, dry surfaces.

B. Use only those cleaning methods indicated for each masonry material and location.

1. Do not use wire brushes or brushes that are not resistant to chemical cleaner being used. Do not use plastic-bristle brushes if natural-fiber brushes will resist chemical cleaner being used.

2. Use spray equipment that provides controlled application at volume and pressure indicated, measured at spray tip. Adjust pressure and volume to ensure that cleaning methods do not damage masonry.

a. Equip units with pressure gages.

3. For chemical-cleaner spray application, use low-pressure tank or chemical pump suitable for chemical cleaner indicated, equipped with cone-shaped spray tip.

4. For water-spray application, use fan-shaped spray tip that disperses water at an angle of 25 to 50 degrees.

5. For high-pressure water-spray application, use fan-shaped spray tip that disperses water at an angle of at least 40 degrees.

6. For heated water-spray application, use equipment capable of maintaining temperature between 140 and 160 deg F (60 and 71 deg C) at flow rates indicated.

7. For steam application, use steam generator capable of delivering live steam at nozzle.

C. Perform each cleaning method indicated in a manner that results in uniform coverage of all surfaces, including corners, moldings, and interstices, and that produces an even effect without streaking or damaging masonry surfaces.



04900 - 23

D. Water Application Methods:

1. Water-Soak Application: Soak masonry surfaces by applying water continuously and uniformly to limited area for time indicated. Apply water at low pressures and low volumes in multiple fine sprays using perforated hoses or multiple spray nozzles. Erect a protective enclosure constructed of polyethylene sheeting to cover area being sprayed.

2. Water-Spray Applications: Unless otherwise indicated, hold spray nozzle at least 6 inches from surface of masonry and apply water in horizontal back and forth sweeping motion, overlapping previous strokes to produce uniform coverage.

E. Steam Cleaning: Apply steam to masonry surfaces at the very low pressures indicated for each type of masonry material. Hold nozzle at least 6 inches from surface of masonry and apply steam in horizontal back and forth sweeping motion, overlapping previous strokes to produce uniform coverage.

F. Chemical-Cleaner Application Methods: Apply chemical cleaners to masonry surfaces to comply with chemical-cleaner manufacturer's written instructions; use brush or spray application. Do not spray apply at pressures exceeding 50 psi (345 kPa). Do not allow chemicals to remain on surface for periods longer than those indicated or recommended by manufacturer.

G. Rinse off chemical residue and soil by working upward from bottom to top of each treated area at each stage or scaffold setting. Periodically during each rinse, test pH of rinse water running off of cleaned area to determine that chemical cleaner is completely removed.

1. Apply neutralizing agent and repeat rinse if necessary to produce tested pH of between 6.7 and 7.5.

H. After cleaning is complete, remove protection no longer required. Remove tape and adhesive marks.

3.9 PRELIMINARY CLEANING

A. Removing Plant Growth: Completely remove visible plant, moss, and shrub growth from masonry surfaces. Carefully remove plants, creepers, and vegetation by cutting at roots and allowing to dry as long as possible before removal. Remove loose soil and debris from open masonry joints to whatever depth they occur.

B. Preliminary Cleaning: Before beginning general cleaning, remove extraneous substances that are resistant to cleaning methods being used. Extraneous substances include paint, calking, asphalt, and tar.

1. Carefully remove heavy accumulations of material from surface of masonry with a sharp chisel. Do not scratch or chip masonry surface.



04900 - 24

2. Remove paint and calking with alkaline paint remover.

a. Comply with requirements in "Paint Removal" Article. b. Repeat application up to two times if needed.

3. Remove asphalt and tar with solvent-type paint remover.

a. Comply with requirements in "Paint Removal" Article. b. Apply paint remover only to asphalt and tar by brush without prewetting. c. Allow paint remover to remain on surface for 10 to 30 minutes. d. Repeat application if needed.

3.10 PAINT REMOVAL

A. Paint Removal with Alkaline Paste Paint Remover:

1. Remove loose and peeling paint using low-pressure spray, scrapers, stiff brushes, or a combination of these. Let surface dry thoroughly.

2. Apply paint remover to dry, painted masonry with brushes. 3. Allow paint remover to remain on surface for period recommended by

manufacturer. 4. Rinse with cold water applied by low-pressure spray to remove chemicals and

paint residue. 5. Repeat process if necessary to remove all paint. 6. Apply acidic cleaner or manufacturer's recommended afterwash to masonry, while

surface is still wet, using low-pressure spray equipment or soft-fiber brush. Let cleaner or afterwash remain on surface as a neutralizing agent for period recommended by chemical cleaner or afterwash manufacturer.

7. Rinse with cold water applied by low pressure spray to remove chemicals and soil.

B. Paint Removal with Covered or Skin-Forming Alkaline Paint Remover:

1. Remove loose and peeling paint using low-pressure spray, scrapers, stiff brushes, or a combination of these. Let surface dry thoroughly.

2. Apply paint remover to dry, painted masonry with trowel, spatula, or as recommended by manufacturer.

3. Apply cover, if required by manufacturer, per manufacturer's written instructions. 4. Allow paint remover to remain on surface for period recommended by

manufacturer or as determined in test panels. 5. Scrape off paint and remover and collect for disposal. 6. Rinse with cold water applied by low pressure spray to remove chemicals and

paint residue. 7. Use alkaline paste paint remover, according to "Paint Removal with Alkaline

Paste Paint Remover" Paragraph, if necessary to remove remaining paint.



04900 - 25

8. Apply acidic cleaner or manufacturer's recommended afterwash to masonry, while surface is still wet, using low-pressure spray equipment or soft-fiber brush. Let cleaner or afterwash remain on surface as a neutralizing agent for period recommended by chemical-cleaner or afterwash manufacturer.

9. Rinse with cold water applied by low-pressure spray to remove chemicals and soil.

C. Paint Removal with Solvent-Type Paint Remover:

1. Remove loose and peeling paint using low pressure spray, scrapers, stiff brushes, or a combination of these. Let surface dry thoroughly.

2. Apply thick coating of paint remover to painted masonry with natural-fiber cleaning brush, deep-nap roller, or large paint brush.

3. Allow paint remover to remain on surface for period recommended by manufacturer. Agitate periodically with stiff-fiber brush.

4. Rinse with cold water applied by low pressure spray to remove chemicals and paint residue.

3.11 CLEANING BRICKWORK

A. Cold-Water Soak:

1. Apply cold water by intermittent spraying to keep surface moist. 2. Use perforated hoses or other means that will apply a fine water mist to entire

surface being cleaned. 3. Apply water in cycles with at least 30 minutes between cycles. 4. Continue spraying until surface encrustation has softened sufficiently to permit its

removal by water wash, as indicated by cleaning tests. 5. Continue spraying for 72 hours. 6. Remove soil and softened surface encrustation from masonry with cold water

applied by low-pressure spray.

B. Cold-Water Wash: Use cold water applied by low - pressure spray.

C. Hot-Water Wash: Use hot water applied by low-pressure spray.

D. Steam Cleaning: Apply steam at very low pressures not exceeding 30 psi. Remove dirt softened by steam with wood scrapers, stiff-nylon or -fiber brushes, or cold-water wash, as indicated by cleaning tests.

E. Detergent Cleaning:

1. Wet masonry with cold water applied by low-pressure spray. 2. Scrub masonry with detergent solution using medium-soft brushes until soil is

thoroughly dislodged and can be removed by rinsing. Use small brushes to remove soil from mortar joints and crevices. Dip brush in solution often to ensure that adequate fresh detergent is used and that masonry surface remains wet.



04900 - 26

3. Rinse with cold water applied by low-pressure spray to remove detergent solution and soil.

4. Repeat cleaning procedure above where required to produce cleaning effect established by mockup.

F. Mold, Mildew, and Algae Removal:

1. Wet masonry with cold water applied by low-pressure spray. 2. Apply mold, mildew, and algae remover by brush or low-pressure spray. 3. Scrub masonry with medium-soft brushes until mold, mildew, and algae are

thoroughly dislodged and can be removed by rinsing. Use small brushes for mortar joints and crevices. Dip brush in mold, mildew, and algae remover often to ensure that adequate fresh cleaner is used and that masonry surface remains wet.

4. Rinse with cold water applied by low-pressure spray to remove mold, mildew, and algae remover and soil.

5. Repeat cleaning procedure above where required to produce cleaning effect established by mockup.

G. Nonacidic Gel Chemical Cleaning:

1. Wet masonry with cold water applied by low-pressure spray. 2. Apply nonacidic gel cleaner in 1/8-inch (3-mm) thickness by brush, working into

joints and crevices. Apply quickly and do not brush out excessively so area will be uniformly covered with fresh cleaner and dwell time will be uniform throughout area being cleaned.

3. Let cleaner remain on surface for period indicated below:

a. As recommended by chemical-cleaner manufacturer. b. As established by mockup.

4. Remove bulk of nonacidic gel cleaner by squeegeeing into containers for disposal. 5. Rinse with cold water applied by low-pressure spray to remove chemicals and

soil. 6. Repeat cleaning procedure above where required to produce cleaning effect

established by mockup. Do not repeat more than once. If additional cleaning is required, use steam cleaning.

H. Nonacidic Liquid Chemical Cleaning:

1. Wet masonry with cold water applied by low-pressure spray. 2. Apply cleaner to masonry in two applications by brush or low-pressure spray. Let

cleaner remain on surface for period indicated below:

a. As recommended by chemical-cleaner manufacturer. b. As established by mockup. c. Two to three minutes.



04900 - 27


4. Repeat cleaning procedure above where required to produce cleaning effect established by mockup. Do not repeat more than once. If additional cleaning is required, use steam cleaning.

I. Mild Acidic Chemical Cleaning:

1. Wet masonry with cold water applied by low-pressure spray. 2. Apply cleaner to masonry in two applications by brush. Let cleaner remain on

surface for period indicated below:

a. As recommended by chemical-cleaner manufacturer. b. As established by mockup. c. Two to three minutes.


4. Repeat cleaning procedure above where required to produce cleaning effect established by mockup. Do not repeat more than once. If additional cleaning is required, use a steam cleaning.

3.12 REPOINTING MASONRY

A. Rake out and repoint joints to the following extent:

1. All joints in areas indicated. 2. Joints where mortar is missing or where they contain holes. 3. Cracked joints where cracks can be penetrated at least 1/4 inch by a knife blade

0.027 inch (0.7 mm) thick. 4. Cracked joints where cracks are 1/16 inch or more in width and of any depth. 5. Joints where they sound hollow when tapped by metal object. 6. Joints where they are worn back 1/4 inch or more from surface. 7. Joints where they are deteriorated to point that mortar can be easily removed by

hand, without tools. 8. Joints where they have been filled with substances other than mortar. 9. Joints indicated as sealant-filled joints.

B. Do not rake out and repoint joints where not required.

C. Rake out joints as follows, according to procedures demonstrated in approved mockup:

1. Remove mortar from joints to depth of 2 times joint width, but not less than 1/2 inch or not less than that required to expose sound, unweathered mortar.

2. Remove mortar from masonry surfaces within raked-out joints to provide reveals with square backs and to expose masonry for contact with pointing mortar. Brush, vacuum, or flush joints to remove dirt and loose debris.



04900 - 28

3. Do not spall edges of masonry units or widen joints. Replace or patch damaged masonry units as directed by Owner.

a. Cut out mortar by hand with chisel and resilient mallet. Do not use power-operated grinders without Owner's written approval based on approved quality-control program.

b. Cut out center of mortar bed joints using angle grinders with diamond-impregnated metal blades. Remove remaining mortar by hand with chisel and resilient mallet. Strictly adhere to approved quality-control program.

D. Notify Owner of unforeseen detrimental conditions including voids in mortar joints, cracks, loose masonry units, rotted wood, rusted metal, and other deteriorated items.

E. Pointing with Mortar:

1. Rinse joint surfaces with water to remove dust and mortar particles. Time rinsing application so, at time of pointing, joint surfaces are damp but free of standing water. If rinse water dries, dampen joint surfaces before pointing.

2. Apply pointing mortar first to areas where existing mortar was removed to depths greater than surrounding areas. Apply in layers not greater than 3/8 inch until a uniform depth is formed. Fully compact each layer thoroughly and allow it to become thumbprint hard before applying next layer.

3. After low areas have been filled to same depth as remaining joints, point all joints by placing mortar in layers not greater than 3/8 inch Fully compact each layer and allow to become thumbprint hard before applying next layer. Where existing masonry units have worn or rounded edges, slightly recess finished mortar surface below face of masonry to avoid widened joint faces. Take care not to spread mortar beyond joint edges onto exposed masonry surfaces or to featheredge the mortar.

4. When mortar is thumbprint hard, tool joints to match original appearance of joints as demonstrated in approved mockup. Remove excess mortar from edge of joint by brushing.

5. Cure mortar by maintaining in thoroughly damp condition for at least 72 consecutive hours including weekends and holidays.

a. Acceptable curing methods include covering with wet burlap and plastic sheeting, periodic hand misting, and periodic mist spraying using system of pipes, mist heads, and timers.

b. Adjust curing methods to ensure that pointing mortar is damp throughout its depth without eroding surface mortar.

6. Hairline cracking within the mortar or mortar separation at edge of a joint is unacceptable. Completely remove such mortar and repoint.

F. Pointing with Sealant:

1. After raking out, keep joints dry and free of mortar and debris.



04900 - 29

2. Clean and prepare joint surfaces according to Division 07 Section "Joint Sealants."Prime joint surfaces unless sealant manufacturer recommends against priming. Do not allow primer to spill or migrate onto adjoining surfaces.

3. Fill sealant joints with specified joint sealant according to Division 07 Section "Joint Sealants" and the following:

a. Install cylindrical sealant backing beneath the sealant, except where space is insufficient. There, install bond-breaker tape.

b. Install sealant using only proven installation techniques that will ensure that sealant will be deposited in a uniform, continuous ribbon, without gaps or air pockets, and with complete wetting of the joint bond surfaces equally on both sides. Fill joint flush with surrounding masonry and matching the contour of adjoining mortar joints.

c. Install sealant as recommended by sealant manufacturer but within the following general limitations, measured at the center (thin) section of the bead:

1) Fill joints to a depth equal to joint width, but not more than 1/2 inch deep or less than 1/4 inch deep.

d. Immediately after first tooling, apply ground-mortar aggregate to sealant, gently pushing aggregate into the surface of sealant. Retool sealant to form smooth, uniform beads, slightly concave. Remove excess sealant and aggregate from surfaces adjacent to joint.

e. Do not allow sealant to overflow or spill onto adjoining surfaces, or to migrate into the voids of adjoining surfaces, particularly rough textures. Remove excess and spillage of sealant promptly as the work progresses. Clean adjoining surfaces by the means necessary to eliminate evidence of spillage, without damage to adjoining surfaces or finishes, as demonstrated in an approved mockup.

4. Cure sealant according to Division 07 Section "Joint Sealants."

G. Where repointing work precedes cleaning of existing masonry, allow mortar to harden at least 30 days before beginning cleaning work.

3.13 FINAL CLEANING

A. After mortar has fully hardened, thoroughly clean exposed masonry surfaces of excess mortar and foreign matter; use wood scrapers, stiff-nylon or -fiber brushes, and clean water, spray applied at low pressure.

1. Do not use metal scrapers or brushes. 2. Do not use acidic or alkaline cleaners.



04900 - 30

B. Wash adjacent woodwork and other nonmasonry surfaces. Use detergent and soft brushes or cloths.

C. Clean mortar and debris from roof; remove debris from gutters and downspouts. Rinse off roof and flush gutters and downspouts.

D. Sweep and rake adjacent pavement and grounds to remove mortar and debris. Where necessary, pressure wash pavement surfaces to remove mortar, dust, dirt, and stains.


A. Inspectors: Owner will engage qualified independent inspectors to perform inspections and prepare test reports. Allow inspectors use of lift devices and scaffolding, as needed, to perform inspections.

B. Owner's Project Representatives: Owner will assign Project representatives to help carry out Owner's responsibilities at the site, including observing progress and quality of portion of the Work completed. Allow Owner's Project representatives use of lift devices and scaffolding, as needed, to observe progress and quality of portion of the Work completed.

C. Notify Owner's Project representatives in advance of times when lift devices and scaffolding will be relocated. Do not relocate lift devices and scaffolding until Owner's Project representatives have had reasonable opportunity to make observations of work areas at lift device or scaffold location.

END OF SECTION 040120

FLASHING AND SHEET METAL

Building Envelope Preventative Maintenance Repair Specification – 07600-1 Fairfield Board of Education

1 PART 1 – GENERAL 1.1 WORK INCLUDED A. Copings, gravel stops, and step flashings B. Roof flashings C. Counter flashings at membrane base flashings and roof mounted equipment and

vent stacks D. Through Wall Flashings

1.2 RELATED SECTIONS

A. Section 04900 – Maintenance of Unit Masonry B. Section 07900 – Sealants

1.3 REFERENCES

A. Reference Standards: The publications listed below form a part of this

specification to the extent referenced. The publications are referred to in the text by the basic designation only.

1. American Society for Testing and Materials (ASTM) Publications:

B 209-04 Aluminum and Aluminum Alloy Sheet and Plate D 41-94 Asphalt Primer Used in Roofing, Dampproofing and (R 2000) Waterproofing D 2822-91 Asphalt Roof Cement (R 1997)

2. NRCA (National Roofing Contractors Association) – Roofing Manual 3. Federal Specification (FS) Publications: UU-B-790 Building Paper, Vegetable Fiber

1.4 SUBMITTALS

A. Samples:

1. Sheet Metal Materials: Two pieces, 6 by 10 inches, of each type. 2. Nails and Other Fastenings: Two each.

B. Shop Drawings: Indicate thicknesses, dimensions, fastenings and anchoring methods, expansion joints and other provisions necessary for thermal expansion and contraction. Scaled catalog cuts may be submitted for factory fabricated items.



1. Gravel stops and fascias 2. Base and cap flashing (counter flashing) 3. Flashing at roof penetrations

C. Certificates of Compliance: Manufacturer's certificates attesting that materials meet specified requirements.

1.5 DELIVERY, HANDLING AND STORAGE: Package and protect materials during

shipment. Uncrate and inspect materials for damage, dampness and wet-storage stains upon delivery to the job site. Remove from the site and replace damaged materials that cannot be restored to like-new condition. Handle sheet metal items to avoid damage to surfaces, edges and ends. Store materials in dry, weather-tight, ventilated areas until immediately before installation.

1.6 GUARANTEE

A. Guarantee all work against defects in materials and workmanship for two (2) years

following final acceptance.

1. Provide duplicate original guarantees in writing on Contractor's letterhead. 2 PART 2 – PRODUCTS

2.1 MATERIALS

A. Furnish sheet metal items in 8 to 10 foot lengths. Single pieces less than 8 feet long may be used to connect to factory-fabricated inside and outside corners, and at ends of runs. Provide accessories and other items essential to complete the sheet metal installation. These accessories shall be made of the same materials as the items to which they are applied. Fabricate sheet metal items of the materials specified below and to the gage, thickness or weight specified. Sheet metal items shall have manufacturer's durinodic coating finish unless specified otherwise.

B. Exposed Sheet Metal Items: Shall be of the same material. The following items

shall be considered as exposed sheet metal: Gravel stop and fascias; base, cap and stepped flashings and accessories.

C. Combination Gravel Stop, Fascias, Base, Cap and other exposed flashings: ASTM

B 209; 0.050 inch thick aluminum (or greater if recommended by NRCA standards for exposure), with 3 coat Kynar finish (or approved equal), color to be selected by Owner from manufacturer’s custom range, meeting alloy standards 6063-T52. Provide for expansion and contraction, as well as cleats and other related items as recommended by the manufacturer.



1. Approved manufacturers:

a. Architectural Products Company, Wood Ridge, NJ (800.631.8375) or; b. Cheney Flashing Company, Trenton, NJ (800.322.2873) or;

c. Southern Aluminum Finishing Company, Atlanta, GA (800.241.7429) d. Approved equal.

D. Bituminous Plastic Cement: ASTM D 2822, Type I.

E. Building Paper: FS UU-B-790, Style 4, Grade B.

F. Asphalt Primer: ASTM D 41.

G. Fastener: Use the same metal or a metal compatible with the item fastened. Use

stainless steel fasteners to fasten dissimilar materials. At existing installations removed for reinstallation, use fasteners identical to those existing so the existing installation can be reinstalled without damage to existing masonry or blocking.

H. Copper Sheet: ASTM B 370, cold-rolled copper sheet, H00 or H01 temper 1. Non-Patinated Exposed Finish: Mill I. Stainless-Steel Sheet: ASTM A 240/A 240M or ASTM A 666, Type 316, dead

soft, fully annealed. 1. Finish: 2D (dull, cold rolled)

2.2 MANUFACTURED SHEET METAL FLASHING AND TRIM

A. Through-Wall Ribbed Sheet Metal Flashing: Manufacture through-wall sheet metal flashing for embedment in masonry with ribs at 3-inch intervals along length of flashing to provide an integral mortar bond. Manufacture through-wall flashing with interlocking counterflashing on exterior face, of same metal as reglet.

1. Copper: 16 oz. minimum for fully concealed flashing.

a. Products: Subject to compliance with requirements, available products that may be incorporated into the Work include, but are not limited to, the following:

1) Cheney Flashing Company; Cheney Flashing (Dovetail). 2) Cheney Flashing Company; Cheney Flashing (Sawtooth). 3) Hohmann & Barnard, Inc.; STF Sawtooth Flashing. 4) Keystone Flashing Company, Inc.; Keystone Three-Way Interlocking

Thruwall Flashing. 5) Sandell Manufacturing Company, Inc.; Pre-Formed Metal Flashing.



3 PART 3 – EXECUTION

3.1 INSTALLATION

A. Requirements: Make surfaces to receive sheet metal plumb and true, clean, even, smooth, dry and free of defects and projections which might affect the application. For installation of items not shown in detail or not covered by specifications conform to the applicable requirements of the SMACNA Architectural Sheet Metal Manual. Provide sheet metal flashing in the angles formed where roof decks abut curbs, ventilators, pipes or other vertical surfaces and wherever indicated and necessary to make the work watertight. Join sheet metal together as recommended by the manufacturer or by the SMACNA manual.

B. Workmanship: Make lines, arises and angles sharp and true. Free exposed

surfaces from visible wave, warp and buckle, and tool marks. Fold back exposed edges neatly to form a ½ inch hem on the concealed side. Make sheet metal exposed to the weather watertight with provisions for expansion and contraction.

C. Nailing: Confine nailing of sheet metal generally to sheet metal having a

maximum width of 18 inches. Confine nailing or flashing to one edge only. Space nails evenly not over 3 inches on centers and approximately ½ inch from edge unless otherwise specified or indicated. Face nailing will not be permitted. Where sheet metal is applied to other than wood surfaces, include in shop drawings, the locations for nailing strips required to secure the work. Nailing strips are specified in Section 06100 – Rough Carpentry.

D. Cleats: Provide cleats for sheet metal 18 inches and over in width. Cleats shall be

continuous and fastened not over 12 inches on centers unless otherwise specified or indicated. Cleating shall be of the same material and thickness as the sheet metal being installed. Secure one end of the cleat with two nails and the cleat folded back over the nail heads. Lock the other end into the seam. Pre-tin cleats for soldered seams.

E. Bolts, Rivets and Screws: Install bolts, rivets and screws where indicated or

required. Provide compatible washers where required to protect surface of sheet metal and to provide a watertight connection. Seal all exposed fasteners with sealant both under and over the fastener for both new and reinstalled work.

F. Flat-lock Seams: Finish not less than ¾ inch wide.

G. Lap Seams: Finish soldered seams not less than one inch wide. Overlap seams not

soldered, not less than 3 inches.



H. Loose-Lock Expansion Seams: Not less than 3 inches wide; provide minimum one inch movement within the joint. Completely fill the joints with the specified sealant, applied at not less than 1/8 inch thick bed. Sealants are specified in Section 07900 – Sealants.

I. Protection from Contact with Dissimilar Materials:

1. Metal Surfaces: Paint surfaces in contact with mortar, concrete or other

masonry materials with alkali-resistant coatings such as heavy-bodied bituminous paint.

2. Wood or Other Absorptive Materials: Paint surfaces that may become repeatedly wet and in contact with metal with two coats of aluminum paint or a coat of heavy-bodied bituminous paint.

J. Base Flashing: Extend up vertical surfaces of the flashing not less than 8 inches

and not less than 4 inches under the roof covering. Where finish wall coverings form a counter flashing, extend the vertical leg of the flashing up behind the applied wall covering not less than 6 inches. Overlap the flashing strips with the previously laid flashing not less than 3 inches. Fasten the strips at their upper edge to the deck, with compatible, large-head roofing nails. Extend the metal flashing over crickets at the up-slope side of curbs, and similar vertical surfaces extending through sloping roofs, the metal flashings. Install and fit the flashings so as to be completely weather-tight. Base flashing for interior and exterior corners shall be factory-fabricated.

K. Counter Flashing: Except where indicated or specified otherwise, insert counter

flashing in new cut-out reglets located from 9 to 10 inches above the new roof deck in the existing masonry walls, extend down vertical surfaces over upturned vertical leg of base flashings not less than 3 inches. Fold the exposed edges of counter flashings ½ inch. Where stepped counter flashings are required, they may be installed in short lengths or may be of the preformed one-piece type. Provide end laps in counter flashings not less than 3 inches and make it weather-tight with plastic cement. Do not make lengths of metal counter flashings exceed 10 feet. Form the flashings to the required shapes before installation. Factory-form the corners not less than 12 inches from the angle. Secure the flashings in the reglets with lead wedges and space not more than 18 inches apart; on short runs, place wedges closer together. Fill caulked-type reglets or raked joints which receive counter flashing with caulking compound. Caulking is covered in Section 07900, "Sealants." Turn up the concealed edge of counter flashings built into masonry or concrete walls not less than ¼ inch and extend not less than 2 inches into the walls. Install counter flashing to provide a spring action against base flashing.



L. Expansion and Contraction: Provide expansion and contraction joints at not more 32 foot intervals for aluminum and at not more than 40 foot intervals for other metals. Where the distance between the last expansion joint and the end of the continuous run is more than half the required interval, an additional joint shall be

provided. Space joints evenly.

M. Gravel Stops and Roof Edge Fascias: Prefabricate in the shapes and sizes indicated and in lengths not less than 8 feet. Extend flange at least 4 inches onto roofing. Provide prefabricated, mitered corners internal and external corners. Install gravel stops and fascias after all plies of the roofing membrane have been applied, but before the flood coat of bitumen is applied. Prime roof flange of gravel stops and fascias on both sides with an asphalt primer. After primer has dried, set flange on roofing membrane and strip-in as specified in Section 07531 – Elastomeric Sheet Roofing. Nail flange securely to wood nailer with large-head, barbed-shank roofing nails 1.5 inches long spaced not more than 3 inches on centers.

1. Edge Strip: Hook the lower edge of fascias at least ¾ inch over a continuous

strip of the same material bent outward at an angle not more than 45 degrees to form a drip. Nail hook strip to a wood nailer at 6 inches maximum on centers. Where fastening is made to concrete or masonry, use screws spaced 12 inches on centers driven in expansion shields set in the concrete or masonry. Where horizontal wood nailers are slotted to provide for insulation venting, install strips to prevent obstruction of vent slots. Where necessary, install strips over 1/16 inch thick compatible spacer or washers.

2. Joints: Leave open the section ends of gravel stops and fascias ¼ inch and

backed with a formed flashing plate, mechanically fastened in place and lapping each section end a minimum of 4 inches set laps in plastic cement. Face nailing will not be permitted.

N Flashing at Roof Penetrations and Equipment Supports: Provide metal flashing for

all pipes, ducts and conduits projecting through the roof surface and for equipment supports, guy wire anchors and similar items supported by or attached to the roof deck. Provide new or salvage existing rain hoods, ventilator shields, etc.



1. Single Pipe Vents: Set flange of sleeve in cement and nail 3 inches on centers. Bend the top of sleeve over and extend down into the vent pipe a minimum of 2 inches. For long runs or long rises above the deck, where it is impractical to cover the vent pipe with lead, use a two-piece formed metal housing. Set metal housing with a metal sleeve having a 4 inch roof flange in bituminous plastic cement and nailed 3 inches on centers. Extend sleeve a minimum of 8 inches above the roof deck and lapped a minimum of 3 inches by a metal hood secured to the vent pipe by a draw band. Seal the area of hood in contact with vent pipe with an approved sealant. Sealants are covered under Section 07900, "Sealants."

O. Wall Flashing Installation

1. General: Install sheet metal wall flashing to intercept and exclude penetrating moisture according to SMACNA recommendations and as indicated. Coordinate installation of wall flashing with installation of wall-opening components such as windows, doors, and louvers.

2. Through-Wall Flashing: Installation of through-wall flashing is specified in

Division 04 Section "Maintenance of Unit Masonry."

3. Reglets: Installation of reglets is specified in Division 04 Section "Maintenance of Unit Masonry.

3.2 PAINTING: Field-paint sheet metal for separation of dissimilar materials. 3.3 CLEANING

A. Clean exposed sheet metal work at completion of installation. Remove grease and

oil films, handling marks, contamination from steel wool, fittings and drilling debris and scrub-clean. Free the exposed metal surfaces of dents, creases, waves, scratch marks and solder or weld marks.

3.4 REPAIRS TO FINISH

A. Scratches, abrasions and minor surface defects of finish may be repaired in

accordance with the manufacturer's printed instructions and as approved. Repair damaged surfaces caused by scratches, blemishes and variations of color and surface texture. Replace items which cannot be repaired.




A. Establish and maintain a quality control procedure for sheet metal used in conjunction with roofing to assure compliance of the installed sheet metalwork with the contract requirements. Work not in compliance with the contract shall be promptly removed and replaced or corrected. Quality control shall include, but not be limited to, the following:

1. Observation of environmental conditions; number and skill level of sheet

metal workers; condition of substrate. 2. Verification of compliance before, during and after installation. 3. Inspection of sheet metalwork, for proper size and thickness, fastening and

joining and proper installation.

B. Procedure: Submit for approval prior to start of roofing work. Include a checklist of points to be observed. Document the actual quality control observations and inspections.

END OF SECTION

SEALANTS


1 PART 1 – GENERAL 1.1 SECTION INCLUDES

A. Testing of Existing Sealants B. Building Sealants

1.2 RELATED SECTIONS A. Section 04900 – Maintenance of Unit Masonry 1.3 REFERENCES A. Reference Standards: The publications listed below form a part of this


1. American Society for Testing and Materials (ASTM) Publications: C 920-02 Elastomeric Joint Sealants 1.4 SUBMITTALS A. Certificates of Conformance: Submit certificates from the manufacturers attesting

that materials meet the specified requirements. B. Manufacturers' Data: Clearly mark data to identify material type to be provided. C. Sealants: Data for sealant shall include: 1. Application instructions and precautions 2. Shelf life 3. Mixing instructions for multi-component sealants 4. Recommended cleaning solvents D. Primer(s) E. Backstop Material(s) F. Colors: Submit one sample of each color for each sealant type to verify that

products match the colors indicated. Where colors are not indicated, submit not less than 3 different samples of manufacturers' standard colors for selection by the Owner.

SEALANTS


G. Manufacturer's Test Report: Indicate sealant compatibility with commonly used substrates.

1.5 SAMPLE JOINTS: Before sealant work is started, provide a sample of each type of

finished joint where directed. Sample shall show the workmanship, bond and color of sealant. The workmanship, bond and color of sealant throughout the project shall match the approved sample joints.

1.6 ENVIRONMENTAL CONDITIONS: The ambient temperature shall be within the

limits of 40 and 100 degrees F when sealant is applied.

1.7 DELIVERY AND STORAGE: Deliver materials to the job site in unopened manufacturers' external shipping containers, with brand names, date of manufacture, color and material designation clearly marked thereon. Elastomeric sealant containers shall be labeled to identify type, class, grade and use. Carefully handle and store materials to prevent inclusion of foreign materials or subjection to sustained temperatures exceeding 100 degrees F or less than 40 degrees F.

1.8 SPECIAL TESTS

A. Special Tests – The owner will pay for the services of a licensed laboratory to conduct special tests as follows:

1. Existing sealants and roof flashings to be removed and tested for hazardous materials.

2. The Contractor will notify the Owner if such substances are found or not and provide a copy of the test report.

3. The Contractor shall develop a plan of action with the owner for abatement or removal of any hazardous sealant material by a qualified contractor.

4. The Contractor(s) shall provide the Owner with written statement of the removal and proper disposal of any hazardous material and the chain of custody for any hazardous material.

2 PART 2 – PRODUCTS 2.1 SEALANTS: Provide one part polysulfide sealants that have been tested and found

suitable for the substrates to which it will be applied. A. Exterior Sealant: For joints in vertical surfaces, provide ASTM C 920, Type S,

Class 25, Grade NS, Use NT. For joints at aluminum surfaces, provide ASTM C 920, Type S, Class 25, Grade NS, Use A. For joints in horizontal surfaces, provide ASTM C 920, Type S, Class 25, Use T. Location(s) and color(s) of sealant shall be as follows:

SEALANTS


LOCATION COLOR 1. Joints and recesses formed where frames and adjacent subsills Match

of doors, windows and louvers, adjoin masonry, concrete and adjacent metal frames; color to be selected by Owner color

2. Metal-to-metal joints where sealant is indicated or specified Gray

3. Expansion and control joints Black 4. Joints between ends of gravel stops, fascias, copings and Gray

adjacent walls. 5. Masonry joints Match Mortar

B. Manufacturers: The following manufacturers are approved for use: 1. Tremco Incorporated, Ashland, OH (800.321.7906) or; 2. Pecora Corporation, Harleysville, PA (800.523.6688) or; 3. Sika Corporation, Lyndhurst, NJ (800.933.7452) or; 4. OSI manufactured by the Henkel Corporation 5. Substitutions: In accordance with Section 01300

2.2 PRIMER FOR SEALANT: Provide a nonstaining, quick-drying type of consistency

recommended by the sealant manufacturer for the particular application. 2.3 BOND BREAKERS: Provide the type and consistency recommended by the sealant

manufacturer for the particular application. 2.4 BACKSTOPS: Provide glass fiber roving or neoprene, butyl, polyurethane or

polyethylene foams free from oil or other staining elements as recommended by sealant manufacturer. Backstop material shall be compatible with sealant.

2.5 CLEANING SOLVENTS: Provide type(s) recommended by the sealant manufacturer. 3 PART 3 – EXECUTION 3.1 SURFACE PREPARATION: Surfaces shall be clean, dry to the touch and free from

dirt, frost, moisture, grease, oil, wax, lacquer, paint and other foreign matter that would tend to destroy or impair adhesion. When resealing an existing joint, remove existing caulk or sealant prior to applying new sealant.

SEALANTS


A. Steel Surfaces: Remove loose mill scale by sandblasting or, if sandblasting is impractical or would damage finish work, scraping and wire brushing. Remove protective coatings by sandblasting or using a residue-free solvent.

B. Aluminum or Bronze Surfaces: Remove temporary protective coatings from

surfaces that will be in contact with sealant. When masking tape is used as a protective coating, remove tape and any residual adhesive just prior to sealant application. For removing protective coatings and final cleaning, use nonstaining solvents recommended by the manufacturer of the item(s) containing aluminum or bronze surfaces.

3.2 SEALANT PREPARATION: Do not add liquids, solvents or powders to the sealant.

Mix multi-component elastomeric sealants in accordance with manufacturer's instructions.

3.3 APPLICATION A. Joint Width-To-Depth Ratios: 1. Acceptable Ratios: JOINT WIDTH Minimum Maximum For metal, glass, or other nonporous surfaces: ¼ inch (minimum) ¼ inch ¼ inch Over ¼ inch ½ of width Equal to width For wood: ¼ inch (minimum) ¼ inch ¼ inch Over ¼ inch to ½ inch ¼ inch Equal to width Over ½ inch to 2 inches ½ inch 5/8 inch Over 2 inches (As recommended by sealant

manufacturer) 2. Unacceptable Ratios: Where joints of acceptable width-to-depth ratios have

not been provided, clean out joints to acceptable depths and grind or cut to acceptable widths without damage to the adjoining work. Grinding shall not be required on metal surfaces.

SEALANTS


B. Backstops: Install backstops dry and free of tears or holes. Tightly pack the back or bottom of joint cavities with backstop material to provide a joint of the depth specified. Install backstops in the following locations:

1. Where indicated. 2. Where backstop is not indicated but joint cavities exceed the acceptable

maximum depths specified in paragraph entitled, "Joint Width-to-Depth Ratios."

C. Primer: Immediately prior to application of sealant, clean out loose particles from

joints. Where recommended by sealant manufacturer, apply primer to joints in concrete masonry units, wood and other porous surfaces in accordance with sealant manufacturer's instructions. Do not apply primer to exposed finish surfaces.

D. Bond Breaker: Provide bond breakers to the back or bottom of joint cavities, as

recommended by the sealant manufacturer for each type of joint and sealant used, to prevent sealant from adhering to these surfaces. Carefully apply the bond breaker to avoid contamination of adjoining surfaces or breaking bond with surfaces other than those covered by the bond breaker.

E. Sealants: Provide a sealant compatible with the material(s) to which it is applied.

Do not use a sealant that has exceeded shelf life or has jelled and can not be discharged in a continuous flow from the gun. Apply the sealant in accordance with the manufacturer's instructions with a gun having a nozzle that fits the joint width. Force sealant into joints to fill the joints solidly without air pockets. Tool sealant after application to ensure adhesion. Sealant shall be uniformly smooth and free of wrinkles. Upon completion of sealant application, roughen partially filled or unfilled joints, apply sealant and tool smooth as specified.

3.4 PROTECTION AND CLEANING A. Protection: Protect areas adjacent to joints from sealant smears. Masking tape may

be used for this purpose if removed 5 to 10 minutes after the joint is filled. B. Final Cleaning: Upon completion of sealant application, remove remaining smears

and stains and leave the work in a clean and neat condition. 1. Masonry and Other Porous Surfaces: Immediately scrape off fresh sealant

that has been smeared on masonry and rub clean with a solvent as recommended by the sealant manufacturer. Allow excess sealant to cure for 24 hours then remove by wire brushing or sanding.

2. Metal and Other Non-Porous Surfaces: Remove excess sealant with a

solvent-moistened cloth. END OF SECTION

PAINTING


1 PART 1 – GENERAL 1.1 SECTION INCLUDES A. Surface preparation and field application of paints for lintels. B. Concrete water repellant coating 1.2 REFERENCES A. Reference Standards: The publications listed below form a part of this


1. American Society for Testing and Materials (ASTM) Publications: D 16-03 Paint, Related Coatings, Materials and Applications 1.3 DEFINITIONS A. Conform to ASTM D 16 for interpretation of terms used in this Section. 1.4 SUBMITTALS A. Submit under provisions of Section 01300. B. Product Data: Provide data on all finishing products. C. Samples: Submit two sample sleeves, illustrating range of colors available for

each surface finishing product scheduled. Architect will select colors from manufacturer's standard and custom color line.

D. Manufacturer's Instructions: Indicate special surface preparation procedures and

substrate conditions requiring special attention. 1.5 QUALIFICATIONS A. Manufacturer: Company specializing in manufacturing the Products specified in

this section with minimum three years documented experience. B. Applicator: Company specializing in performing the work of this section with

minimum five years documented experience.

PAINTING


1.6 REGULATORY REQUIREMENTS A. Conform to Connecticut Building Code for flame and smoke rating requirements

for finishes.

B. VOC Content: Provide materials that comply with VOC limits of authorities having jurisdiction, CT DEP.

1.7 DELIVERY, STORAGE AND HANDLING A. Deliver, store, protect and handle products to site under provisions of Section

01600. B. Deliver products to site in sealed and labeled containers; inspect to verify

acceptability. C. Container label to include manufacturer's name, type of paint, brand name, lot

number, brand code, coverage, surface preparation, drying time, cleanup requirements, color designation and instructions for mixing and reducing.

D. Store paint materials at minimum ambient temperature of 45 degrees F and a

maximum of 90 degrees F, in ventilated area, and as required by manufacturer's instructions.

1.8 ENVIRONMENTAL REQUIREMENTS A. Do not apply materials when surface and ambient temperatures are outside the

temperature ranges required by the paint product manufacturer. B. Minimum Application Temperatures for Latex Paints: 45 degrees F for interiors;

50 degrees F for exterior; unless required otherwise by manufacturer's instructions.

2 PART 2 – PRODUCTS 2.1 MANUFACTURERS A. Manufacturers – Paint 1. ICI Paints, Cleveland, OH (800.454.3336) 2. PPG Industries, Inc., Pittsburgh, PA (412.434.3131) 3. Sherwin Williams Stores Division (800.474.3794)

PAINTING


B. Manufacturers – Paint (Metal Surfaces) 1. Hunting Specialty Products; Product: Hammerite 2. Benjamin Moore & Co., Montvale, NJ (800.344.0400); Product: Eggshell

Finish House Paint with IronClad Galvanized Metal Latex Primer C. Manufacturers – Concrete Coating

1. Prosoco, Sure Klean® Weather Seal H40 Water Repellent, or Sure Klean®

Weather Seal Siloxane PD Water Repellent.

D. Substitutions: Under provisions of Section 01600. 2.2 MATERIALS A. Coatings: Ready mixed, except field catalyzed coatings. Process pigments to a

soft paste consistency, capable of being readily and uniformly dispersed to a homogeneous coating; good flow and brushing properties; capable of drying or curing free of streaks or sags.

B. Accessory Materials: Linseed oil, shellac, turpentine, paint thinners and other

materials not specifically indicated but required to achieve the finishes specified, of commercial quality.

C. Fastener Head Cover Materials: Latex filler. 3 PART 3 – EXECUTION 3.1 EXAMINATION A. Verify that surfaces and substrate conditions are ready to receive work as

instructed by the product manufacturer. B. Examine surfaces scheduled to be finished prior to commencement of work.

Report any condition that may potentially affect proper application. C. Test shop applied primer for compatibility with subsequent cover materials.

D. Test concrete a minimum 4 ft. by 4 ft. area on each type of masonry. Use the manufacturer’s application instructions. Let test area protective treatment cure before inspection. Keep test panels available for comparison throughout the protective treatment project.

PAINTING


3.2 PREPARATION A. Remove or mask electrical plates, hardware, light fixture trim, escutcheons and

fittings prior to preparing surfaces or finishing. B. Correct defects and clean surfaces which affect work of this section. Remove

existing coatings that exhibit loose surface defects. C. Seal with shellac and seal marks which may bleed through surface finishes. D. Existing Coatings: Remove surface irregularities by scraping or sanding to

produce uniform substrate for coating application. E. Impervious Surfaces: Remove mildew by scrubbing with solution of tri-sodium

phosphate and bleach. Rinse with clean water and allow surface to dry. F. Shop Primed Steel Surfaces: Sand and scrape to remove loose primer and rust.

Feather edges to make touch-up patches inconspicuous. Clean surfaces with solvent. Prime bare steel surfaces. Prime metal items including shop primed items with incompatible surfaces to the finished coating system.

3.3 APPLICATION A. Apply products in accordance with manufacturer's instructions. B. Do not apply finishes to surfaces that are not dry. C. Apply each coat to uniform finish. D. Apply each coat of paint slightly darker than preceding coat unless otherwise

approved. E. Sand metal lightly between coats to achieve required finish. F. Vacuum clean surfaces free of loose particles. Use tack cloth just prior to

applying next coat. G. Allow applied coat to dry before next coat is applied. H. Apply concrete sealer per manufactures specification - Spray: Saturate from the

bottom up, creating a 4” to 8” (15 to 20 cm) rundown below the spray contact point. Let the first application penetrate for 5-10 minutes. Re-saturate. Less will be needed for the second application. Brush or roller: Saturate uniformly. Let protective treatment penetrate for 5 to 10 minutes. Brush out heavy runs and drips that don’t penetrate.

PAINTING


J. Protect concrete sealer from rain for 6 hours and from pedestrian and vehicular

traffic until visibly dry. 3.4 CLEANING A. Clean work under provisions of 01700. B. Clean Concrete under provisions of 03031. B. Collect waste material which may constitute a fire hazard, place in closed metal

containers and remove daily from site. 3.5 SCHEDULE – EXTERIOR SURFACES A. Steel – Primed: 1. Touch-up with zinc chromate primer. 2. Two coats of alkyd enamel, semi-gloss. B. Steel – Galvanized:

1. One coat galvanized primer.

2. Two coats of alkyd enamel, semi-gloss.

C. Concrete – Cleaned:

1. Two saturation coats of water repellant. END OF SECTION

2018-55 Building Envelope Preventive Maintenance - Biznet

Documents

Transcript of 2018-55 Building Envelope Preventive Maintenance - Biznet