USMARC ROOF Specs '09.doc

TABLE OF CONTENTS

DIVISION 1- GENERAL REQUIREMENTS

0101 - SUMMARY OF WORK

0130 - SHOP DRAWINGS

0160 - USE OF GOVERNMENT FACILITIES (UTILITIES, ETC.)

0180 - CLEANUP

DIVISION 2-DEMOLITION

0211 – DEMOLITION AND REMOVAL

DIVISION 7-THERMAL AND MOISTURE PROTECTION

0753 – FLEXIBLE SHEET ROOFING SYSTEM

0790 – JOINT SEALERS

DIVISION 9 FINISHES

0990 - PAINTING

DIVISION I

SECTION 0101

SUMMARY OF WORK

The work consists of providing all labor, material, and equipment and performing all work to replace the roof systems on Buildings #1-24 and #2-24 (including Penthouses) and the upper roof of the Feedmill, Building #3-25. The work shall include, but shall not be limited to the following:

Buildings #1-24, #2-24 (Existing roofs are loose-laid, ballasted EPDM):

1. Removal of the rubber membrane.

2. Removal of perimeter metal cap/flashing.

3. Removal of EPDM roof systems on the penthouses down to the metal deck.

4. Removal of roof drains on Building #2-24 penthouse.

5. Installation of new sloped insulation on the penthouses.

6. Installation of new roof drains on penthouses.

7. Installation of new .060” EPDM roofing systems including ½” fiber board on roofs and penthouses, while reusing the rock ballast.

8. Installation of new perimeter metal cap/flashing.

9. Painting of roof top exhaust fans and other equipment.

10. Replacement of concrete walkway pavers and corner pavers.

Feedmill, Building #3-24 (Existing roof is directly adhered EPDM):

1. Removal of EPDM roof system down to concrete deck.

2. Cutting off of “nails” driven into concrete deck previously used for adhering insulation.

3. Caulking of small holes and covering holes too large to caulk with metal plate.

4. Installation of a new .090” directly adhered EPDM roofing system, which is to include a construction board under the rubber membrane.

SECTION 0130

SHOP DRAWINGS

1. Submit shop drawings to the Contracting Officer’s Representative (COR) for approval prior to installation. Information in the form of drawings, product literature, manufacturer’s specification, equipment lists, etc. shall be submitted on the following:

Specification

Description Drawings Literature Schedule

a. Roofing Systems x x

(all material)

b. Tapered Insulation x x

c. Paint x

The Contracting Officer may request submittals in addition to those listed when deemed necessary to adequately describe the work covered in the respective sections.

2. Each submittal shall be complete and in sufficient detail for ready determination of compliance with the contract requirements.

3. Submittal shall be submitted in four (4) copies to the COR using the transmittal form. The form shall be properly completed by filling out all the heading block spaces and identifying each item submitted. Special care should be exercised to insure proper listing of the specification paragraph and/or sheet number of the contract drawings pertinent to the data submitted for each item. A separate transmittal form shall be attached to each copy of the data being submitted.

4. Brand Name: Identification of items in the contract documents is intended to be descriptive, not restrictive, and is to indicate the quality and characteristics of products that will be satisfactory.

SECTION 0160

USE OF GOVERNMENT FACILITIES (UTILITIES, ETC.)

1. Water, Gas, Electricity:

0101, 0130, 0160

a. As mutually agreed upon between the Contractor and the COR, the Contractor may use nearby utilities required for his performance under this contract.

b. Contractor shall bear the cost of temporary connections (if necessary) and restoration upon conclusion of use.

c. The Government shall bear the cost of reasonable utility consumption. Government will not pay the cost of utilities if usage is abused.

d. The Contractor shall submit for approval written notification not less than 4 working days in advance of requirement to shut down any utilities or other services to or within existing building or facilities used by others.

2. Telephone:

a. Contractor shall arrange and pay for any telephone service they choose to provide for themselves.

3. Toilet:

a. Contractor may use building bathroom facilities as approved by owner.

4. Access to Buildings:

a. Contractor’s access to buildings shall be limited to those areas where work is being performed. This includes being restricted from the lunch room in Building #1.

5. Material Receiving:

a. Contractor shall be on-site to receive materials. Contractor shall arrange for own storage of materials unless other arrangements have been agreed to by owner.

SECTION 0180

CLEANUP

1. Cleanup:

a. The Contractor shall keep the premises clean during construction and shall remove all rejected material, rubbish, etc., after completion of work and prior to final inspection.

0160, 0180

b. Materials removed by the Contractor shall become the property of the contractor and shall be removed from the site unless otherwise agreed to by the owner.

c. Government dumpsters shall not be used by the contractor.

* End of Section

SECTION 0211

REMOVAL OF EXISTING ROOFS AND INSULATION

1. General:

a. This section includes the removal of the following:

Buildings #1, #2:

1. Building #1 - loose laid ballasted EPDM system: Removal of rubber membrane

2. Building #1 penthouse – loose laid ballasted EPDM: Removal down to metal deck

3. Walkway between Buildings. #1 and #2 - loose laid ballasted EPDM system – Removal of rubber membrane

4. Building #2 – loose laid ballasted EPDM system: Removal of rubber membrane.

5. Building #2 penthouse – loose laid ballasted EPDM system: Removal down to metal deck.

6. Removal of roof perimeter metal cap/flashing.

Feedmill:

1. Upper Feedmill Roof - fully adhered EPDM system: Removal down to cement deck

b. Contractor shall remove all materials and equipment and/or temporarily relocate equipment as required to install the new roofs. All debris shall be disposed of by the Contractor at the Contractor’s expense.

c. Demolition shall be coordinated with the COR (Contracting Officer’s

Representative)

d. Ballast on Bldgs. #1, #2, and the walkway between Bldgs. #1 and #2 shall be reused. Contractor shall provide additional ballast as required to maintain uniform thickness should existing ballast be discarded ordestroyed.

2. Liability:

a. Any damage to the facility or its contents as a result of the work under this contract shall be repaired/replaced at the contractor’s expense.

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b. It is the responsibility of the contractor to ensure that buildings are water and weather tight before leaving the job site each day.

3. Schedule:

a. A written schedule of roof removal and any equipment shutdowns shall be submitted to the COR, for approval, at least one week prior to the commencement of work on a roof.

b. It will not be permitted to remove the entire roof at once.

4. Safety:

a. Contractor shall discuss with owner, safety considerations with regard to fume hood exhaust on Buildings #1 and #2 prior to beginning work.

b. Debris shall be loaded off of roofs and on to trucks or the ground by the use of trash chutes, lifts, buckets, etc. No debris will be allowed to be thrown from any roof.

c. Special Feedmill Considerations:

1. Contractor shall review with the COR, safety considerations with regard to hot work, feedmill operations access to roof, etc. Contractor shall strictly follow appropriate safety guidelines and OSHA regulations.

2. A fire watch is required for any hot work. Prior notification shall be given to the COR before beginning any such work.

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* End of Section

SECTION 0753

FLEXIBLE SHEET ROOFING SYSTEM

Buildings #1, #2:

1. General:

a. The extent of the flexible sheet roofing system is shown on the drawings.

b. Type of flexible sheet roofing system for Buildings #1 and #2 is a loose laid, ballasted .060” EPDM membrane system.

c. A portion of the roof of Bldg. #1 shall be a CSPE unballasted membrane as indicated on the drawings.

d. It is the intent to reuse the majority of the tapered insulation on Bldgs. #1 and #2. Contractor shall allow for a minimum of 10% of new tapered insulation for anticipated damage to existing tapered insulation.

e. A ½” layer of fiberboard shall be installed over all insulation on Buildings #1 and #2.

2. Quality Assurance:

a. Manufacturer: Obtain primary flexible sheet roofing materials from a single manufacturer. Provide secondary materials of such type and manufacturer and in such quantity as recommended by manufacturer of primary materials for the roofing system specified.

1. On-Site: Contractor shall cause and require manufacturer of flexible sheet roofing material to perform, in addition to specific functions specified and to functions prerequisite to the issuance of the specified special project warranty, all such on-site activities and/or inspections of the work as the manufacturer may deem advisable for quality assurance.

0753-1

2. Consultation: Contractor shall provide, to the manufacturer/guarantor of the flexible sheet roofing membrane system one copy of the contract documents insofar as they relate to or affect the roofing system. Contractor shall require manufacturer/guarantor to advise him in writing of any discrepancies, if any, between the requirements of the contract documents for the flexible sheet roofing system as compared to the manufacturer’s standards for the type of system specified, and shall obtain in writing from the manufacturer, either approval of such discrepancies or manufacturer’s directive regarding discrepancy resolution seen to be prerequisite to issuance of specified special project warranty. Submit one copy of all correspondence to the COR for review and obtain COR written acknowledgment before proceeding with the roofing work. Deviations in the finished work from the requirements of the contract documents are acceptable only to the extent that they have been so directed and acknowledged.

b. Installer: A firm with not less than 3 years of successful experience in installation of roofing systems similar to those required for this project and which is licensed or otherwise specifically authorized in writing by manufacturer of primary roofing materials.

1. Assign work closely associated with flexible sheet roofing, including (but not limited to) insulation, flashing and counterflashing, expansion joints, and related joint sealers, to installer of flexible sheet roofing.

c. Pre-Roofing Conference: Prior to installation of roofing and related work, Contractor shall conduct a pre-roofing conference, on the deck. Purpose of conference shall be to review all requirements of the work of this section, and the methods and means by which those requirements are to be met. Conference shall include the Contractor’s superintendent for the work, the FSR membrane manufacturer’s field technical representative (authorized by manufacturer to conduct warranty inspections), and the COR. Record discussions and agreements and furnish copy to each participant. Provide at least 72 hours advance notice to participants prior to convening pre-roofing conference. Do not conduct pre-roofing conference until shop drawings and bill of materials, approved by the FSR system manufacturer and acknowledged by the COR are available. Use these shop drawings (including bill of materials) as basis for conference.

1. Manufacturer’s warranty inspection: FSR manufacturer shall inspect the completed work before issuing the specified warranty. The same individuals present at the pre-roofing conference shall be present on the roof at the time of the warranty inspection; Contractor shall make the necessary arrangements.

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3. Submittals:

a. Product Data: Submit specifications, installation instructions, and general recommendations from manufacturers of flexible sheet roofing system materials, for types of roofing (including insulation) materials required. Include data substantiating that materials comply with requirements.

b. Shop Drawings: Submit three complete sets of shop drawings, approved (approval shall be dated) by manufacturer of FSR membrane system. Shop drawings shall include:

1. Outline of roofs

2. Roof Sizes

3. Location of all field seams

4. Location and type of all penetrations

5. All perimeter, penetration, and special details

6. The layout of all tapered insulation materials

7. The location of all fastening strips and anchors

8. Bill of materials

Shop drawings shall clearly identify, as such, each instance where the work represented by the shop drawings departs in any way from the work as shown/specified in the Contract Documents. Submit only shop drawings which have been approved by manufacturer.

c. Samples: Submit one of each of the following:

1. 12” square sample of each type of finished roofing sheet, including “T-shaped” side/end-lap seam.

2. 12” square sample of each type of roofing insulation to be used on the job.

3. Representative sample of all components to be used in the mechanical attachment of various parts of the roofing system to the deck.

d. Manufacturer’s Directives: Submit one copy of all correspondence relative to requirement for “consultation” specified under “Quality Assurance”.

e. Installer’s Credentials with Manufacturer: submit one copy of evidence of Roofing Membrane Manufacturer’s licensing, authorizing, or otherwise specifically accepting and approving, Installer for the performance of warranted wok of the kind specified herein.

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f. Conference Report: One copy of minutes of Pre-Roofing conference.

g. Warranty: Submit, upon completion and manufacturer’s acceptance of the roofing work, two copies of the specified special project warranty to the owner.

4. Job Conditions:

a. Following manufacturer’s recommendations before proceeding. Proceed with roofing work only when current and forecast weather conditions permit work to be performed in accordance with manufacturer’s recommendations and warranty requirements.

b. Under no circumstances shall work proceed or the existing roof system be removed if weather conditions are such that damage to the facility or its contents may occur contractor shall be responsible for keeping the building water tight during construction. Any damage to the facility or its contents shall be repaired and paid for by the contractor as a result of work performed under this contract.

5. Special Project Warranty:

a. Provide written “no leak, total roofing systems” warranty, covering all of the work of this section of the specifications. Warranty shall be signed by manufacturer of roofing membrane, and shall bind manufacturer to replacement/repair of any and all in a leak-free condition for the period of the warranty. Repairs and replacements required because of events beyond Contractor’s/Installer’s/Manufacturer’s control (and which exceed performance requirements) shall be completed by the Contractor, Installer and paid for by Government.

1. Warranty period for the ballasted and fully adhered EPDM membrane systems shall be 15 years after date of substantial completion for the leak guarantee including materials and installation. Warranty period for the CSPE membrane system shall be 15 years after date of substantial completion for the no leak guarantee including materials and installation.

6. Products:

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a. Compatibility: Provide products which are recommended by manufacturer to be fully compatible with indicated substrates, or provide separation materials as required to eliminate contact between incompatible materials.

b. Fire Rating: Insulation and attachment materials and method of installation for insulation over steel decks shall meet test requirements of Underwriters’ Laboratories, Inc., or Factory Mutual Laboratory. Tests may be made by any independent testing laboratory satisfactory to the testing service. Certificates shall be furnished, attesting that the assembly and method of test and the installation will not contribute significantly to fire occurring beneath the roof deck.

7. Loose Laid, Ballasted EPDM System (Buildings. #1,#2):

a. General: Loose laid, ballasted EPDM system, .060” membrane, shall be complete in all respects according to both the requirements of the contract drawings and specifications, and the specifications and details published by the manufacturer of the EPDM system. A procedure for resolving any discrepancies between the two sets of requirements has been provided; see “Consultation” under “Quality Assurance,” above. All material components of EPDM system shall be acceptable to the manufacturer of the EPDM membrane for incorporation into the system provided.

b. Provide one of the following EPDM Systems:

1. “Design ‘B’ loose laid, ballasted system” by Carlisle Corporation.

2. “Firestone Rubbergard Ballasted System” by Firestone Industrial Products Company.

3. “Gen-Flex ACR membrane roofing system, Ballasted EPDM, Standard Design” by Diversi Tech General, Building Systems Division.

4. “Manville SPM Roofing System, Specification No. SE48” by Manville Roofing Systems Division.

5. “Versigard Ballasted System” by the Goodyear Tire and Rubber Company.

c. Provide one of the following roofing membranes to match the system provided:

1. Sure-seal non-reinforced “Black” EPDM, .060 inches thick, by Carlisile.

0753-5

2. Rubbergard EPDM Roof Membrane, .060 inches thick, by Firestone.

3. Genflix membrane, black EPDM, .060 inches thick, by Diversi Tech General.

4. Manville SPM-60 (black) EPDM membrane.

5. Versigard standard membrane, .060 inches thick, black EPDM.

6. Roofing membrane sheet size: Provide membrane of sufficient size to cover each continuous rectangular section of roof with one piece of material without field seams or, if roof section size exceeds size of largest sheet produced by FSR system manufacturer, provide largest sheets produced.

7. Mechanically fastened unballasted CSPE Membrane System (Buildings #1, see drawings for location):

a. General: Mechanically fastened unballasted CSPE membrane system shall be complete in all respects according to both the requirements of the contract drawings and specification, and the specifications and details published by the manufacturer of the CSPE system. A procedure for resolving any discrepancies between the two sets of requirements has been provided; see “Consultation” under “Quality Assurance,“ above. All material components of CSPE system shall be acceptable to the manufacturer of the CSPE membrane for incorporation into the system provided.

b. Provide the following CSPE system or equal: Carlisle “HY-Choice .06 inches thick, reinforced CSPE membrane system. The system shall be unballasted.

8. Tapered Insulation System (Buildings #1,#2):

0753-6

a. General: Provide system of tapered insulation as required to build up surface drainage patterns indicated on the drawings. Slope shall be a minimum of 1/8” per foot. Provide molded type EPS, factory tapered units: Contour taper tile by Mid-America Industries, Associated Foam Manufacturers, Altar Tapered Polystyrene Roof System by Altar Industries or equivalent acceptable to FSR System Membrane Manufacturer. Verify acceptability of specified units to Membrane Manufacturer before ordering. Insulation shall have 1.5 lb/ft3 density and R value of 4.55/inch of thickness at 40 degree F, FM Class I and shall meet ASTM C 578 specifications. Provide barrier sheet or strips below membrane splices where recommended by Membrane Manufacturer.

b. Guarantee: Provide manufacturer’s 20 year guarantee against loss of thermal value in accordance with manufacturer’s published warranty.

9. Ballast:

a. General: Ballast material for the EPDM system shall be water worn gravel with rounded edges conforming to specifications for ballast material acceptable to the manufacturer of the FSR system membrane.

10. Walkway Protection:

a. General: Prefabricated concrete pavers containing no asphalt or coal-tar derivatives, suitable for use without cracking or breaking. Units shall be as specified on the drawings.

b. Provide wood walkways as shown on the drawings.

11. Miscellaneous Materials:

a. General: Provide all miscellaneous materials, of any description, needed to properly complete the watertight FSR system work according to manufacturer’s instructions. Miscellaneous materials may include, but are not limited to, vapor retarder, fasteners for insulation, slip sheet, protective mat, sheet seaming system, cant strips, flashing materials and accessories, elastic expansion joint systems, elastic sealants, and tapes.

1. Treated Wood Nailers shall be as specified on the drawings.

2. Roof flashing shall be as specified on the drawings.

12. Execution:

0753-7

a. Preparation of Substrate:

1. Comply with instructions of manufacturers involved for preparation of substrate to receive FSR systems.

2. Clean substrate of dust, debris, and other substances detrimental to FSR system work. Remove sharp projections.

3. Install nailers, cant strips, flashing, and accessory items as shown, and as recommended by manufacturer even though not shown.

4. Install treated wood members in accordance with industries standards. Pay particular attention to alignment of nailers supporting roof edge metal, so that edge metal may be installed true and tight to wall below.

5. Prevent compound from entering and clogging drains and conductors, and from spilling or migrating onto surfaces of other work.

13. Installation:

a. General: Install all FSR system materials in full accordance with the Membrane Manufacturer’s written specifications, installation instructions and published details, and shop drawings approved by the manufacturer and the COR. Do not begin installation work until after pre-roofing conference has been held. Unless installation instructions of FSR membrane manufacturer specifically contradicts the instructions for installation of rigid insulation published by the manufacturer of the insulation, install the rigid insulation (Area insulation system) in strict accordance with the written recommendations and instructions of the insulation manufacturer including recommendations for vapor retarder, fitting at joints, fastening of insulation, taping of joints, etc. In the event of conflicting instructions, install the insulation in accordance with the membrane manufacturer’s instructions in preference to those of the insulation manufacturer, but not until after obtaining specific written approval of such installation from the insulation manufacturer. If such approval cannot be obtained, switch brands of insulation to one which will satisfy, without exception, all the requirements of this specification. Contractor shall coordinate all work with the COR.

b. Care shall be taken to insure that the design live load limitations (30 psf) of the existing roof are not exceeded during construction.

c. Installation of Area Insulation System:

0753-8

1. Installation of ½” High Density Fiberboard Insulation (Bldgs. #1, #2):

a. Install high density fiberboard insulation in accordance with manufacturer’s recommendations. Insulation shall be placed on top of existing insulation.

2. Installation of isocyanurate insulation (Bldgs. #1, #2):

a. Install isocyanurate insulation according to manufacturer’s layout drawings in pattern yielding required slope to drains. Secure units of tapered insulation system to substrate (other units of system or underlying area insulation system) with adhesive compatible with all materials with which it comes in contact, and acceptable to the manufacturers of those materials.

d. Installation of FSR Membrane:

1. General: Start installation only in presence of manufacturer’s technical representative.

2. Loose-laid and ballasted EPDM: Install membrane by unrolling over prepared substrate, fastening at perimeter and at roofing penetrations. Lap adjoining sheets as recommended by covering top edges of each sheet at seams with uniform fillet of sealant if recommended by manufacturer. Install flashings and counter-flashings as shown and as recommended by manufacturer.

3. CSPE Unballasted System: This Hy roofing system shall incorporate a mechanically fastened scrim-reinforced white chlorosul fonated polyethylene (CSPE0 membrane. Roof insulation shall be mechanically fastened to the roof deck at a minimum rate of 1 fastener and plate every 8 square feet. Membrane sheets shall be installed using 76-1/2 inch wide Hy membrane and shall be fastened with a seam fastening plate located in the hot air welded seam. The fastening requirements shall be in accordance with the membrane manufactures instruction.

0753-9

e. Installation of Ballast: Existing ballast shall be reused. Install ballast, evenly spread over entire area of roof, according to instructions and specifications of FSR Membrane Manufacturer. Avoid temporary concentrations of which might overload roofing structure. Install at a rate of 10 lbs. per square foot. Spread with care to minimize probability of damage to membrane.

f. Installation of Paver Units:

1. Install walkway protection paver units at locations shown and where required for access to roof-mounted equipment. Place protection board carefully to avoid damage to membrane laying over an additional layer of roof membrane material, loosely applied. Contractor shall include 23000 S.F. of paver units for building #1-24 and #2-24. These paver units shall be installed near corners or other high wind areas as recommended by the FSR Membrane Manufacturer and approved by the COR. These paver units are in addition to units shown on the drawings for equipment access.

g. Installation of metal cap/flashing: Metal cap for perimeter walls shall be formed such that there is not more than a ¼” gap between cap and brick/nailers. A minimum 25 year caulk shall be used between brick and cap to ensure any such areas are weather and insect tight (see drawings).

14. Final Inspection:

a. Contractor shall repair or replace (as required) deteriorated or defective work found at time of final inspection.

15. Electrical Work:

a. All work shall be in compliance with the latest version of the NEC and shall be done by licensed electricians.

Feedmill:

1. General:

a. The extent of the flexible sheet roofing system is shown on the drawings.

b. Type of flexible sheet roofing system for the upper Feedmill roof is a fully adhered EPDM membrane system.

c. Insulation for the Feedmill roof shall be one layer of ¼” non-tapered

“DensDeck”.

0753-10

2. Quality Assurance (see “Quality Assurance” under Buildings #1, #2):

3. Submittals (see “Submittals” under Buildings #1, #2):

4. Job Conditions (see “Job Conditions” under Buildings #1, #2):

5. Special Project Warranty (see “Special Project Warranty” under Buildings #1, #2):

6. Products (see “Products” under Buildings #1, #2):

7. Walkway Protection:

a. General: Prefabricated concrete pavers containing no asphalt or coal-tar derivatives, suitable for use without cracking or breaking. Units shall be as specified on the drawings.

8. Miscellaneous Materials:

a. General: Provide all miscellaneous materials, of any description, needed to properly complete the watertight FSR system work according to manufacturer’s instructions. Miscellaneous materials may include, but are not limited to, vapor retarder, fasteners for insulation, slip sheet, protective mat, sheet seaming system, cant strips, flashing materials and accessories, elastic expansion joint systems, elastic sealants, and tapes.

1. Treated Wood Nailers shall be as specified on the drawings.

2. Roof flashing shall be as specified on the drawings.

9. Fully Adhered EPDM System (Feedmill):

a. General: Fully adhered system EPDM system shall be complete in all respects according to both the requirements of the contract drawings and specifications, and the specifications and details published by the manufacturer of the EPDM system. For any discrepancies between the two sets of requirements see “Consultation” under “Quality Assurance”, above. All material components of EPDM system shall be acceptable to the manufacturer of the EPDM membrane for incorporation into the system provided.

b. Provide one of the following fully adhered EPDM systems:

0753-11

1. “Sure Seal Fully Adhered Roofing System” by Carlisle Corporation.

2. “Firestone Rubbergard Fully Adhered System” by Firestone Industrial Products company/

3. “Manville SPD Roofing System:, Specification No SEGA” BY Manville Roofing Systems Division.

c. Provide one of the following roofing membranes for the fully adhered EPDM system:

1. Sure-seal reinforced “Black” EPDM, .090 inches thick, by Carlisle.

2. Rubbergard EPDM Roof Membrane/reinforced, .090 inches thick, by Firestone.

3. Manville SPM-90, black reinforced EPDM membrane.

4. Roofing Membrane Sheet Size: Provide membrane of sufficient size to cover each continuous rectangular section of roof with one piece of material without field seams or, if roof section size exceeds size of largest sheet produced by FSR system manufacturer, provide largest sheets produced.

10. Insulation System for Feedmill:

a. General: Provide insulation consisting of one ½” layer of high density fiberboard. It shall have a 1-90 windstorm classification, a Class 1 fire rating, and conform to a class A roof system classification. Provide barrier sheet or strips below membrane splices where recommended by Membrane Manufacturer.

b. Guarantee: Provide manufacturer’s 20 year guarantee against loss of thermal value in accordance with manufacturer’s published warranty.

11. Execution (see “Execution” under Buildings #1, #2):

12. Installation:

0753-12

a. General: Install all FSR system materials in full accordance with the Membrane Manufacturer’s written specifications, installation instructions and published details, and shop drawings approved by the manufacturer and the COR. Do not begin installation work until after pre-roofing conference has been held. Unless installation instructions of FSR membrane manufacturer specifically contradicts the instructions for installation of rigid insulation published by the manufacturer of the insulation, install the rigid insulation (Area insulation system) in strict accordance with the written recommendations and instructions of the insulation manufacturer including recommendations for vapor retarder, fitting at joints, fastening of insulation, taping of joints, etc. In the event of conflicting instructions, install the insulation in accordance with the membrane manufacturer’s instructions in preference to those of the insulation manufacturer, but not until after obtaining specific written approval of such installation from the insulation manufacturer. If such approval cannot be obtained, switch brands of insulation to one which will satisfy, without exception, all the requirements of this specification. Contractor shall coordinate all work with the COR.

b. Care shall be taken to insure that the design live load limitations (30 psf) of the existing roof are not exceeded during construction.

c. Installation of Area Insulation System:

1. Installation of DensDeck:

a. Install DensDeck per manufacturer’s recommendations.

d. Installation of FSR Membrane:

1. General: Start installation only in presence of manufacturer’s technical representative.

2. Fully Adhered EPDM: Install membrane by unrolling over prepared substrate, fastening at perimeter and at roofing penetrations. Lap adjoining sheets as recommended by EPDM manufacturer and bond as recommended by manufacturer, covering top edges of each sheet as seams with uniform fillet of sealant if recommended by manufacturer. “Strip in” all seams.

Install flashings and counterflashings as shown and as recommended by manufacturer.

e. Installation of Paver Units:

0753-13

1. Install approximately 200 square feet of walkway protection paver units at locations to be determined by COR. Place protection boards carefully to avoid damage to membrane by laying over an additional layer of roof membrane material, loosely applied, for additional protection.

13. Final Inspection:

a. Contractor shall repair or replace (as required) deteriorated or defective work found at time of final inspection.

16. Electrical Work:

a. All work shall be in compliance with the latest version of the NEC and shall be done by licensed electricians.

0753-14

* End of Section

SECTION 0790

JOINT SEALERS

1. General:

a. This section includes joint sealers for exterior roof flashing, perimeter metal caps, and other surfaces as indicated or as stated.

b. Provide joint sealers that have been produced and installed to establish and maintain watertight and airtight continuous seals.

2. Submittals:

a. Product data from manufacturers for each joint sealer product required, including instructions for joint preparation and joint sealer application.

b. Certificates from manufacturers of joint sealers attesting that their products comply with specification requirements and are suitable for the use indicated.

c. Pre-construction field test reports indicating which products and joint preparation methods demonstrated acceptable adhesion to joint substrates.

3. Quality Assurance:

a. Installer Qualifications: Engage an installer who has successfully completed within the last 3 years at least 3 joint sealer applications similar in type and size to that of this project.

b. Obtain joint sealer materials from a single manufacturer for each different product required.

4. Delivery, Storage, & Handling:

a. Deliver materials to project site in original unopened containers or bundles with labels informing about manufacturer, product name and designation, color, expiration period for use, pot life, curing time and mixing instructions for multi-component materials.

b. Store and handle materials in compliance with manufacturers’ recommendations to prevent their deterioration or damage due to moisture, high or low temperature, contaminants, or other causes.

5. Project Conditions:

0790-1

a. Do not proceed with installation of joint sealers under the following conditions:

1. When ambient and substrate temperature conditions are outside the limits permitted by joint sealer manufacturer or below 40 degrees F (4.4 deg C).

2. When joint substrates are wet due to rain, frost, condensation, or other causes.

b. Do not proceed with installation of joint sealers where joint widths are less than allowed by joint sealer manufacturer for application indicated.

c. Do not proceed with installation of joint sealers until contaminants capable of interfering with their adhesion are removed from joint substrates.

6. Products:

Provide joint sealers, joint fillers and other related materials that are compatible with one another and with joint substrates under conditions of service and application, as demonstrated by sealant manufacturer based on testing and field experience. Provide color of exposed joint sealers indicated or, if not otherwise indicated, as selected by Contracting Officer from manufacturer’s standard colors.

a. Sealants:

1. Interior Sealant: ASTM C 834 Type S or M, Grade NS, Class 12.5, use NT. Where exposed, sealant color shall match color of adjacent surface.

2. Exterior Sealant: For joints in vertical surfaces, provide ASTM C 920, Type S or M, Grade NS, Class 25, use NT. For joints in horizontal surfaces, provide ASTM C 920, Type S or M, Grade P, Class 25, use T. Where exposed, sealant color shall match color of adjacent surfaces.

a. Available Manufacturers: Manufacturers and products which may be incorporated in the work include, but are not limited to the following:

1. “Dow Corning 790”; Dow Corning Corp.

2. “Omniseal”; Sonneborn Building Products Div., Rexnord Chem.

Prod. Inc.

3. “Spectrum 1”; Tremco, Inc.

Joint Sealant Backing:

0790-2

1. Provide sealant backings of material and type which are non-staining; are compatible with joint substrates, sealants, primers and other joint fillers; and are approved for applications indicated by sealant manufacturer based on field experience and laboratory testing.

2. Plastic Foam Joint Fillers: Preformed, compressible, resilient, nonwaxing, nonextruding strips of flexible, nongassing plastic foam of material indicated below; nonabsorbent to water and gas; and of size, shape and density to control sealant depth and otherwise contribute to producing optimum sealant performance.

a. Either open-cell polyurethane foam or closed-cell polyethylene foam, unless otherwise indicated, subject to approval of sealant manufacturer, for cold-applied sealants only.

3. Bond-Breaker Tape: Polyethylene tape or other plastic tape as 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 applicable.

d. Miscellaneous Materials:

1. Primers: Provide type of primer recommended by joint sealer manufacturer where required for adhesion of sealant to joint substrates indicated, as determined from pre-construction joint sealer-substrate tests and field test.

2. Cleaners: Provide non-staining, chemical cleaners of type which are acceptable to manufacturers of sealants and sealant backing materials, which are not harmful to substrates and adjacent nonporous materials, and which do not leave oily residues or otherwise have a detrimental effect on sealant adhesion or in-service performance.

3. Masking Tape: Provide non-staining, nonabsorbent type masking tape compatible with joint sealants and surfaces adjacent to joints.

7. Execution:

Examine joints indicated to receive joint sealers, with installer present for compliance with requirements for joint configuration, installation, tolerances and other conditions affecting joint sealer performance. Do not proceed with installation of joint sealers until unsatisfactory conditions have been corrected.

a. Preparation:

0790-3

1. Clean out joints immediately before installing joint sealers to comply with recommendations of joint sealer manufacturers and the following requirements. This shall include removal of all old sealant.

a. Remove all foreign material from joint substrates which could interfere with application of proper quantity and adhesion of joint sealer, including dust, paints, old joint sealers, oil, grease, waterproofing, water repellent, water, surface dirt, and frost. It is not necessary to remove permanent, protective coatings tested and approved for sealant adhesion and compatibility by sealant manufacturer.

b. Clean concrete, masonry, unglazed surfaces of ceramic tile and similar porous joint substrate surfaces, by brushing, grinding, blast cleaning, mechanical abrading, or a combination of these methods to produce a clean, sound substrate capable of developing optimum bond with joint sealers. Remove loose particles remaining from above cleaning operations by vacuuming or blowing out joints with oil-free compressed air.

c. Remove laitance and release agents from concrete.

d. Clean metal, glass, porcelain enamel, glazed surfaces of ceramic tile; and other nonporous surfaces of ceramic tile; and other nonporous surfaces by chemical cleaners of other means which are not harmful to substrates or leave residues capable of interfering with adhesion of joint sealers.

2. Prime joint substrates where indicated or where recommended by joint sealer manufacturer based on preconstruction joint sealer-substrate tests or prior experience. Apply primer to comply with joint sealer manufacturer’s recommendations. Confine primers to areas of joint sealer bond. Do not allow spillage or migration onto adjoining surfaces.

3. Use masking tape where required to prevent contact of sealant with adjoining surfaces which otherwise would be permanently stained or damaged by such contact or by cleaning methods required to remove sealant smears. Remove tape immediately after tooling without disturbing joint seal.

b. Installation of Joint Sealers:

1. Comply with joint sealer manufacturer’s printed installation instructions applicable to products and applications indicated, except where more stringent requirements apply.

0790-4

2. Elastomeric Sealant Installation Standard shall comply with recommendations of ASTM C 962, for use of joint sealants as applicable to materials, applications and conditions indicated.

3. Installation of Sealant Backings: Install sealant backings to comply with the following requirements:

a. Install joint fillers of type indicated to provide support of sealants during application and a position required to produce the cross-sectional shapes and depths of installed sealants relative to joint widths which allow optimum sealant movement capability.

b. Do not leave gaps between ends of joint fillers.

c. Do not stretch, twist, puncture, or tear joint fillers.

d. Remove absorbent joint fillers which have become wet prior to sealant application and replace with dry material.

4. Install bond breaker tape between sealants and joint fillers, compression seals, or back of joints where adhesion of sealant to surfaces at back of joints would result in sealant failure.

5. Install sealants by proven techniques that result in sealants directly contacting and fully wetting joint substrates, completely filling recesses provided for each joint configuration, and providing uniform, cross-sectional shapes and depths relative to joint widths which allow optimum sealant movement capability.

6. Immediately after sealant application and prior to time skinning or curing begins, tool sealants to form smooth, uniform beads of configuration indicated, to eliminate air pockets, and to ensure contact and adhesion of sealant with sedes of joint. Remove excess sealants from surfaces adjacent to joint. Do not use tooling agents which discolor sealants or adjacent surfaces or are not approved by sealant manufacturer.

a. Provide concave joint configuration per Figure 6A in ASTM C 962, unless otherwise indicated.

c. Cleaning:

0790-5

1. Clean off excess sealants or sealant smears adjacent to joints as work progresses by methods and with cleaning material approved by manufacturers of joint sealers and of products in which joints occur. On masonry and other porous surfaces, immediately scrape off fresh sealant that has been smeared on masonry and rub clean with solvent as recommended by the sealant manufacturer.

d. Protection:

1. Protect joint sealers during and after curing period from contact with contaminating substances or from damage resulting from construction operations or other causes so that they are without deterioration or damage at time of substantial completion. If, despite such protection, damage or deterioration occurs, cut out and remove damaged or deteriorated joint sealers immediately and reseal joints with new materials to produce joint sealer installations with repaired areas indistinguishable from original work.

0790-6

* End of Section

SECTION 0990

PAINTING

1. General:

a. The extent of required painting shall include fume hood rooftop exhaust units as well as other exhausters and equipment as shown on the drawings.

b. No exterior painting shall be performed when the wind is from a direction that will carry dust onto the painted surfaces. Scheduling of painting shall be coordinated with COR and the final decisions shall rest upon the COR for allowing painting on windy days

2. Products:

a. Prime Coat: Sherwin-Williams, “Galvite”, #B50W3, or equal

b. Top Coat: Sherwin-Williams, Industrial Enamel, B54 Series, or equal.

3. Execution:

a. Cleaning, Preparation, and Pretreatment:

1. Surfaces to be painted shall be clean and free from loose particles before applying the paint. Oil, Grease and other contaminants harmful to paint adhesion shall be removed with clean cloth and appropriate cleaning solvent followed by rinsing with clear water.

2. Metal: Unfinished surfaces that have not been shop coated shall be solvent cleaned to remove oil and grease and wire brush cleaned to remove rust or other foreign substances. Unfinished and prime coated metal shall be prepared and primed before painting.

4, Paint Application:

0990-1

a. General: Paint shall be applied by skilled painters, by roller or brush, following manufacturer’s printed instructions and using appropriate methods of application. Adjacent work and materials shall be protected by ample drop cloths or other suitable coverings. The meeting line between colors shall be straight and sharply defined, with no blending, running or gaps. All coats of paint shall be applied uniformly and be free from sags, wrinkles, runs, holiday, smears, dirt and not defaced by spattered paint. Paint drops and overspray shall be removed before dry. The hiding shall be complete and each coat shall be so applied as to produce a film of uniform thickness. Special attention shall be given to insure that edges, corners, and crevices receive a film thickness equivalent to that of adjacent painted surfaces.

b. Paint properties, storage, mixing, and thinning: At time of application , paint shall show not signs of deterioration. Paints of different manufacturers or different types shall not be mixed together. Where necessary to suit conditions of surface, and method of application, the packaged paint may be thinned in accordance with the manufacturer’s directions. The use of thinning for any reason shall not relieve the Contractor from obtaining complete hiding of preceding coat or substrates.

c. Atmosphere and ambient conditions: While painting is begin done, the temperature of the surface to be painted and of the atmosphere in contact with the surfaces shall be at a minimum of 45 degrees F and a maximum of 95 degrees F. Surfaces to be painted shall be protected from dirt and dust during painting and finishing. Do not apply paint in snow, rain, fog or mist, or when relative humidity exceeds 85%, or to damp or wet surfaces, unless otherwise permitted by paint manufacturer’s printed instructions

d. Time scheduling of painting: Surfaces that have been cleaned, pretreated, or otherwise prepared for painting shall be given a coat of the specified material as soon as practicable after such preparation has been completed but any event prior to any deterioration of the prepared surfaces. Sufficient time shall elapse between successive coatings to permit proper drying. This period shall be increased as necessary to suit adverse weather conditions. Paint shall be considered dry for recoating when it feels form, does not deform or feel sticky under moderate pressure of the thumb and the application of another coat of paint does not cause lifting or loss of adhesion of the undercoat.

e. Clean-up: Upon completion of painting, remove all paint spots from floors, glass and other surfaces, all rubbish, discarded materials, surplus materials, caused by this work and leave the area clean and orderly.

0990-2

* End of Section