36C25619R0117-0001007.pdf

Building B-109 Lab Renovation 2nd Floor

Project No. 580-18-105 MEDVAMC

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SECTION 07 52 16.11

COLD ADHESIVE STYRENE-BUTADIENE-STYRENE MODIFIED BITUMINOUS MEMBRANE ROOFING

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Repairs and alteration work, including temporary roofs.

1.2 RELATED REQUIREMENTS

A. Non-Flooring Adhesives and Sealants VOC Limits: Section 01 81 13, SUSTAINABLE CONSTRUCTION REQUIREMENTS.

B. Preparation of Existing Membrane Roofs and Repair Areas: Section

07 01 50.19, PREPARATION FOR REROOFING.

C. Sheet Metal Components: Section 07 60 00, FLASHING AND SHEET METAL.

1.3 APPLICABLE PUBLICATIONS

A. Comply with references to extent specified in this section.

B. American National Standards Institute/Single-Ply Roofing Institute

(ANSI/SPRI):

1. FX-1-01(R2006) - Standard Field Test Procedure for Determining the

Withdrawal Resistance of Roofing Fasteners.

C. American Society of Civil Engineers/Structural Engineering Institute

(ASCE/SEI):

1. 7-10 - Minimum Design Loads for Buildings and Other Structures.

D. American Society of Heating, Refrigerating and Air-Conditioning

Engineers, Inc. (ASHRAE):

1. 90.1-13 - Energy Standard for Buildings Except Low-Rise Residential

Buildings.

E. ASTM International (ASTM):

1. C1370-00(R2012) - Determining Chemical Resistance of Aggregates for

Use in Chemical-Resistant Sulfur Polymer Cement Concrete and Other

Chemical-Resistant Polymer Concretes.

2. C1371-15 - Determination of Emittance of Materials Near Room

Temperature Using Portable Emissometers.

3. C1549-09(2014) - Determination of Solar Reflectance Near Ambient

Temperature Using a Portable Solar Reflectometer.

4. D146/D146M-04 (2012)e1 - Sampling and Testing Bitumen-Saturated

Felts and Woven Fabrics for Roofing and Waterproofing.

5. D1644-01(2012) - Nonvolatile Content of Varnishes.

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6. D2523-13 - Testing Load-Strain Properties of Roofing Membranes.

7. D4073-06(2013) - Tensile-Tear Strength of Bituminous Roofing

Membranes.

8. D4263-83(2012) - Indicating Moisture in Concrete by the Plastic

Sheet Method.

9. D4586/D4586M-07(2012)e1 - Asphalt Roof Cement, Asbestos Free.

10. D4601/D4601M-04(2012)e1 - Asphalt-Coated Glass Fiber Base Sheet Used in Roofing.

11. D4897/D4897M-01(2009) - Asphalt Coated Glass Fiber Venting Base

Sheet Used in Roofing.

12. D5147/D5147M-14 - Sampling and Testing Modified Bituminous Sheet

Material.

13. D5201-05a(2014) - Calculating Formulation Physical Constants of

Paints and Coatings.

14. D6162/D6162M-00(2015)e1 - Styrene Butadiene Styrene (SBS) Modified

Bituminous Sheet Materials Using a Combination of Polyester and

Glass Fiber Reinforcements.

15. D6163/D6163M-00(2015)e1 - Styrene Butadiene Styrene (SBS) Modified

Bituminous Sheet Materials Using Glass Fiber Reinforcements.

16. D6164/D6164M-11 - Styrene Butadiene Styrene (SBS) Modified

Bituminous Sheet Materials Using Polyester Reinforcements.

17. D6511/D6511M-06(2011)e1 - Solvent Bearing Bituminous Compounds.

18. E108-11 - Fire Tests of Roof Coverings.

19. E408-13 - Total Normal Emittance of Surfaces Using Inspection-Meter

Techniques.

20. E1918-06(2015) - Measuring Solar Reflectance of Horizontal and

Low-Sloped Surfaces in the Field.

21. E1980-11 - Calculating Solar Reflectance of Horizontal and

Low-Sloped Opaque Surfaces.

F. Cool Roof Rating Council (CRRC):

1. 1-15 - Product Rating Program.

G. National Roofing Contractors Association (NRCA):

1. Manual-15 - The NRCA Roofing Manual: Membrane Roof Systems.

H. U.S. Department of Agriculture (USDA):

1. BioPreferred® Program Catalog.

I. UL LLC (UL):

1. 580-06 - Tests for Uplift Resistance of Roof Assemblies.

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2. 1897-15 - Uplift Tests for Roof Covering Systems.

J. U.S. Department of Commerce National Institute of Standards and

Technology (NIST):

1. DOC PS 1-09 - Structural Plywood.

2. DOC PS 2-04 - Performance Standard for Wood-Based Structural-Use

Panels.

K. U.S. Environmental Protection Agency (EPA):

1. EPA 600/R-93/116-93 - Method for the Determination of Asbestos in

Bulk Building Materials.

1.4 PREINSTALLATION MEETINGS

A. Conduct preinstallation meeting at project site minimum 30 days before beginning Work of this section.

1. Required Participants:

a. Contractor.

b. Installer.

c. Manufacturer's field representative.

2. Meeting Agenda: Distribute agenda to participants minimum 3 days before meeting.

a. Installation schedule.

b. Installation sequence.

c. Preparatory work.

d. Protection before, during, and after installation.

e. Installation.

f. Terminations.

g. Transitions and connections to other work.

h. Inspecting and testing.

i. Other items affecting successful completion.

3. Document and distribute meeting minutes to participants to record decisions affecting installation.

1.5 SUBMITTALS

A. Submittal Procedures: Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

B. Submittal Drawings:

1. Roofing membrane seaming and joint details.

2. Roof membrane penetration details.

3. Base flashing and termination details.

C. Manufacturer's Literature and Data:

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1. Description of each product.

2. Minimum fastener pullout resistance.

3. Installation instructions.

4. Warranty.

D. Samples:

1. Roofing Membrane: 150 mm (6 inch) square.

2. Base Flashing: 150 mm (6 inch) square.

3. Fasteners: Each type.

4. Roofing Membrane Seam: 300 mm (12 inches) square.

E. Sustainable Construction Submittals:

1. Solar Reflectance Index (SRI) for roofing membrane.

2. Biobased Content:

a. Show type and quantity for each product.

3. Low Pollutant-Emitting Materials:

a. Show volatile organic compound types and quantities.

4. Energy Star label for roofing membrane.

F. Certificates: Certify products comply with specifications.

1. Fire and windstorm classification.

2. High wind zone design requirements.

3. Energy performance requirements.

G. Qualifications: Substantiate qualifications comply with specifications.

1. Installer, including supervisors with project experience list.

2. Manufacturer's field representative with project experience list.

H. Field quality control reports.

I. Operation and Maintenance Data:

1. Maintenance instructions.

1.6 QUALITY ASSURANCE

A. Installer Qualifications:

1. Approved by roofing system manufacturer as installer for roofing system with specified warranty.

2. Regularly installs specified products.

3. Installed specified products with satisfactory service on five similar installations for minimum five years.

a. Project Experience List: Provide contact names and addresses for completed projects.

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4. Employs full-time supervisors experienced installing specified system and able to communicate with Contracting Officer's

Representative and installer's personnel.

B. Manufacturer's Field Representative:

1. Manufacturer's full-time technical employee or independent roofing inspector.

2. Individual certified by Roof Consultants Institute as Registered

Roof Observer.

1.7 DELIVERY

A. Deliver products in manufacturer's original sealed packaging.

B. Mark packaging, legibly. Indicate manufacturer's name or brand, type, and manufacture date.

C. Before installation, return or dispose of products within distorted, damaged, or opened packaging.

1.8 STORAGE AND HANDLING

A. Comply with NRCA Manual storage and handling requirements.

B. Store products indoors in dry, weathertight facility.

C. Store adhesives according to manufacturer's instructions.

D. Protect products from damage during handling and construction operations.

E. Products stored on the roof deck must not cause permanent deck deflection.

1.9 FIELD CONDITIONS

A. Environment:

1. Product Temperature: Minimum 4 degrees C (40 degrees F) for minimum

48 hours before installation.

2. Weather Limitations: Install roofing only during dry current and forecasted weather conditions.

1.10 WARRANTY

A. Construction Warranty: FAR clause 52.246-21, "Warranty of

Construction."

B. Manufacturer's Warranty: Warrant roofing system against material and manufacturing defects and agree to repair any leak caused by a defect in the roofing system materials or workmanship of the installer.

1. Warranty Period: 10 years.

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2. All work shall not impact existing roof warranty. Existing roof is under warranty from Tremco.

PART 2 - PRODUCTS

2.1 SYSTEM DESCRIPTION

A. Roofing System: Modified bituminous sheet roofing and base flashing installed using cold-applied adhesive on existing roofing.

2.2 SYSTEM PERFORMANCE

A. Design roofing system meeting specified performance:

1. Load Resistance: ASCE/SEI 7; Design criteria as indicated on

Drawings.

a. Uplift Pressures:N/A

B. Roofing Membrane System Load-Strain Properties: Match existing roofing system

2.3 PRODUCTS - GENERAL

A. Provide roof system components from one manufacturer.

B. Sustainable Construction Requirements:

1. Biobased Content: Where applicable, provide products designated by

USDA and meeting or exceeding USDA recommendations for bio-based content, and products meeting Rapidly Renewable Materials and certified sustainable wood content definitions; refer to www.biopreferred.gov.

2. Low Pollutant-Emitting Materials: Comply with VOC limits specified in Section 01 81 13, SUSTAINABLE CONSTRUCTION REQUIREMENTS for the following products:

a. Non-flooring adhesives and sealants.

2.4 MEMBRANE AND SHEET MATERIALS

A. Membrane Materials, General: Provide combination of base, ply, and cap sheet materials that have been tested in combination and comply with specified load/strain performance.

B. Base Sheet: ASTM D4897/D4897M, Type II, venting, nonperforated and as approved by modified bitumen roof membrane manufacturer.

1. Breaking Strength, minimum, ASTM D146/D146M: cross machine direction, 21.0 kN/m (120 lbf/in).

2. Tear Strength, minimum, ASTM D4073: cross machine direction, 880 N

(200 lbf.).

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3. Pliability, 12.7 mm (1/2 inch) radius bend, ASTM D146/D146M: No failures.

C. Membrane Ply Sheet: ASTM D6163/D6163M, Grade S, Type II or III, glass-fiber-reinforced, SBS/SEBS-modified asphalt sheet, or

ASTM D6162/D6162M, Grade S, Type II or III, SBS/SEBS-modified asphalt sheet; smooth surfaced; with the following minimum properties:

1. Tensile Strength at 23 degrees C (73 degrees F), minimum, cross machine direction, ASTM D5147/D5147M: 21 kN/m (120 lbf/in).

2. Tear Strength at 23 degrees C (73 degrees F), minimum, cross machine direction, ASTM D5147/D5147M: 890 N (200 lbf.).

3. Elongation at 23 degrees C (73 degrees F), minimum, cross machine direction, at 5 percent maximum load ASTM D5147/D5147M: 40 percent.

D. Membrane Cap Sheet: ASTM D6163/D6163M, Grade G, Type II, glass-fiber-reinforced, SBS/SEBS/SIS modified asphalt sheet; granular surfaced; and as follows:

1. Exterior Fire-Test Exposure, ASTM E108: Class A.

2. Tensile Strength at 23 degrees C (73 degrees F), minimum, cross machine direction, ASTM D5147/D5147M: 24 kN/m (140 lbf/in).

3. Tear Strength at 23 degrees C (73 degrees F), minimum, cross machine direction, ASTM D5147/D5147M: 880 N (200 lbf.).

4. Elongation at 23 degrees C (73 degrees F), minimum, cross machine direction, at 5 percent maximum load ASTM D5147/D5147M: 40 percent.

5. Low Temperature Flex, maximum, ASTM D5147/D5147M: -31 degrees C

(-25 degrees F).

E. Base Flashing Backer Sheet: ASTM D4601/D4601M, Type II.

F. Base Flashing Sheet: ASTM D6164/D6164M, Grade G, Type II, polyester-reinforced, SBS-modified asphalt sheet; with granular surface; Granule Color: White.

2.5 ADHESIVE AND ASPHALT MATERIALS

A. General: Adhesive and sealant materials recommended by roofing system manufacturer for intended use, identical to materials utilized in approved listed roofing system, and compatible with roofing membrane.

B. Water-Based Asphalt Primer: Water-based, polymer modified, asphalt primer with the following physical properties:

1. Asbestos Content, EPA 600/R-93/116: None.

C. Cold-Applied Adhesive for Sheet Membrane: One-part, asbestos-free, low-volatile organic compound, cold-applied adhesive compatible with

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07 52 16.11 - 8 specified roofing membranes and flashings, with the following physical properties:

1. Asbestos Content, EPA 600 R-93/116: None.

2. Nonvolatile Content, minimum, ASTM D6511/D6511M: 75 percent.

3. Uniformity and Consistency, ASTM D6511/D6511M: Pass.

D. Cold-Applied Adhesive for Membrane Flashing: One-part, cold-applied adhesive compatible with specified roofing membranes and flashings, with the following physical properties:

1. Asbestos Content, EPA 600 R-93/116: None.

2. Nonvolatile Content, minimum, ASTM D6511/D6511M: 75 percent.

3. Uniformity and Consistency, ASTM D6511/D6511M: Pass.

E. Roof Cement: ASTM D4586/D4586M, Type II.

2.6 FASTENERS

A. Roofing Fasteners: Coated, corrosion-resistant steel fasteners and metal or plastic plates, where applicable, tested by fastener manufacturer for required uplift resistance, and recommended by roofing manufacturer for application.

B. Accessory Fasteners: Corrosion-resistant fasteners compatible with adjacent materials and recommended for application by manufacturer of component to be fastened.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine and verify substrates for product installation with roofing

Installer and roofing inspector present.

1. Verify roof penetrations are complete, secured against movement, and firestopped .

2. Verify roof deck is adequately secured to resist wind uplift.

3. Verify roof deck is clean, dry, and in-plane ready to receive roofing system.

B. Correct unsatisfactory conditions before beginning roofing work.

3.2 PREPARATION

A. Complete roof deck construction before commencing roofing work:

1. Curbs, blocking, edge strips, nailers, cants, and other components to which roofing and base flashing is attached, in place ready to receive insulation and roofing.

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2. Coordinate roofing membrane installation with flashing work and roof insulation work so insulation and flashing are installed concurrently to permit continuous roofing operations.

3. Complete installation of flashing, insulation, and roofing in same day except for the area where temporary protection is required when work is stopped for inclement weather or end of work day.

B. Dry out surfaces that become wet from any cause during progress of the work before roofing work is resumed. Apply materials to dry substrates, only.

C. Broom clean roof decks. Remove dust, dirt and debris.

D. Remove projections capable of damaging roofing materials.

E. Concrete Decks, except Insulating Concrete:

1. Test concrete decks for moisture according to ASTM D4263 before installing roofing materials.

2. Prime concrete decks, including precast units, with primer as specified. Keep primer back 100 mm (4 inches) from precast concrete deck joints.

3. Allow primer to dry before application of bitumen.

F. Insulating Concrete Decks:

1. If rain occurs during or at end of drying period or during installation of roofing, allow additional drying time before the placement of the roofing materials.

G. Existing Membrane Roofs and Repair Areas:

1. Comply with requirements in Section 07 01 50.19 PREPARATION FOR

REROOFING.

3.3 TEMPORARY PROTECTION

A. Install temporary protection consisting of a temporary seal and water cut-offs at the end of each day's work and when work is halted for an indefinite period or work is stopped when precipitation is imminent.

B. Install temporary cap flashing over top of base flashings where permanent flashings are not in place to protect against water intrusion into roofing system. Securely anchor in place to prevent blow off and damage by construction activities.

C. Temporarily seal exposed insulation surfaces within roofing membrane.

1. Apply temporary seal and water cut off by extending roofing membrane beyond insulation and securely embedding edge of the roofing membrane in 6 mm (1/4 inch) thick by 50 mm (2 inches) wide strip of

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07 52 16.11 - 10 temporary closure sealant. Weight roofing membrane edge with sandbags, to prevent displacement; space sandbags maximum 2400 mm

(8 feet) on center.

2. Direct water away from work. Provide drainage, preventing water accumulation.

3. Check daily to ensure temporary seal remains watertight. Reseal open areas and weight down.

D. Before the work resumes, cut off and discard portions of roof membrane in contact with temporary seal.

1. Cut minimum 150 mm (6 inches) back from sealed edges and surfaces.

E. Remove sandbags and store for reuse.

3.4 INSTALLATION - GENERAL

A. Install products according to manufacturer's instructions and approved submittal drawings.

1. When manufacturer's instructions deviate from specifications, submit proposed resolution for Contracting Officer's Representative consideration.

B. Comply with NRCA Manual installation instructions.

C. Comply with UL 580 for uplift resistance.

3.5 INSTALLATION OF MODIFIED BITUMEN MEMBRANE

A. Primer: Apply primer to substrates where recommended by roofing manufacturer, in application quantities recommended by roofing manufacturer.

B. Cold-Applied Adhesive: Apply cold-applied adhesive in application quantities recommended by roofing manufacturer at substrate, between membrane sheets, and as glaze coat where required.

C. Membrane Sheets:

1. Number of Plies: Two, minimum, including base sheet and cap sheet, and additional plies as required to meet load/strain properties specified in Part 2 of this Section.

2. Begin laying sheets at the low points.

3. Roll sheets into cold-applied adhesive brushing down to firmly embed, free of wrinkles, fishmouths, blisters, bubbles, voids, air pockets or other defects that prevent complete adhesion.

4. Cut to fit closely around pipes, roof drains, bitumen stops, and similar roof projections.

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5. Lap sheets shingle fashion starting with starter strips at right angles to slope of roof.

6. Laps for Top Sheet and Base Sheet:

a. Base sheet, lapped 75 mm (3 inches).

b. Install 450 mm (18 inch) starting widths, lap top sheet 475 mm

(19 inches).

c. Lap end joints of sheet 150 mm (6 inches). Stagger end joints in relation to end joints in adjacent and proceeding plies.

3.6 BASE FLASHING

A. Provide built-up base flashing over cants and as necessary to make work watertight.

B. Prime vertical surfaces of masonry and concrete with asphalt primer except where vented base sheet is required to provide edge venting.

C. Apply flashing on top of roofing, up face of cant and up the face of the vertical surface, at least 200 mm (8 inches) above the roofing but maximum 350 mm (14 inches) above the roofing, generally full height beneath counter flashing or top of curb flashing.

1. At fascia-cants, extend to top of cant and cut off at top of cant.

2. At reglet, extend full depth into the reglet.

3. Where venting base sheet is used with insulating concrete, do not seal edges of venting base sheet with bitumen; allow for venting.

D. Apply two plies of modified bituminous sheet.

1. Extend the first ply 100 mm (4 inches) out on the roofing, and the second ply 75 mm (3 inches) beyond the first ply. Lap ends 75 mm

(3 inches) with joints broken 450 mm (18 inches) in each ply. Use smooth surface modified bituminous sheet for first ply.

2. Use granular surfaced modified bitumen cap sheet.

E. Set base flashing in a solid application of cold-applied adhesive.

1. Set cap sheet in cold-applied adhesive with laps sealed with cold-applied adhesive.

2. Except for venting roof edges, seal the top edge of the base flashing with roof cement.

F. Except at metal fascia cants, secure top edge of base flashing with nails on a line approximately 25 mm (1 inch) below top edge, spaced maximum 200 mm (8 inches) on center.

1. Cover nail heads with roof cement.

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2. Cover the top of the base flashing with counterflashing as specified in Section 07 60 00, FLASHING AND SHEET METAL. At the fascia cants secure the top edge of the flashing with fascia compression clamp as specified in Section 07 60 00, FLASHING AND SHEET METAL.

3.7 APPLICATION OF COATING

A. Apply coating on cap sheet when required to meet solar reflectance performance requirements.

B. Apply coating to membrane and base flashings according to manufacturer's instructions by spray or roller.

C. Provide dry film thickness of minimum 0.5 mm (20 mils).

3.8 STRIPPING

A. Coordinate to set flanges of metal flashing in roof cement on top sheet of the modified bituminous roofing and mailing to blocking with Section

07 60 00, FLASHING AND SHEET METAL.

B. Cover that portion of the horizontal flanges of metal base flashings, gravel stops, and other flanges extending out onto the roofing with modified bituminous sheet.

C. Extend the sheet out on the roofing 150 mm (6 inches) beyond the edge of the metal flange. Cut edge to fit tight against vertical members of flange.

D. Prime flange before stripping, embed sheet in cold-applied adhesive.

3.9 FIELD QUALITY CONTROL

A. Field Inspections:

1. Examine and probe roofing membrane and flashing seams in presence of

Contracting Officer's Representative and Manufacturer's field representative.

2. Probe seams to detect marginal bonds, voids, skips, and fishmouths.

3. Cut 100 mm (4 inch) wide by 300 mm (12 inch) long samples through seams where directed by Contracting Officer's Representative.

4. Cut one sample for every 450 m (1500 feet) of seams.

5. Cut samples perpendicular to seams.

6. Failure of samples to pass ASTM D1876 test will be cause for rejection of work.

7. Repair areas where samples are taken and where marginal bond, voids, and skips occur.

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8. Repair fishmouths and wrinkles by cutting to lay flat. Install patch over cut area extending 100 mm (4 inches) beyond cut.

B. Manufacturer Services:

1. Inspect initial installation, installation in progress, and completed work.

2. Issue supplemental installation instructions necessitated by field conditions.

3. Prepare and submit inspection reports.

4. Certify completed installation complies with manufacturer's instructions and warranty requirements.

3.10 CLEANING

A. Remove excess adhesive before adhesive sets.

B. Clean exposed roofing surfaces. Remove contaminants and stains // to comply with specified solar reflectance performance //.

3.11 PROTECTION

A. Protect roofing system from traffic and construction operations.

1. Protect roofing system when used for subsequent work platform, materials storage, or staging.

2. Distribute scaffolding loads to exert maximum 50 percent roofing system materials compressive strength.

B. Loose lay temporary insulation board overlaid with plywood or OSB.

1. Weight boards to secure against wind uplift.

C. Remove protective materials immediately before acceptance.

D. Repair damage.

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