36E77619R0097-0002002.pdf

Clean Core Addition Solicitation RFP VA-241-P-112

VAMC, Providence, RI Project No. 650-337

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SECTION 07 53 23

ETHYLENE-PROPYLENE-DIENE-MONOMER ROOFING

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Ethylene Propylene Diene Monomer (EPDM) sheet roofing adhered to insulated roof deck.

1.2 RELATED REQUIREMENTS

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

B. Substrate Board, Vapor Retarder, Roof Insulation, and Cover Board:

Section 07 22 00, ROOF AND DECK INSULATION.

C. Roof Membrane Color: Section 09 06 00, SCHEDULE FOR FINISHES.

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. A276/A276M-15 - Stainless Steel Bars and Shapes.

2. B209-14 - Aluminum and Aluminum-Alloy Sheet and Plate.

3. B209M-14 - Aluminum and Aluminum-Alloy Sheet and Plate (Metric).

4. C67-14 - Sampling and Testing Brick and Structural Clay Tile.

5. C140/C140M-15 - Sampling and Testing Concrete Masonry Units and

Related Units.

6. C936/C936M-15 - Solid Concrete Interlocking Paving Units.

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

Temperature Using Portable Emissometers.

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

Temperature Using a Portable Solar Reflectometer.

9. D751-06(2011) - Coated Fabrics.

10. D1248-12 - Polyethylene Plastics Extrusion Materials for Wire and Cable.

11. D1876-08(2015)e1 - Peel Resistance of Adhesives (T-Peel Test).

12. D2103-15 - Polyethylene Film and Sheeting.

13. D2240-05(2010) - Rubber Property-Durometer Hardness.

14. D3884-09(2013)e1 - Abrasion Resistance of Textile Fabrics (Rotary Platform, Double-Head Method).

15. D4263-83(2012) - Indicating Moisture in Concrete by the Plastic Sheet Method.

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

17. D4637/D4637M-14e1 - EPDM Sheet Used In Single-Ply Roof Membrane.

18. E96/E96M-15 - Water Vapor Transmission of Materials.

19. E408-99(2015) - 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 - Measuring Solar Reflectance of Horizontal and Low-Sloped

Surfaces in the Field.

22. G21-15 - Resistance of Synthetic Polymeric Materials to Fungi.

F. Cool Roof Rating Council (CRRC):

1. 1-15 - Product Rating Program.

G. Federal Specifications (Fed. Spec.):

1. UU-B-790A - Building Paper, Vegetable Fiber: (Kraft, Waterproofed, Water Repellent and Fire Resistant).

H. Florida Department of Business and Professional Regulation (FL):

1. Approved - Product Approval.

I. National Roofing Contractors Association (NRCA):

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

J. U.S. Department of Agriculture (USDA): USDA BioPreferred Catalog.

K. UL LLC (UL):

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

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

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

Technology (NIST):

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1. DOC PS 1-09 - Structural Plywood.

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

Panels.

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

1. Energy Star - ENERGY STAR Program Requirements for Roof Products

Version 3.0.

1.4 PREINSTALLATION MEETINGS

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

1. Required Participants:

a. Contracting Officer's Representative.

b. Architect/Engineer.

c. Contractor.

d. Installer.

e. 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.

j. Pull out test of fasteners.

k. Material storage, including roof deck load limitations.

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 layout.

2. Roofing membrane seaming and joint details.

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3. Roof membrane penetration details.

4. Base flashing and termination details.

5. Paver layout.

6. Paver anchoring locations and details.

C. Manufacturer's Literature and Data:

1. Description of each product.

2. Minimum fastener pull out resistance.

3. Installation instructions.

4. Warranty.

5. Product Data for Federally-Mandated Bio-Based Materials: For roof materials, indicating USDA designation and compliance with definitions for bio-based products, Rapidly Renewable Materials, and certified sustainable wood content.

D. Sustainable Construction Submittals:

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

2. Low Pollutant-Emitting Materials:

a. Show volatile organic compound types and quantities.

3. Energy Star label for roofing membrane.

E. 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.

F. Certificates: Certify products comply with specifications.

1. Fire and windstorm classification.

2. Energy performance requirements.

G. Qualifications: Substantiate qualifications comply with specifications.

1. Installer, including supervisors.

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

H. Field quality control reports.

I. Operation and Maintenance Data:

1. Maintenance manuals.

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.

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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.

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) and rising 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."

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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.

PART 2 - PRODUCTS

2.1 SYSTEM DESCRIPTION

A. Roofing System: Adhered roofing membrane, base flashing, roof insulation, fasteners, cover boards, copings edge metal and walkway pads.

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:

Corner Uplift Pressure: 3.351 kPa/sq. m (75 psf).

Perimeter Uplift Pressure: _2.934kPa/sq. m (50psf).

Field-of-Roof Uplift Pressure: 1.436kPa/sq. m (30psf).

2. Energy Performance:

a. EPA Energy Star Listed for low-slope roof products.

b. ASTM E1980; Minimum 78 Solar Reflectance Index (SRI).

c. CRRC-1; Minimum 0.70 initial solar reflectance and minimum 0.75 emissivity.

d. Three-Year Aged Performance: Minimum 0.55 solar reflectance tested in according to ASTM C1549 or ASTM E1918, and minimum

0.75 thermal emittance tested in according to ASTM C1371 or

ASTM E408.

Where tested aged values are not available:

Calculate compliance adjusting initial solar reflectance according to ASHRAE 90.1.

Provide roofing system with minimum 64 three-year aged Solar

Reflectance Index calculated according to ASTM E1980 with

12 W/sq. m/degree K (2.1 BTU/h/sq. ft.) convection coefficient.

2.3 PRODUCTS - GENERAL

A. Basis of Design: Section 09 06 00, SCHEDULE FOR FINISHES.

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B. Provide roof system components from one manufacturer.

C. Sustainable Construction Requirements:

1. Bio-Based Materials: 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 EPDM ROOFING MEMBRANE

A. EPDM Sheet: ASTM D4637/D4637M, Type II - internally reinforced.

1. Thickness: 1.5 mm (60 mils).

2. Color: See Section 09 06 00, SCHEDULE OF FINISHES.

B. Additional Properties:

PROPERTY TEST METHOD REQUIREMENT

Shore A Hardness ASTM D2240 55 to 75 Durometer

Water Vapor

Permeance

ASTM E96/E96M Minimum 8 ng/Pa/s/sq. m

(0.14 perms) Water

Method

Fungi Resistance ASTM G21 After 21 days, no sustained growth or discoloration.

1. Use fire retardant membrane when not protected by ballast or pavers.

Verify for UL or approval.

2.5 MEMBRANE ACCESSORY MATERIALS

A. Sheet roofing manufacturer's specified products.

B. Flashing Sheet: Manufacturer's standard; same material, and color as roofing membrane.

1. Self-curing EPDM flashing adaptable to irregular shapes and surfaces.

2. Minimum Thickness: 1.5 mm (0.060 inch).

C. Factory Formed Flashings: Inside and outside corners, pipe boots, and other special flashing shapes to minimize field fabrication.

http://www.biopreferred.gov/

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D. Splice Adhesive or Tape: Manufacturer's standard for roofing membrane and flashing sheet.

E. Splice Lap Sealant: Liquid EPDM rubber for exposed lap edge.

A. Bonding Adhesive: Manufacturer's standard, water based if construction is performed in warmer months of the year or solvent based is construction is performed during winter months. G.C. and roofing subcontractor are to coordinate with Architect on what time of year roofing construction occurs and which bonding adhesive is allowable.

B. Termination Bars: Manufacturer's standard, stainless steel or aluminum, 25 mm wide by 3 mm thick (1 inch wide by 1/8 inch thick) factory drilled for fasteners.

C. Battens: Manufacturer's standard, galvannealed or galvanized steel, 25 mm wide by 1.3 mm thick (1 inch wide by 0.05 inch thick), factory punched for fasteners.

D. Pipe Compression Clamp:

1. Stainless steel drawband.

2. Worm drive clamp device.

E. Fasteners: Manufacturer's standard coated steel with metal or plastic plates, to suit application.

F. Fastener Sealer: One part elastomeric adhesive sealant.

G. Temporary Closure Sealers (Night Sealant): Polyurethane two part sealer.

H. Primers, Splice Tapes, Cleaners, and Butyl Rubber Seals: As specified by roof membrane manufacturer.

I. Asphalt Roof Cement: ASTM D4586/D4586M.

2.6 FASTENERS

A. Fasteners and washers required for securing pavers together with straps and to walls or other anchorage:

1. Straps for Securing Pavers Together:

a. Stainless Steel: ASTM A276/A276M, Type 302 or 304, minimum

0.46 mm (0.018 inch) thick.

b. Aluminum Strap: ASTM B209/B209M, minimum 2.39 mm (0.094 inch) thick.

c. Round corners on straps.

d. Form straps 38 mm (1-1/2 inches) wide, 3 m (10 feet) maximum length with 6 by 10 mm (1/4 by 3/8 inch) punched slotted holes at 100 mm (4 inch) centers centered on width of strap. Punch

07 53 23 - 9 hole size 2 mm (1/16 inch) larger than fastener shank when shank is thicker than 5 mm (3/16 inch).

B. Fasteners or Connectors for Pavers:

1. For Concrete Pavers: Extruded interlocking hollow shape polyethylene connector:

a. ASTM D1248, Type 1, low density, Class C, black weather resistant, Grade E6, tensile strength 15 MPa (2200 psi), Shore D hardness of 4, brittleness low temperature - 82 degrees C

(180 degrees F), softening temperature above 80 degrees C

(176 degrees F).

b. Length: 50 mm (2 inches), with center stop and insert leg with ribs to resist withdrawal; minimum 1.3 mm (0.05 inch) thick.

2. Fasteners for Pavers Straps:

a. Stainless steel as recommended by manufacturer of paver in which fastener is anchored.

b. Fasteners that are not acceptable include:

Impact or power actuated fasteners.

Fasteners that do not require a predrilled pilot hole.

Fasteners with lead or white metal anchors.

Plastic anchors not stabilized against ultraviolet light.

2.7 SEPARATION SHEET

A. Polyethylene Film: ASTM D2103, 0.2 mm (6 mils) thick.

B. Building Paper: Fed. Spec. UU-B-790.

1. Water Vapor Resistance: Type I, Grade A, Style 4, reinforced.

2. Water Vapor Permeable: Type I, Grade D, Style 4, reinforced.

2.8 FLEXIBLE TUBING

A. Closed cell neoprene, butyl polyethylene, vinyl, or polyethylene tube or rod.

B. Diameter approximately 1-1/2 times joint width.

2.9 WALKWAY PADS

A. Manufacturer's standard, slip resistant, approximately 450 mm by 450 mm

(30 by 30 inches) square and 5 mm (3/16 inch) thick with rounded corners.

2.10 PROTECTION MAT OR SEPARATOR SHEET

A. Protection Mat:

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1. Water pervious; either woven or non-woven sheet of long chain polymeric filaments or yarns such as polypropylene, black polyethylene, polyester, or polyamide; or, polyvinylidene-chloride formed into a pattern with distinct and measurable openings.

2. Filter fabric equivalent opening size (EOS): Not finer than the

U.S.A. Standard Sieve Number 120 and not coarser than the U.S.A.

Standard Sieve Number 100. EOS is defined as the number of the

U.S.A. Standard Sieve having openings closest in size to the filter cloth openings.

3. Edges of fabric selvaged or otherwise finished to prevent raveling.

4. Abrasion Resistance:

a. After being abraded in conformance with ASTM D3884 using rubber-hose abrasive wheels with one kg load per wheel and 1000 revolutions, perform tensile strength test as specified in

ASTM D1682, paragraph.

b. Result: 25 kg (55 lbs.) minimum in any principle direction.

5. Puncture Strength:

a. ASTM D751 tension testing machine with ring clamp; steel ball replaced with an 8 mm (5/16 inch) diameter solid steel cylinder with a hemispherical tip centered within the ring clamp.

b. Result: 57 kg (125 lbs.) minimum.

6. Non-degrading under a wet or humid condition within minimum

4 degrees C (40 degrees F) to maximum 66 degrees C (150 degrees F) when exposed to ultraviolet light.

7. Minimum Sheet Width: 2400 mm (8 feet).

2.11 ACCESSORIES

A. Temporary Protection Materials:

1. Expanded Polystyrene (EPS) Insulation: ASTM C578.

2. Plywood: NIST DOC PS 1, Grade CD Exposure 1.

3. Oriented Strand Board (OSB): NIST DOC PS 2, Exposure 1.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine and verify substrate suitability for product installation with roofing installer and roofing inspector present.

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

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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 beginning roofing work:

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

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 including roof deck flutes, 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. Keep primer back 100 mm (f4our inches) from precast concrete deck joints.

3. Allow primer to dry before application of bitumen.

F. Insulating Concrete Decks:

1. Allow deck to dry out minimum five days after installation before installing roofing materials.

2. Allow additional drying time when precipitation occurs before installing roofing materials.

G. Existing Membrane Roofs and Repair Areas:

1. Comply with Section 07 01 50.19 PREPARATION FOR REROOFING.

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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 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 requirements.

C. Comply with UL 580 for uplift resistance.

D. Do not allow membrane and flashing to contact surfaces contaminated with asphalt, coal tar, oil, grease, or other substances incompatible with EPDM.

3.5 ROOFING INSTALLATION

A. Install membrane perpendicular to long dimension of insulation boards.

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B. Begin membrane installation at roof low point and work towards high point. Lap membrane shingled in water flow direction.

C. Position membrane free of buckles and wrinkles.

D. Roll membrane out; inspect for defects as membrane is unrolled. Remove defective areas:

1. Allow 30 minutes for membrane to relax before proceeding.

2. Lap edges and ends minimum 75 mm (3 inches). Clean lap surfaces.

3. Install seam adhesive or tape, unless furnished with factory applied adhesive strips. Apply pressure to develop full adhesion.

4. Check seams to ensure continuous adhesion and correct defects.

5. Finish seam edges with beveled bead of lap sealant.

6. Finish seams same day as membrane is installed.

7. Anchor membrane perimeter to roof deck and parapet wall as indicated on drawings.

E. Membrane Perimeter Anchorage:

1. Install batten with fasteners at perimeter of each roof area, curb flashing, expansion joints and similar penetrations on top of roof membrane as indicated on drawings.

2. Mechanical Fastening:

a. Space fasteners maximum 300 mm (12 inches) on center, starting

25 mm (1 inch) from ends.

b. When battens are cut, round edge and corners before installing.

c. Set fasteners in lap sealant and cover fastener head with fastener sealer, including batten.

d. Stop batten where batten interferes with drainage. Space ends of batten 150 mm (6 inch) apart.

e. Cover batten with 225 mm (9 inch) wide strip of flashing sheet.

Seal laps with lap seam adhesive and finish edges with lap sealant.

f. At fascia-cants turn roofing membrane down over front edge of blocking, cant, or nailer. Secure roofing membrane to vertical portion of nailer; with fasteners spaced maximum 150 mm

(6 inches) on centers.

g. At parapet walls intersecting building walls and curbs, secure roofing membrane to structural deck with fasteners 150 mm

(6 inches) on center or as shown in NRCA Manual.

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F. Adhered System Installation:

1. Apply bonding adhesive in quantities required by roofing membrane manufacturer.

2. Fold sheet back on itself, clean and coat the bottom side of the membrane and the top of substrate with adhesive. Do not coat the lap joint area.

3. After adhesive has set according to adhesive manufacturer's instructions, roll roofing membrane into adhesive minimizing voids and wrinkles.

4. Repeat for other half of sheet.

5. Cut voids and wrinkles to lay flat. Clean and patch cut area.

G. Loosely Laid and Ballasted System Installation:

1. Loosely lay roofing membrane.

2. Adhere membrane to comply with ANSI/SPRI RP-4 requirements.

3.6 FLASHING INSTALLATION

A. Install flashings on same day as roofing membrane is installed. When flashing cannot be completely installed in one day, complete installation until flashing is watertight and provide temporary covers or seals.

B. Flashing Roof Drains:

1. Install roof drain flashing according to roofing membrane manufacturer's instructions.

a. Coordinate to set the metal drain flashing in asphalt roof cement, holding cement back from the edge of the metal flange.

b. Do not allow roof cement to contact EPDM roofing membrane.

c. Adhere roofing membrane to metal flashing with bonding adhesive.

2. Turn metal drain flashing and roofing membrane down into drain body.

Install clamping ring and strainer.

C. Installing Base Flashing and Pipe Flashing:

1. Install flashing sheet to pipes, walls and curbs to minimum 200 mm

(8 inches) height above roof surfaces and extend roofing manufacturer's standard lap dimension onto roofing membranes.

a. Adhere flashing with bonding adhesive.

b. Form inside and outside corners of flashing sheet according to

NRCA Manual. Form pipe flashing according to NRCA Manual.

c. Lap ends roofing manufacturer's standard dimension.

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d. Adhesively splice flashing sheets together, and adhesively splice flashing sheets to roofing membranes. Finish exposed edges with lap sealant.

2. Anchor top of flashing to walls and curbs with fasteners spaced maximum 150 mm (6 inches) on center. Use surface mounted fastening strip with sealant on ducts. Use pipe clamps on pipes or other round penetrations.

3. Apply sealant to top edge of flashing.

D. Installing Building Expansion Joints:

1. Install base flashing on curbs as specified.

2. Coordinate installation with roof expansion joint system .

3. Install flexible tubing 1-1/2 times width of joint centered over joint. Cover tubing with flashing sheet adhered to base flashing and lapping base flashing roofing manufacturer's standard dimension.

Finish edges of laps with lap sealant.

E. Repairs to Membrane and Flashings:

1. Remove sections of roofing membrane or flashing sheet that are creased, wrinkled, or fishmouthed.

2. Cover removed areas, cuts and damaged areas with patch extending

100 mm (4 inches) beyond damaged, cut, or removed area. Adhesively splice patch to roofing membrane or flashing sheet. Finish edge of lap with lap sealant.

3.7 WALKWAY PAD INSTALLATION

A. Clean membrane where pads are applied.

B. Adhere pads to membrane with splicing cement.

C. Layout with minimum 25 mm (1 inch) and maximum 50 mm (2 inch) space between pads.

3.8 FIELD QUALITY CONTROL

A. Field Tests: Performed by testing laboratory specified in Section

01 45 29, TESTING LABORATORY SERVICES.

1. Fastener Pull Out Tests: ANSI/SPRI FX-1; one test for every

230 sq. m (2,500 sq. ft.) of deck. Perform tests for each combination of fastener type and roof deck type before installing roof insulation.

a. Test at locations selected by Contracting Officer's

Representative.

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b. Do not proceed with roofing work when pull out resistance is less than manufacturer's required resistance.

c. Test Results:

Repeat tests using different fastener type or use additional fasteners achieve pull out resistance required to meet specified wind uplift performance.

Patch cementitious deck to repair areas of fastener tests holes.

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

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

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

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

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

6. Cut samples perpendicular to seams.

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

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

9. 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.

3.9 CLEANING

A. Remove excess adhesive before adhesive sets.

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

3.10 PROTECTION

A. Protect roofing system from construction operations.

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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 protection when directed by Contacting Officer's Representative.

D. Repair damage.

- - E N D - -

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

3. Energy Star label for roofing membrane.

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

B. Correct unsatisfactory conditions before beginning roofing work.

E. Remove sandbags and store for reuse.

2. Turn metal drain flashing and roofing membrane down into drain body. Install clamping ring and strainer.