CCAC West Hills Campus WHC Main Roof Project WHC Main Roof Project
Date of Issue (05/26/2022)
B. Insulation Fasteners: Factory-coated steel fasteners and metal or plastic plates complying with corrosion-resistance provisions in FM Approvals 4470, designed for fastening roof insulation and cover boards to substrate, and acceptable to roofing system manufacturer. 2.8 WALKWAY MATERIALS A. Walkway Material: 1. Walkway roll, reinforced PVC/TPA membrane roll with serrated slip-resistant surface, fabricated for heat welding to compatible PVC/TPA membrane surface. a. Basis of design product: Tremco, TPA Walkway Roll. b. Roll Size: 36 inches by 60 foot (914 mm by 18.3 m). c. Thickness / Color: Yellow, 0.156 inch (4 mm). d. Tensile, Grab ASTM D751: 200 lbf (890 N). e. Tear Strength, Tongue : 45 lbf (200N). f. Low Temp Flex: -40 deg F. (-40 deg C.). B. Protection Fabric: Woven or nonwoven polypropylene, polyolefin, or polyester fabric, water permeable and resistant to UV degradation, type and weight as recommended by roofing system manufacturer for application.
PART 3 - EXECUTION 3.1
EXAMINATION
A. Examine substrates, areas, and conditions, with Installer present, for compliance with the following requirements and other conditions affecting performance of roofing system: 1. Verify that roof openings and penetrations are in place and curbs are set and braced and that roof drain bodies are securely clamped in place. 2. Existing Prepared Roof Substrate: Verify that existing insulation and substrate is sound and dry. 3. Steel Roof Deck: a. Verify that deck is securely fastened and properly supported with no projecting fasteners and with no adjacent units in excess of 1/16 inch (1.6 mm) out of plane relative to adjoining deck.
4.
Verify that existing insulation and substrate is sound and dry.
B. Proceed with installation only after unsatisfactory conditions have been corrected.
075419 - Page 9 of 14 POLYVINYL-CHLORIDE (PVC/TPA) ROOFING
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