CCAC West Hills Campus WHC Main Roof Project WHC Main Roof Project
Date of Issue (05/26/2022)
B. Membrane Flashing: Manufacturer's standard, smooth-backed, sheet flashing of same material, type, reinforcement, thickness, and color as PVC sheet membrane. 2.5 AUXILIARY ROOFING MATERIALS A. General: Auxiliary membrane roofing materials recommended by roofing system manufacturer for intended use, and compatible with membrane roofing. 1. Liquid-type auxiliary materials shall comply with VOC limits of authorities having jurisdiction. 2. Adhesives and sealants that are not on the exterior side of weather barrier shall comply with the following limits for VOC content when calculated according to 40 CFR 59, Subpart D (EPA Method 24): a. Plastic Foam Adhesives: 50 g/L. b. Single-Ply Roof Membrane Sealants: 450 g/L. c. Nonmembrane Roof Sealants: 300 g/L. d. Sealant Primers for Nonporous Substrates: 250 g/L. e. Sealant Primers for Porous Substrates: 775 g/L. Membrane Adhesive: 1. Bonding adhesive, contact-type solvent-based low VOC, for bonding TPA non-fleece- backed single ply membranes and flashings to substrates. a. Basis of design product: Tremco, TPA LV Single Ply Bonding Adhesive. b. VOC, maximum, ASTM D3960: 200 g/L. C. Flashing Membrane Adhesive: Same as membrane bonding adhesive. 1. Bonding adhesive, contact-type solvent-based low VOC, for bonding TPA non-fleece- backed single ply membranes and flashings to substrates. a. Basis of design product: Tremco, TPA LV Single Ply Bonding Adhesive. b. VOC, maximum, ASTM D3960: 200 g/L. D. Metal Termination Bars: Manufacturer's standard, predrilled stainless-steel or aluminum bars, approximately 1 by 1/8 inch (25 mm by 3 mm) thick; with anchors. E. Joint Sealant: Elastomeric joint sealant compatible with roofing materials, with movement capability appropriate for application. B.
075419 - Page 7 of 14 POLYVINYL-CHLORIDE (PVC/TPA) ROOFING
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