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1. Provide tapered boards where indicated for sloping to drain. Fabricate with taper of 1/4 <br /> inch per foot,unless otherwise indicated. <br /> B. Isocyanurate Insulation: Rigid cellular themial insulation. <br /> 1. Surface Burning Characteristics: Maximum flame-spread and smoke-developed <br /> values of 5 and 165,respectively. <br /> C. Perlite Board Roof Insulation: Rigid boards produced by combining expanded perlite and fibers <br /> with binders,coated or impregnated one side,to comply with ASTM C 728;r-value of 2.78 at 75 deg F <br /> (23.9 deg C). , <br /> 2.5 AUI�IIL�ARY INSULATION MATERIALS <br /> A. Adhesive for Bonding Insulation: Type recommended by insulation manufacturer and complying <br /> with fire-resistance requirements. <br /> B. Mastic Sealer: Type recommended by insulation manufacturer for bonding edge joints and <br /> filling voids. <br /> C. Mechanical Anchors: Corrosion-resistant type as recommended by insulation <br /> manufacturer for deck type and complying with fire and insurance wind-uplift rating requirements. <br /> 1. Provide system tested and approved for I-60 wind-uplift rating. <br /> PART 3-EXECUTION <br /> 3.1 PREPARING SUBSTRATE <br /> A. General: <br /> Comply with manufactiue's instructions to prepare substrate to receive single-ply membrane system. <br /> 1. Verify that penetrations,expansion joints and blocking are in place and secured and that <br /> roof drains aze properly clamped in position. <br /> B. Clean substrate of dust,debris and other substances detrimental to single-ply system <br /> insulation. Remove sharp projections. <br /> C. Install cant strips,flashings,and accessory items as shown and as recommended by <br /> manufacture. <br /> D. Prime substrate where recommended by manufacture of materials being installed. <br /> E. Prevent compounds&om entering and clogging drains and conductors and from spilling <br /> or migrating onto surfaces of other work. <br /> 3.2. INSTALLING INSULATION <br /> A. General:Extend insulation full thickness in two layers,or in multiple layers over entire surface to <br /> be insulated,cutting and fitting tightly around obstructions. Form cant strips,crickets saddles <br /> and tampered areas with additional material as shown and as required for proper drainage of <br /> membrane. <br /> Page 4 of 6 <br />