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<br /> <br /> <br />Empire Slate Roof System Page 6 of 10 <br />EcoStar LLC Gold Star Spec Updated 02/2021 <br />2. Tile Fasteners <br /> <br />a. EcoStar ring shank roofing nail with a 3/8” (9.5 mm) diameter head and a minimum of 1-1/2” <br />(38 mm) long shank made from stainless steel. Nails can b e supplied either as a hand-drive <br />style or in coils for use in pneumatic tools. The EcoStar ring shank roofing nail is required <br />for fastening of all EcoStar roof tiles. <br /> <br />PART 3 - EXECUTION <br />3.01 SUBSTRATE CRITERIA <br />A. The building owner or owner’s representative is responsible for providing and determining that the <br />substrate is suitable to receive the Empire Slate tile roof system and the Authorized EcoStar Gold Star <br />Applicator should not proceed until all defects have been corrected. <br /> <br />B. The Empire Slate roof system may only be applied over: <br /> <br />1. Minimum 15/32” (12 mm) plywood or 7/16” (11 mm) OSB decking, properly gapped for <br />expansion. <br /> <br />2. Minimum ¾” (19 mm) tongue and groove wood decking with end gaps not exceeding ¼” (6 <br />mm), and board widths not exceeding 6” (152 mm). <br /> <br />3. Approved metal deck systems – (Metal deck systems may require the installation of appropriate <br />thickness nail base insulation prior to attaching the EcoStar tiles). Contact EcoStar’s technical <br />department for specifics. <br /> <br />4. Appropriate clearance on underside of decking or sheathing must be provided for proper <br />penetration of the EcoStar fastener. <br /> <br />C. Minimum slope of substrate for installation of Empire Slate roof systems shall be a minimum of 3/12 <br />(14) for 6” (152 mm) exposure installation and a minimum of 4/12 (18) for 7” (178 mm) exposure <br />installation. Contact the EcoStar technical department for approval of applications on lower slopes or <br />exceptions to this requirement. <br />3.02 SUBSTRATE PREPARATION <br />A. The building owner or owner’s representative is responsible for ensuring that all wet or damaged <br />substrate has been removed in a re-roofing application. <br /> <br />B. Existing roof material MUST be removed and a clean substrate free of foreign material be provided prior <br />to the installation of the Empire Slate tile roof system. Empire Slate tiles may NOT be installed directly <br />over any existing roof material or system. <br />3.03 INSTALLATION <br />A. Flashing & Sheet Metal – Install sheet metal and flashing metal in all valleys and where required. <br />EcoStar recommends a V-type, W-type or Double W-type metal valley flashing be used at all valleys. <br /> <br />B. Where required, install metal edging at all eaves and roof edges.