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ESR-1475 Page 2 of 14 <br />release agent on the back side for use in covering hips and ridges. See Table 2 for product sizes, exposure to <br />the weather and manufacturing locations. See also Figure 2. <br />3.1.4.1 Royal Sovereign® Ridge Cap Shingles: These ridge cap shingles are field-cut from Royal <br />Sovereign® three-tab strip shingles. The field-cut ridge cap shingles are compatible with any of the GAF <br />shingles recognized in this report. <br />3.1.4.2 Z®Ridge Distinctive Ridge Cap Shingles: These shingles are strips that are scored for separation <br />into four ridge cap shingles. <br />3.1.4.3 Seal-A-Ridge® Ridge Cap Shingles and Seal-A-Ridge® AS SBS-Modified IR Ridge Cap <br />Shingles: These shingles are strips that are scored for separation into three ridge cap shingles. <br />3.1.4.4 Ridglass® Premium Ridge Cap Shingles: These shingles are individual, thick, ultra-high profile <br />ridge cap shingles. <br />3.1.4.5 TimberTex® Premium Ridge Cap Shingles: These shingles are double layer strips that are scored <br />for separation into three ridge cap shingles. <br />3.1.4.6 TimberCrest® Premium SBS-Modified Ridge Cap Shingles: These shingles are individual, thick, <br />ultra-high profile ridge cap shingles with a bullnose leading edge. <br />3.1.5 Starter Shingles: <br />3.1.5.1 General: Starter Strip shingles are factory-made shingles used under the first course of shingles <br />being installed or applied on the roof. See Table 2 for product sizes and manufacturing locations. See also <br />Figure 2. <br />3.1.5.2 Pro-Start® Starter Strip Shingles: These shingles are strips that are scored for separation into two <br />starter shingles. The mineral surfacing is on the weather side, with fine mineral granules on the underside. The <br />self-sealing strip edge is applied facing up and along the roof eave or rake edge. <br />3.1.5.3 WeatherBlocker™ Premium Starter Strip Shingles: These starter shingles are strips with <br />perforations to assist with alignment of various shingle sizes. The mineral surfacing is on the weather side, <br />with fine mineral granules on the underside. <br />3.1.5.4 StarterMatch® Starter Strip Shingles and StarterMatch® Complementary Color Starter Strip <br />Shingles: These starter shingles are color coordinated to match the GAF Grand Sequoia®, Grand Sequoia® <br />AS and Grand Sequoia® ArmorShield® field shingles. The starter shingles must be installed as the second <br />starter at the eaves on Grand Sequoia®, Grand Sequoia® AS and Grand Sequoia® ArmorShield® applications. <br />3.2 Fasteners: <br />Fasteners must comply with ASTM F1667 and must be minimum No. 12 gage [0.105-inch-diameter (2.67 mm) <br />shank], 3/8-inch-diameter-head (9.5 mm), galvanized, stainless steel, aluminum, or copper, barbed-, deformed, <br />or smooth–shank roofing nails. Fasteners must be of sufficient length to penetrate 3/4 inch (19.1 mm) into the <br />sheathing, or through the sheathing, whichever is less. <br />3.3 Underlayment: <br />Under the 2024, 2021 and 2018 IBC, the roof underlayment must be in accordance with Section 1507.1.1 and <br />Table 1507.1.1(1). Under the 2015, 2012, 2009 and 2006 IBC, the roof underlayment must be in accordance <br />with Section 1507.2.3. Under the 2024, 2021, 2018 and 2015 IRC, the roof underlayment must be in <br />accordance with Section R905.1.1 and Table R905.1.1(1). Under the 2012, 2009 and 2006 IRC, the roof <br />underlayment must be in accordance with Section R905.2.3. Underlayment must comply with ASTM D226 <br />Type I or Type II; ASTM D4869 Type I, Type II, Type III, or Type IV; or ASTM D6757. Under the 2024 IBC and <br />IRC, ASTM D1970 or ASTM D8257 complying underlayment is also permitted. <br />3.4 Asphalt Cement: <br />Asphalt roofing cement used for hand-sealing the shingles must comply with ASTM D4586, Type I, Class I, or <br />Type II, Class I. <br />4.0 DESIGN AND INSTALLATION <br />4.1 New Construction: <br />4.1.1 General: <br />When installed on new construction in accordance with this section, the shingles are a Class A roof covering. <br />The shingles, underlayment and flashings must be installed in accordance with IBC Section 1507.2 or IRC <br />Section R905.2 except as noted in this report. The shingles must be installed over roof decks of code- <br />complying, minimum 3/8-inch-thick (9.5 mm) exterior-grade plywood; 7/16-inch-thick (11.1 mm) oriented strand