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Gaf Roof
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Application Instructions - GAF
www.gaf.comVersaShield® Fire-Resistant Roof Deck Protection in order to mintaain a Class A fire rating for GAF asphalt shingles. • FASTENERS: Use only zinc-coated steel or aluminum, 10-12 gauge, barbed, deformed, or smooth shank roofing nails with heads 3/8" (10mm)