The assembly details an aluminum storefront system set against a limestone wall opening with a typical backer rod and sealant joint. The jamb is backed by fire-retardant treated wood blocking and gypsum board interior finishes. A fluid-applied air and vapor barrier protects the rough opening, complemented by four inches of wool insulation. An aluminum trim piece matches the frame finish, tying the storefront system to the limestone return at the opening.
GYP BD STOREFRONT SYSTEM BACKER ROD AND SEALANT, TYP RETURN LIMESTONE AT OPENING 4" WOOL INSULATION FLUID APPLIED AIR/VAPOR BARRIER 5/8" GYP BOARD WINDOW RO ALUMINUM TRIM , MATCH FRAME FINISH FRT BLOCKING
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