ABSTRACT
Fire retardant plywood is not a roofing product per se, but it is frequently used in conjunction with roofing products. Building Codes as an example, frequently require fire retardant plywood at party walls between condominiums or apartments, and on the roof deck about 2 m (6 ft) on each side of the party wall. Fire retardant plywood works by early charring. Charred wood retards flames. Salts impregnated into the wood, triggered by heat, cause the early charring.
