Fire-retardant wood roof assembly

摘要: A fire-retardant wood roof assembly is comprised of three layers; an outer layer wooden shingles or shakes, inner a subdeck that formed plurality adjacent members, and continuous interlayer series sheets steel foil. The foil nearest the upper longitudinal edge each member extend over portion top surface thereof, bend downwardly to conform member, fill space between next towards lower cover bottom member. protect from exposure flame air, dissipate heat such members should fireretardant shakes become exposed flame, seal members. Consequently, ignition above prevented.