CertaWrap Weather Resistant Barrier from CertainTeed acts as the primary line of defense against the elements during construction and a secondary water barrier after the cladding is installed. CertaWrap also provides water holdout, moisture vapor transmission, tear strength and surfactant resistance. In addition, the material inhibits the growth of mold and will not disintegrate over time. The product’s STUDfinder installation system helps ensure secure fastening to studs. A full line of accessories is available, including flashing and construction tape.