What Happens When OSB Gets Wet?
OSB is rated Exposure 1 for durability. Panels with this designation are intended for protected construction uses not permanently exposed to the weather, intended to resist moisture due to construction delays, or other conditions of similar severity. In order to be marked Exposure 1 OSB panels must meet specific (i.e. moisture cycling) bond requirements. Technological advances in resin and wax formulation over the past few years have resulted in panels that are much more resistant to the effects of moisture and to swelling. For most applications, OSB panels with Exposure 1 durability will offer excellent performance, even when subjected to normal moisture conditions during construction. Today’s OSB has a degree of inherent moisture resistance, imparted by the resin and wax formulation contained in the product. Panels are also treated with a sealant on the edges to retard moisture penetration. In addition, OSB is bonded with waterproof adhesives. In summary, OSB is not extremely sensiti
OSB is rated Exposure 1 for durability. Panels with this designation are intended for protected construction uses not permanently exposed to the weather, intended to resist moisture due to construction delays, or other conditions of similar severity. In order to be marked Exposure 1 OSB panels must meet specific (i.e. moisture cycling) bond requirements. Technological advances in resin and wax formulation over the past few years have resulted in panels that are much more resistant to the effects of moisture and to swelling. For most applications, OSB panels with Exposure 1 durability will offer excellent performance, even when subjected to normal moisture conditions during construction. Today’s OSB has a degree of inherent moisture resistance, imparted by the resin and wax formulation contained in the product. Panels are also treated with a sealant on the edges to retard moisture penetration. In addition, OSB is bonded with waterproof adhesives. In summary, OSB is not extremely sensiti
