Method for treating Plywood or OSB Board which comprises: applying an aqueous Preservation of Fire Retardant Coating; and the surface of the product, which gives a Fire Retardant effect at a distance of Flame propagation in a less than 183 cm ASTM e-84

摘要

A process is provided for treating wood products including lumber, plywood and other engineered wood products comprising the steps of applying an aqueous fire-retardant impregnate and applying a coating to the surface of the wood product. In one embodiment, said process confers fire-retardant properties to the wood products sufficient to pass the extended burn test of ASTM E-84. The present invention also provides fire retardant wood products.