scope:

Abstract:

Tolko Zinc-Borate treated OSB is manufactured in accordance with the in-plant manufacturing standard approved by APA. The OSB panel is manufactured with wood flakes, adhesive, wax, and Rio Tinto Borogard® ZB zinc borate, which is added for decay and insect resistance to a retention level equivalent to that specified in American Wood Protection Association (AWPA) Standard T1-14 and to that specified as Hazard Class H2 in the Australia - New Zealand standard AS/NZS 1604.2:2012. The efficacy of the preservative treatment is outside the scope of this report and the APA certification program. Tolko treated OSB meets the performance requirements of PS 2, and is edge sealed and available in thicknesses from 3/8 to 1-1/8 inches