Weyerhaeuser says its Hardwood Edge OSB panel, for use under hardwood floors, resists swelling and shrinkage that loosens fasteners securing boards to substrate in wet places. A drainage system has grooves to limit water absorption and a seal to reduce edge swelling. It’s available in Eastern markets. Weyerhaeuser,
www.weyerhaeuser.com, 800.525.5440.
Hardwood Edge OSB by Weyerhaeuser
