Norbord is a leading global manufacturer of wood-based panels, and offers quality, value and solutions that meet the need's of today's marketplace. One of their newest solutions is the Durastrand Point-Six subflooring, which features a patened tapered edge that is designed to offset the effect moisture has on panel edges. If a panel is exposed to rain or humidity, the tapered edges have room to expand and become flush with the surface without ridging.