Used by top builders and carried by leading suppliers, LP TopNotch 350 durable sub-flooring is designed for optimum stability in both directions, and its smooth surface is sanded to lay flat. LP TopNotch 350 creates a strong, smooth foundation for a variety of finished flooring. LP TopNotch 350 is backed with a 200-day “no-sand” warranty and a 50-year transferable limited warranty. LP TopNotch 350 is the best value In durable Sub-Flooring.
Performance: incredible strength, stiffness and moisture resistance
200-Day "no sand" warranty
Easy installation: self-spacing tongue and groove design speeds installation
RainChannel technology: unique RainChannel notch system to help drain rainwater away during construction
50-Year transferable limited warranty: products backed by long-term warranties so you can build with confidence
Edge sealant minimizes water absorption