Drain Your Troubles Away
Nothing can damage an exposed sub-floor during construction like standing water. That's why we invented a patented notch system that quickly drains away rainwater, protecting your investment in materials and labor.
LP® TopNotch® Sub-Flooring quickly drains away standing surface water through notches in the tongue-and-groove edges and panel ends.
Pick Your Product
All three LP TopNotch products feature an advanced edge moisture seal, great fastening and nail-holding properties, and our patented self-draining notches.
A self-draining sub-flooring at a great value from LP.
Better moisture resistance for wetter seasons or climates.
Stronger. Superior water resistance. And a 90-day no-sand guarantee.
The Pros Know
Skip the Sanding
Rain rain, go away. A little water on the sub-floor can mean lots of sanding. But with LP TopNotch High Performance, you have a 90-day no-sand guarantee. If you have to sand this product, we'll pay for the sanding!