High-quality tongue and groove subfloor panel. LP® TopNotch® sub-flooring features a line of performance OSB sub-flooring to fit any building project.
LP TopNotch sub-flooring 350 product panels are surface sanded. Moisture-resistant edge sealant is applied to all LP TopNotch products.
Incredible strength, stiffness and moisture resistance.
Self-spacing tongue and groove design speeds installation.
Designed for optimum moisture resistance.
Unique RainChannel notch system to help drain rainwater away during construction.
Wood sourced through programs certified under the Sustainable Forestry Initiative®.
Manufacturer's transferable limited warranty : 50-Year with 200-Day No Sand.
Products backed by long-term warranties so you can build with confidence.