Elevate your sub-flooring with LP® TopNotch® 350 Durable Sub-Flooring. Available in two options to fit any building project, our line of performance OSB sub-flooring helps you take your build to the next level.
Incredible strength, stiffness and moisture resistance.
Self-spacing tongue and groove design speeds installation.
Qualifies as carbon negative, helping you build sustainably by choosing products that store more carbon than is released in their life cycle.
Designed for optimum moisture resistance.
Unique RainChannel notch system to help drain rainwater away during construction.
*Performance category replaces the fractional nominal thickness used in PS2. The Performance Category is consistent with the panel thickness used in the U.S. model building codes.
LP® TopNotch® 350 Durable Sub-Flooring is manufactured with Engineered Strand Technology for a flat, strong and sturdy sub-floor.