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.
Designed for optimum moisture resistance.
Wood sourced through programs certified under the Sustainable Forestry Initiative®.
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 Sub-Flooring is manufactured by the leader in strand technology for a flat, strong and sturdy floor.