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Elevate structural stability
Product Specifications
- Recognized as carbon negative by ASTM in 2023
- Available performance categories from 19/32 to 1-1/8*
- Can be used for residential and light commercial applications
- LP TopNotch Sub-Flooring panels are certified by the APA
Features and Benefits
Performance
Incredible strength, stiffness and moisture resistance.
Easy Installation
Self-spacing tongue and groove design speeds installation.
Innovation
Designed for optimum moisture resistance.
RainChannel® Technology
Unique RainChannel notch system to help drain rainwater away during construction.
Sales Tools
Find out how LP TopNotch® Sub-Flooring can benefit your build.
Product Data Sheet
Sales Sheet
8 Common Sub-Floor Install Mistakes
Portfolio Product Guide
Technical Documents
Get the details on sub-flooring installation, warranty and more.
Installation Instructions
Rebates
Warranty Information
Environmental Product Declaration
Building for Resiliency
LP TopNotch® Sub-Flooring boasts superior moisture resistance.
How Does Gorilla Glue® Technology Work?
Best Options for Sub-Flooring
Carbon Negative Product Portfolio
Technical Guide
LP® TopNotch® Sub-flooring
LP® TopNotch® Sub-Flooring features a line of performance OSB sub-flooring available in two options to fit any building project.
How It's Made
LP® TopNotch® 350 Durable Sub-Flooring is manufactured with Engineered Strand Technology for a flat, strong and sturdy sub-floor.
- Wood strands blended with thermal-set, waterproof adhesives are arranged in cross-directional layers and bonded together under extreme pressure
- Notches cut into the panels contribute to RainChannel® technology
- LP TopNotch 350 Durable Sub-Flooring product panels are surface sanded
- Moisture-resistant edge sealant is applied to all LP TopNotch products
ADVANCED RAINCHANNEL® TECHNOLOGY
Experience the industry-leading innovation of LP® TopNotch® 350. Featuring advanced RainChannel® technology, it is designed to elevate every build, manage rainwater and prevent moisture-related issues during construction. Trust the consistent quality and superior performance of LP® TopNotch® 350 and ensure a durable, resilient foundation for all your projects.
