The Builder’s
Solution of Choice
Once you’ve worked with LP® TopNotch® Sub-Flooring, you’ll appreciate as never before the value of having an option. Three options, actually. LP TopNotch is the one and only family of sub-flooring products that offers you the choices you need when it comes to moisture resistance and strength. And when it comes to on-going support and resourceful assistance? At LP, that’s never even a question.
OSB Sub-Flooring
Taken Up A Notch
LP TopNotch is already one of the best-selling OSB sub-floorings in the world, thanks to its patented self-draining notch system and moisture-resistant edge sealant. Those advancements, together with our engineered panel composition, enable us to offer some of the industry’s strongest sub-flooring warranties.
3 Smart Choices,
1 Solid Solution
Since no one sub-flooring product can meet every jobsite need, we offer a trio of choices. Whatever your strength and moisture-resistance requirements, you’ll find an LP TopNotch solution that’s right for every home you build.
Looking for detailed product information? Want to see how LP TopNotch can pay off in money-back savings? Tap into our comprehensive Professional Resources, or if you prefer, contact us directly.

In the last two years, LP OSB has used 5 percent fewer raw materials due to improved manufacturing efficiencies.