A product made from wood strands arranged in layers and bonded with resin, OSB serves many uses including roof decking, sidewall sheathing and floor underlayment. A cost-effective, high-performance structural panel, LP OSB has been in use for more than three decades and is known for its uniformity, strength, density and workability.

LP® FlameBlock® Fire-Rated OSB Sheathing offers you the best of both worlds—impressive structural strength and remarkable burn-through fire resistance. Created by applying a patented, non-combustible Pyrotite® coating to LP® OSB panels, LP FlameBlock Sheathing is an ICC certified (ESR-1365), structural fire-rated sheathing with a Class A Flame Spread Rating.

LP® LongLength™ OSB Sheathing is a line of extended length OSB panels engineered specifically for wall applications. Designed for vertical installation, LP LongLength Sheathing can lower building costs, increase wall strength, and help meet code requirements in wind and seismic zones.

LP® TopNotch® Sub-Flooring is made with LP OSB, so it’s uniform, flat and rigid, with no core voids or knots.

LP® TechShield® is made by laminating a thin, durable sheet of aluminum to our LP OSB Sheathing. After the foil lamination process takes place, the panel is incised, resulting in small holes called VaporVents™, that penetrate the foil, glue and OSB substrate. This patented incising process, makes LP TechShield different from other radiant barrier products.

Weyerhaeuser Edge Gold™:

• The 50-year limited warranty is proof Weyerhaeuser Edge Gold™ panels perform. Thanks to patent-pending Down Pore™ self-draining technology and a proprietary edge seal, our panels withstand the elements so well that they can allow framers to extend their building season. We also provide a 200-day "no sand" limited warranty. Each panel is touch-sanded to provide a uniform appearance and tighter thickness tolerances. Weyerhaeuser Edge Gold panels install flat, stay flat and look good for customer walkthroughs.

Weyerhaeuser Edge™:

• Every Weyerhaeuser Edge™ panel is strong, stiff, and stable—it’s manufactured flat, installs flat, stays flat, and has been engineered to precise specifications to resist problems like cupping, warping, and sagging. With self-gapping tongue-and-groove edges, Weyerhaeuser Edge panels make installation fast and easy.

Radiant Barrier Sheathing (RBS):

• Weyerhaeuser Radiant Barrier Sheathing (RBS) comes pre-fabricated with a reflective foil layer that blocks more than 97%* of the sun’s radiant energy, minimizing heat transfer through the roof and insulation to interior living spaces. As an added plus, Weyerhaeuser RBS can even help keep unair-conditioned, uninsulated rooms like garages, workshops, and porches cooler, increasing a home’s usable space.

Weyerhaeuser OSB & Panels:

• Whether you need our wide array of oriented strand board products for your jobsite, the high-performance characteristics of our plywood, or the value that only MDF can provide … builders rely on Weyerhaeuser panels for good reason.