LP FlameBlock Fire Rated SmartGuard Treated OSB
LP® FlameBlock® Fire-Rated SmartGuard Treated 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. It provides extended burn-through resistance, delivering a 20-minute thermal barrier (ASTM E119). It’s durable on the job site, easy to work with, and is Exposure-1 rated to withstand weather during normal construction delays. LP FlameBlock Sheathing is cost competitive and is available in a variety of PS2-rated thicknesses and lengths, including Struc-1. Plus it contains no hazardous chemicals. Backed by a 20-Year Transferable Limited Warranty.
Product Tabs
- Structural Fire-Rated Sheathing
- UL-Certified Class A Flame Spread Rating
- Non-Combustible, Fiberglass-Reinforced Magnesium Oxide Coating over LP OSB
- Available with Pyrotite Coating on One or Two Sides of the Product
- Exposure 1 Classification, Durable and Easy to Handle Job Site
- No Hazardous Chemicals
- Variety of Thickness Categories and Lengths, Including Struc-1
- ICC Approved for Wall and Rood Deck Applications
- CAL FIRE Code-Approved for Exterior Walls, Eaves and Soffits in WUI Zones
- Available in 7/16, 15/32, 19/32, 23/32 Categories
- 20-Year Transferable Warranty
