LP TechShield is the original radiant barrier sheathing and the #1 selling brand. Installed in more than one million homes, it has been on the market for more than a decade. This innovative product helps block radiant heat in the roof from entering the attic, keeping the attic cooler, lowering energy costs and making the home more comfortable. LP TechShield is the only radiant barrier sheathing that features patented VaporVents technology, which allows it to dry more quickly from construction moisture than other radiant barriers.