Thermo-Brace and Thermo-Brace S.I.B. incorporate an air and moisture barrier on both sides of the light-weight structural sheathing solutions. Saving on labor and material costs, the sheathing line offers a better alternative to OSB and expensive, heavier panel system competitors. Thermo-Brace is high quality, long fibered, specially treated water- and weather-resistant plies. Plies are pressure laminated with a special water-resistant adhesive. Thermo-Brace S.I.B. is a reversible, lightweight, 4-in-1 structural sheathing solution that provides four layers of enforced protection against water, moisture vapor, mold, and more.