Lightweight 12.7 mm (1/2 in.) Regular and 15.9 mm (5/8 in.) Type X glass-mat sheathing with moisture and mould resistance—up to 15% lighter than other glass-mat sheathings

Feature a coated fiberglass facer mat to maximize coverage of air/water barrier systems

Treated gypsum core, combined with fiberglass face and back, offers exceptional water resistance

Comply with ASTM C1177, Standard Specification for Glass Mat Gypsum Substrate for Use as Sheathing, for 12.7 mm (1/2 in.) Regular, 15.9 mm (5/8 in.) Type X and glass mat water-resistant gypsum substrate

Score a "10" when tested in accordance with ASTM D3273, Standard Test Method for Resistance to Growth of Mold on the Surface of Interior Coatings in an Environmental Chamber

Underwriters Laboratories Inc. (cUL) Classification of 12.7 mm (1/2 in.) panels as to surface-burning characteristics and noncombustibility

cUL Classification of 15.9 mm (5/8 in.)panels as to fire resistance, surface-burning characteristics and noncombustibility

Guaranteed for five years against manufacturing defects and have a 12-month limited-exposure warranty