A non-combustible gypsum core is encased in a robust natural-finish paper on the face side and a strong liner paper on the reverse of USG ME Gypsum Board Moisture Resistant WETSTOP, a factory-produced, asbestos-free, 1200 x 2400mm standard panel size. By adding particular chemicals that assure a stronger resistance to water penetration, the gypsum core's moisture resistance is improved. To strengthen and protect the core, the face paper is folded around the long edges. The ends are square-cut and smooth-finished. The recessed (tapered) long edges of panels enable joints to be strengthened and covered with a joint treatment.
For priming and decorating with paint, texture, or wallcovering, follow manufacturer’s directions for materials used. All surfaces, including applied USG Middle East Sheetrock® Brand All Purpose Joint Compound, must be thoroughly dry, dust free, and not glossy. A prime coat of Sheetrock® Tuff-Hide Primer-Surfacer should be applied and allowed to dry before decorating when a Level 5 finish is required. To improve fastener concealment, where gypsum panel walls and ceilings will be subjected to strong artificial or natural side lighting and/or decorated with a gloss paint (eggshell, semi gloss, or gloss), the gypsum panel surface should be skim-coated with USG All Purpose Joint Compound or primed with Sheetrock® Tuff-Hide Primer-Surfacer to equalize suction before painting.
Surface Burning Characteristics: Class A