National Gypsum Company is a manufacturer of building and gypsum wallboard products. The company offers Soundbreak gypsum boards and Hi-Impact XP and Hi-Abuse XP wallboards in a range of specifications. It provides mold-resistant and gypsum rock products to its customers. National Gypsum Company also offers ceiling boards and panels and paper and fiberglass tapes in several sizes. The company also sells a variety of plasters, including veneer, gauging and molding. Additionally, it has cement boards and shaft wall systems available in various configurations. National Gypsum Company is a member of the U.S. Green Building Council. Headquartered in Charlotte, N.C., the company maintains a location in Rotan, Texas.