Where to Buy National Gypsum Company

Regular gypsum board is a panel of noncombustible gypsum core faced with paper, used for interior wall and ceiling surfaces. It is installed on wood or metal framing in commercial construction where fire-rated or moisture-resistant boards are not required.

Fire-resistant gypsum panel with a glass-fiber-reinforced core that provides increased fire resistance compared with standard board, typically 5/8 inch thick. Used in rated wall and ceiling assemblies to achieve required fire-resistance ratings in commercial construction.

Gypsum wallboard treated to resist moisture and mold growth, commonly identified by green or purple facing. Used in bathrooms, kitchens, and other high-humidity interior areas as a substrate for finishes.

Shaftliner panels are moisture- and fire-resistant gypsum boards with a specialized core, typically 1 inch thick, installed vertically between shaft framing. They are used in commercial construction to form fire-rated enclosures for elevator shafts, stairwells, and mechanical chases in area-separation and shaft wall systems.

Gypsum panels faced with glass-fiber mats in place of paper for moisture and mold resistance. Used as sheathing, tile backer, and interior board in areas exposed to humidity or weather during construction.

Joint compound and tape are used to finish gypsum board seams, embedding paper or mesh tape in compound to conceal joints and fastener heads before painting. They are used in commercial construction to produce continuous, finished drywall surfaces at specified levels of finish.

Cementitious or gypsum-based material applied wet in coats over lath or masonry to form a hard, continuous interior or exterior finish. Used in commercial construction for veneer plaster, three-coat systems, and ornamental finishes.

Rigid panel of cement and reinforcing fibers used as a substrate for tile, thin brick, and exterior finishes. Provides a stable, water-durable backer in wet areas such as showers, kitchens, and exterior cladding assemblies.