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Gypsum Board

Gypsum board, commonly known as drywall,is the technical product name used by manufacturers for a specific board with a gypsum core and a paper facing.

Gypsum board is the premier building material for wall, ceiling, and partition systems in residential, institutional, and commercial structures and is designed to provide a monolithic surface when joints and fastener heads are covered with a joint treatment system.

One principal advantage of gypsum board over plywood, hardboard, and fiberboard is its strong fire resistance. Gypsum products also provide sound control, economy, versatility, quality, and convenience.

Gypsum Board and Gypsum Panel Products are described in the Fire Resistance Design Manual as

Gypsum Board – defined in ASTM C 11, Standard Terminology Relating to Gypsum and Related Building Materials and Systems, as “the generic name for a family of sheet products consisting of a noncombustible core primarily of gypsum with paper surfacing.” Gypsum board may be further described as follows:

  • Regular Gypsum Board – a gypsum board with naturally occurring fire resistance from thegypsum in the core; or
  • Type X Gypsum Board – a gypsum board with special core additives to increase the natural fire resistance of regular gypsum board.