1. Scope

1.1 This specification covers the gypsum boards described in 1.1.1-1.1.9.

Note 1—Specifications C840 , C841 , C844 and C1280 contain application procedures for gypsum board.

1.1.1 Gypsum wallboard , designed for use on walls, ceilings, or partitions and that affords a surface suitable to receive decoration.

1.1.2 Predecorated gypsum board , designed for use as the finished surfacing for walls, ceilings, or partitions.

1.1.3 Gypsum backing board, coreboard, and shaftliner board , designed for use as a base in multilayer systems or as a gypsum stud or core in semisolid or solid gypsum board partitions, or in shaft wall assemblies.

Note 2—The terms backing board, coreboard, and shaftliner board refer to different end uses. The term gypsum backing board, as used in this specification, shall include gypsum coreboard and gypsum shaftliner board unless otherwise stated.

1.1.4 Water-resistant gypsum backing board , designed primarily to be used as a base for the application of ceramic or plastic tile on walls or ceilings. This product is also suitable for decoration.

1.1.5 Exterior gypsum soffit board , designed for use on exterior soffits and carport ceilings that are completely protected from contact with liquid water.

1.1.6 Gypsum sheathing board , designed for use as sheathing on buildings.

1.1.7 Gypsum base for veneer plaster , designed for use as a base for the application of gypsum veneer plaster.

1.1.8 Gypsum lath , designed for use as a base for the application of gypsum plaster.

1.1.9 Gypsum ceiling board , designed for use on interior ceilings with framing spaced not more than 24 in. [610 mm] on center and that affords a surface suitable to receive water-based texture and other decoration. This product is also suitable for use on interior walls.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

C11 Terminology Relating to Gypsum and Related Building Materials and Systems
C22/C22M Specification for Gypsum
C473 Test Methods for Physical Testing of Gypsum Panel Products
C645 Specification for Nonstructural Steel Framing Members
C840 Specification for Application and Finishing of Gypsum Board
C841 Specification for Installation of Interior Lathing and Furring
C844 Specification for Application of Gypsum Base to Receive Gypsum Veneer Plaster
C1264 Specification for Sampling, Inspection, Rejection, Certification, Packaging, Marking, Shipping, Handling, and Storage of Gypsum Panel Products
C1280 Specification for Application of Exterior Gypsum Panel Products for Use as Sheathing
E84 Test Method for Surface Burning Characteristics of Building Materials
E96/E96M Test Methods for Water Vapor Transmission of Materials
E119 Test Methods for Fire Tests of Building Construction and Materials

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Keywords

ceiling; coreboard; drywall; exterior gypsum soffit board; foil-backed; gypsum; gypsum backing board; gypsum base; gypsum board; gypsum ceiling board; gypsum coreboard; gypsum lath; gypsum sheathing; gypsum sheathing board; gypsum wallboard; laminated g