1. Scope
1.1 This specification covers the gypsum boards described in 1.1.1-1.1.9.
Note 1-Specifications C 840, C 841, C 844 and C 1280 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.
1.2 Specifications applicable to all gypsum boards are located in Section 1-4
and 13-15. Specifications applicable to specific gypsum boards are located in
the following sections:
|
Section |
| Gypsum wallboard, predecorated gypsum board |
5 |
| Gypsum backing board, gypsum coreboard,gypsum shaftliner board |
6 |
| Water-resistant gypsum backing board |
7 |
| Exterior gypsum soffit board |
8 |
| Gypsum sheathing board |
9 |
| Gypsum base for veneer plaster |
10 |
| Gypsum lath |
11 |
| Gypsum Ceiling Board |
12 |
1.3 The values stated in either inch-pound units or SI (metric) are to be
regarded separately as standard. Within the text, the SI units are shown in
brackets. The values stated in each system shall be used independent of the
other. Values from the two systems shall not be combined.
