ASTM C1396/C1396M-00
(Specification)Standard Specification for Gypsum Board
Standard Specification for Gypsum Board
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.
Note 2—The terms backing board and coreboard refer to different end uses. The term gypsum backing board, as used in this specification shall include gypsum coreboard 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 recieve 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:
SectionGypsum wallboard, predecorated gypsum board5Gypsum backing board, gypsum coreboard6gypsum shaftliner board Water-resistant gypsum backing board7Exterior gypsum soffit board8Gypsum sheathing board9Gypsum base for veneer plaster10Gypsum lath11Gypsum Ceiling Board12
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.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 1396 / C 1396M – 00
Standard Specification for
Gypsum Board
This standard is issued under the fixed designation C 1396 / C 1396M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope
Exterior gypsum soffit board 8
Gypsum sheathing board 9
1.1 This specification covers the gypsum boards described
Gypsum base for veneer plaster 10
in 1.1.1-1.1.9.
Gypsum lath 11
Gypsum Ceiling Board 12
1.1.1 Gypsum wallboard, designed for use on walls, ceil-
ings, or partitions and that affords a surface suitable to receive
1.3 The values stated in either inch-pound units or SI
decoration.
(metric) are to be regarded separately as standard. Within the
1.1.2 Predecorated gypsum board, designed for use as the
text, the SI units are shown in brackets. The values stated in
finished surfacing for walls, ceilings, or partitions.
each system shall be used independent of the other. Values
1.1.3 Gypsum backing board and coreboard, designed for
from the two systems shall not be combined.
use as a base in multilayer systems or as a gypsum stud or core
2. Referenced Documents
in semisolid or solid gypsum board partitions.
2.1 ASTM Standards:
NOTE 1—The terms backing board and coreboard refer to different end
C 11 Terminology Relating to Gypsum and Related Build-
uses. The term gypsum backing board, as used in this specification shall
include gypsum coreboard unless otherwise stated. ing Materials and Systems
C 473 Test Methods for Physical Testing of Gypsum Panel
1.1.4 Water-resistant gypsum backing board, designed pri-
Products
marily to be used as a base for the application of ceramic or
C 645 Specification for Nonstructural Steel Framing Mem-
plastic tile on walls or ceilings. This product is also suitable for
bers
decoration.
C 1264/C 1264M Specification for Sampling, Inspection,
1.1.5 Exterior gypsum soffıt board, designed for use on
Rejection, Certification, Packaging, Marking, Shipping,
exterior soffits and carport ceilings that are completely pro-
Handling, and Storage of Gypsum Board
tected from contact with liquid water.
E 84 Test Method for Surface Burning Characteristics of
1.1.6 Gypsum sheathing board, designed for use as sheath-
Building Materials
ing on buildings.
E 96 Test Methods for Water Vapor Transmission of Mate-
1.1.7 Gypsum base for veneer plaster, designed for use as a
rials
base for the application of gypsum veneer plaster.
E 119 Test Methods for Fire Tests of Building Construction
1.1.8 Gypsum lath, designed for use as a base for the
and Materials
application of gypsum plaster.
1.1.9 Gypsum ceiling board, designed for use on interior
3. Terminology
ceilings with framing spaced not more than 24 in. [610 mm] on
3.1 Definitions used in this specification shall be in accor-
center and that affords a surface suitable to recieve water-based
dance with Terminology C 11.
texture and other decoration. This product is also suitable for
3.2 Definitions of Terms Specific to This Standard:
use on interior walls.
3.2.1 decorative coating, n—a paint or other liquid material
1.2 Specifications applicable to all gypsum boards are
with or without aggregate.
located in Section 1-4 and 13-15. Specifications applicable to
3.2.2 decorative sheet or film, n—a plastic film, either
specific gypsum boards are located in the following sections:
backed or unbacked; plastic sheet; or combination of these.
Section
3.2.3 edge, n—the bound edge as manufactured.
Gypsum wallboard, predecorated gypsum board 5
1 5
Gypsum backing board, gypsum coreboard 6
3.2.4 gypsum backing board, n—a ⁄4 to ⁄8-in. [6.4 to 15.9-
Water-resistant gypsum backing board 7
mm] gypsum board used as a backing for gypsum wallboard,
acoustical tile, or other dry cladding.
3.2.5 gypsum coreboard, n—a ⁄4 to 1-in. [19.0 to 25.4-mm]
This specification is under the jurisdiction of ASTM Committee C11 on
Gypsum and Related Building Materials and Systems and is the direct responsibility
of Subcommittee C11.01 on Specifications and Test Methods for Gypsum Products. Annual Book of ASTM Standards, Vol 04.01.
Current edition approved Nov. 10, 2000. Published November 2000. Originally Annual Book of ASTM Standards, Vol 04.07.
e1 4
published as C 1396/C 1396M – 98. Last previous edition C 1396/C 1396M – 99 . Annual Book of ASTM Standards, Vol 04.06.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
C 1396 / C 1396M
gypsum board used as a gypsum stud or core in semisolid or 4.4 Gypsum wallboard, gypsum backing board, exterior
solid gypsum board partitions. gypsum soffit board, and gypsum ceiling board shall have a
flame spread index of not more than 25 when tested in
4. Materials and Manufacture
accordance with Test Method E 84.
4.5 Physical Properties, Dimensions, and Permissible
4.1 Gypsum board shall consist of a noncombustible core,
Variations of Gypsum Board:
essentially gypsum, surfaced with paper bonded to the core.
4.1.1 Gypsum sheathing board shall consist of a noncom- 4.5.1 Specimens shall be taken from the samples obtained in
bustible core, essentially gypsum, surfaced on both the face accordance with Specification C 1264/C 1264M.
and back with water-repellant paper bonded to the core.
4.5.1.1 Specimens shall be tested in accordance with Test
4.1.1.1 Water-resistant core (core treated) gypsum sheathing
Methods C 473.
board shall have a water-resistant material incorporated in the
4.5.2 Core, End, and Edge Hardness—The specimens shall
core.
have an average hardness of not less than 15 lbf [67 N] when
4.1.2 Gypsum coreboard shall be either a single board or
tested by Method A and 11 lbf [49 N] when tested by Method
composed of two factory-laminated gypsum boards to provide
B.
up to 1 in. [25.4 mm] total nominal thickness.
4.5.3 Edges and Ends—The edges and ends of gypsum
4.1.3 Water-resistant gypsum backing board shall consist of
board shall be straight and solid.
a noncombustible water-resistant core, essentially gypsum,
4.5.4 Length—The permissible variation in length shall be
surfaced on both the back and face with water-repellant paper
6 ⁄4 in. [66 mm].
bonded to the core.
4.5.5 Tapered Edge Depth—The average thickness of the
4.1.4 Predecorated gypsum board shall consist of a noncom-
edge of recessed or tapered edge gypsum board shall be not
bustible core, essentially gypsum, surfaced with paper bonded
less than 0.020 in. [0.38 mm] but not more than 0.090 in. [1.90
to the core with the face covered with a decorative sheet, film,
mm] less than the average thickness of the gypsum board.
or coating.
4.1.4.1 Class I predecorated gypsum board shall have a
5. Gypsum Wallboard and Predecorated Gypsum Board
decorative sheet or film laminated to the face.
5.1 Physical Properties of Gypsum Wallboard and Predeco-
4.1.4.2 Class II predecorated gypsum board shall have a
rated Gypsum Board:
decorative coating applied to the face.
5.1.1 Flexural Strength—The specimens shall be tested face
4.2 The back surface of foil-backed gypsum board shall in
up and face down. The average breaking load shall be not less
addition be covered with aluminum foil.
than the following:
4.3 Gypsum Board, Type X (Special Fire-Resistant):
4.3.1 Gypsum Board, Type X, designated gypsum board, Method A Method B
Method A Method B
Bearing Edges Bearing Edges
except gypsum lath, complying with this specification that
Thickness, Bearing Edges Bearing Edges
Perpendicular Perpendicular
in. [mm] Parallel to Panel Parallel to Panel
provides not less than 1 h fire-resistance for boards ⁄8 in. [15.9
to Panel Length, to Panel Length,
Length, lbf [N] Length, lbf [N]
3 1
lbf [N] lbf [N]
mm] thick or ⁄4 h fire-resistance for boards ⁄2 in. [12.7 mm]
thick, applied parallel with and on each side of load bearing 2
⁄4 [6.4] 50 [222] 20 [89] 46 [205] 16 [71]
by 4 wood studs spaced 16 in. [406 mm] on centers with 6d 5
⁄16 [7.9] 65 [289] 25 [111] 62 [276] 21 [93]
⁄8 [9.5] 80 [356] 30 [133] 77 [343] 26 [116]
coated nails, 1 ⁄8 in. [48 mm] long, 0.0915-in. [2.3-mm]
⁄2 [12.7] 110 [489] 40 [178] 107 [476] 36 [160]
diameter shank, ⁄4-in. [6.4-mm] diameter heads, spaced 7 in.
⁄8 [15.9] 150 [667] 50 [222] 147 [654] 46 [205]
[178 mm] on centers with gypsum board joints staggered 16 in. 3
⁄4 [19.0] 170 [756] 60 [267] 167 [743] 56 [249]
[406 mm] on each side of the partition and tested in accordance
5.1.2 Humidified Deflection—The specimens shall have an
with Test Methods E 119.
average deflection of not more than the following:
4.3.2 Gypsum Lath, type X designates gypsum lath com-
Thickness, Deflection,
plying with this specification that provides not less than a 1-h
in. [mm] eighths of an inch [mm]
fire-resistance classification for gypsum lath ⁄8 in. [9.5 mm]
thick, when applied at right angles to and on each side of ⁄4 [6.4] not applicable
⁄16 [7.9] not applicable
loadbearing 2 3 4 wood studs spaced 16 in. [406 mm] on
⁄8 [9.5] 15 [48]
centers with blue lath nails spaced 5 in. [127 mm] on centers
⁄2 [12.7] 10 [32]
1 5
over which is applied ⁄2 in. [12.7 mm] 1:2 gypsum sand plaster ⁄8 [15.9] 5 [16]
⁄4 [19.0] 5 [16]
and tested in accordance with the requirements of Test Method
E 119.
5.1.3 Nail Pull Resistance—The specimens shall have an
average nail-pull resistance of not less than the following:
NOTE 2—The definitions for type X given in 4.3.1 and 4.3.2 are
intended only as a test to define the gypsum board as meeting the Thickness, Method A, Method B,
in. [mm] lbf [N] lbf [N]
requirements for type X. These tests are neither intended to indicate a
preferred application nor to limit the use of the product in other
⁄4 [6.4] 40 [178] 36 [160]
fire-resistance rated assemblies.
⁄16 [7.9] 50 [222] 46 [205]
NOTE 3—Consult producers for independent test data on assembly 3
⁄8 [9.5] 60 [267] 56 [249]
details and fire-resistance classifications for other types of construction. ⁄2 [12.7] 80 [356] 77 [343]
⁄8 [15.9] 90 [400] 87 [387]
See official fire test reports for assembly particulars, materials, and
⁄4 [19.0] 100 [445] 97 [432]
classifications.
C 1396 / C 1396M
5.1.4 Foil-Backed Gypsum Wallboard and Foil-Backed Pre-
in. [mm] lbf [N] lbf [N]
decorated Gypsum Board:
⁄4 [6.4] 40 [178] 36 [160]
5.1.4.1 Foil-backed gypsum wallboard and foil-backed pre-
⁄8 [9.5] 60 [267] 56 [249]
decorated gypsum board shall meet all of the requirements for
⁄2 [12.7] 80 [356] 77 [343]
⁄8 [15.9] 90 [400] 87 [387]
gypsum wallboard and predecorated gypsum board.
⁄4 [19.0] not required not required
5.1.4.2 When tested in accordance with Test Methods E 96,
1 [25.4] not required not required
the permeance of foil-backed gypsum wallboard and foil-
6.1.4 Foil-Backed Gypsum Backing Board and Foil-Backed
backed predecorated gypsum board shall be not more than 0.30
Gypsum Coreboard:
perm [17 ng/Pa·s·m ] (Desiccant Method) for the condition of
6.1.4.1 Foil-backed gypsum backing board and foil-backed
50 % relative humidity on the face of the board, and 0 %
gypsum coreboard shall meet all of the requirements for
relative humidity on the back (foil-covered) side of the board.
gypsum backing board and gypsum coreboard.
5.2 Dimensions and Permissible Variations of Gypsum
6.1.4.2 When tested in accordance with Test Methods E 96,
Wallboard and Predecorated Gypsum Board:
5.2.1 Thickness—The nominal thickness shall be the permeance of foil-backed gypsum backing board and
1 3
foil-backed gypsum coreboard shall be not more than 0.30
from ⁄4 to ⁄4 in. [6.4 to 19.0 mm] with permissible variations
perm [17 ng/Pa·s·m ] (Desiccant Method) for the condition of
in the thickness of 6 ⁄64 in. [60.4 mm], and with permissible
50 % relative humidity on the face of the board, and 0 %
local variations of6 ⁄32 in. [60.8 mm].
relative humidity on the back (foil-covered) side of the board.
5.2.2 Width—The width shall be up to 48 in. [1220 mm],
with widths up to 54 in. [1370 mm] permitted, with a 6.2 Dimensions and Permissible Variations of Gypsum
permissible variation of ⁄32 in. [3 mm] under the specified
Backing Board and Gypsum Coreboard:
width.
6.2.1 Thickness—The nominal thickness shall be from ⁄4 to
5.2.3 End Squareness—Corners shall be square with a
1 in. [6.4 to 25.4 mm] with permissible variations in the
permissible variation of 6 ⁄8 in. [63 mm] in the full width of
thickness of 6 ⁄32 in. [60.8 mm], and with permissible local
the board.
variations of 6 ⁄16 in. [61.6 mm].
5.3 Edges:
6.2.2 Width—The width shall be from 16 to 48 in. [406 to
5.3.1 Edges of gypsum wallboard shall be either square,
1220 mm] with a permissible variation of ⁄8 in. [3.2 mm]
recessed, beveled, featured, tapered, or featured and tapered.
under the specified width.
5.3.2 Edges of predecorated gypsum board shall be either
6.2.3 End Squareness—Corners shall be square with a
square or featured.
permissible variation of 6 ⁄8 in. [63 mm] in the full width of
the board.
6. Gypsum Backing Board and Gypsum Coreboard
6.3 Edges—Edges shall be either square, round, V-tongue
6.1 Physical Properties of Gypsum Backing Board and
and groove, or featured.
Gypsum Coreboard:
6.1.1 Flexural Strength—The specimens shall be tested face 7. Water-Resistant Gypsum Backing Board
up and face down. The average breaking load shall be not less
7.1 Physical Properties of Water-Resistant Gypsum Backing
than the following:
Board:
Method A Method B
Method A Method B
7.1.1 Flexural Strength—The specimens shall be tested face
Bearing Edges Bearing Edges
Thickness, Bearing Edges Bearing Edges
Perpendicular Perpendicular up and face down. The average breaking load shall be not less
in. [mm] Parallel to Panel Parallel to Panel
to Panel Length, to Panel Length,
than the following:
Length, lbf [N] Length, lbf [N]
lbf [N] lbf [N]
Method A Method B
Method A Method B
1 Bearing Edges Bearing Edges
⁄4 [6.4] 50 [222] 20 [89] 46 [205] 16 [71]
Thickness, Bearing Edges Bearing Edges
3 Perpendicular Perpendicular
⁄8 [9.5] 80 [356] 30 [133] 77 [343] 26 [116]
in. [mm] Parallel to Panel Parallel to Panel
1 to Panel Length, to Panel Length,
⁄2 [12.7] 110 [489] 40 [178] 107 [476] 36 [160]
Length, lbf [N] Length, lbf [N]
5 lbf [N] lbf [N]
⁄8 [15.9] 140 [622] 50 [222] 137 [609] 46 [205]
⁄4 [19.0] 170 [756] 60 [267] 167 [743] 56 [249]
⁄2 [12.7] 110 [489] 40 [178] 107 [476] 36 [160]
1 [25.4] 230 [1023] 80 [356] 228 [1014] 77 [343]
⁄8 [15.9] 150 [667] 50 [222] 147 [654] 46 [205]
6.1.2 Humidified Deflection—The specimens shall have an
7.1.2 Humidified Deflection—The specimens shall have an
average deflection of not more than the following:
average deflection of
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.