ASTM C475/C475M-02

Standard Specification for Joint Compound and Joint Tape for Finishing Gypsum Board

SCOPE
1.1 This specification covers all-purpose, taping and finishing joint compounds, paper joint tape and glass-mesh joint tape.
1.1.1 The joint materials used in this standard are designed to be used with gypsum board installed in accordance with Specification C 840.
1.2 This specification also covers the minimum requirements for an assembly of taping and all-purpose compound and joint tape.
1.3 The text of this specification references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification.
1.4 The values stated in either inch-pound or SI (metric) units are to be regarded separately as standard. Within the text, the SI units are shown in parentheses. The values stated in each system shall be used independent of the other. Values from the two systems shall not be combined.

General Information

• Status: Historical
• Publication Date: 09-Dec-2002
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C11 - Gypsum and Related Building Materials and Systems
• Drafting Committee: C11.02 - Specifications and Test Methods for Accessories and Related Products

Relations

• Replaces: ASTM C475-01 - Standard Specification for Joint Compound and Joint Tape for Finishing Gypsum Board
• Effective Date: 10-Dec-2002
• Replaced By: ASTM C475/C475M-02(2007) - Standard Specification for Joint Compound and Joint Tape for Finishing Gypsum Board
• Effective Date: 01-Jun-2007
• Referred By: ASTM C1047-19 - Standard Specification for Accessories for Gypsum Wallboard and Gypsum Veneer Base
• Effective Date: 10-Dec-2002
• Referred By: ASTM C840-20 - Standard Specification for Application and Finishing of Gypsum Board
• Effective Date: 10-Dec-2002
• Referred By: ASTM C645-18 - Standard Specification for Nonstructural Steel Framing Members
• Effective Date: 10-Dec-2002
• Referred By: ASTM C1921/C1921M-22 - Standard Test Method for Comparative Impact Testing of Gypsum Panel Outside 90° Corner Systems
• Effective Date: 10-Dec-2002
• Referred By: ASTM E2634-18(2022) - Standard Specification for Flat Wall Insulating Concrete Form (ICF) Systems
• Effective Date: 10-Dec-2002
• Referred By: ASTM C1002-22 - Standard Specification for Steel Self-Piercing Tapping Screws for Application of Gypsum Panel Products or Metal Plaster Bases to Wood Studs or Steel Studs
• Effective Date: 10-Dec-2002
• Referred By: ASTM C11-23 - Standard Terminology Relating to Gypsum and Related Building Materials and Systems
• Effective Date: 10-Dec-2002
• Referred By: ASTM C474-15(2020) - Standard Test Methods for Joint Treatment Materials for Gypsum Board Construction
• Effective Date: 10-Dec-2002

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: C 475/C 475M – 02
Standard Specification for
Joint Compound and Joint Tape for Finishing Gypsum
1
Board
This standard is issued under the fixed designation C 475/C 475M; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope * F 1615 Specification for Cautionary Labeling for Five-
5
Gallon Open-Head Plastic Containers
1.1 This specification covers all-purpose, taping and finish-
ing joint compounds, paper joint tape and glass-mesh joint
3. Terminology
tape.
3.1 Definitions—Definitions shall be in accordance with
1.1.1 The joint materials used in this standard are designed
Terminology C 11.
to be used with gypsum board installed in accordance with
3.2 Definitions of Terms Specific to This Standard:
Specification C 840.
3.2.1 glass-mesh joint-tape, n—a strip of multidirectional
1.2 This specification also covers the minimum require-
glass yarn material designed to reinforce the joint between two
mentsforanassemblyoftapingandall-purposecompoundand
gypsum boards.
joint tape.
3.2.2 joint tape, n—a strip of material used to conceal and
1.3 The text of this specification references notes and
reinforce the joint between two gypsum boards.
footnotes that provide explanatory material. These notes and
3.2.3 joint tape, self-adhering, n—a joint tape manufactured
footnotes (excluding those in tables and figures) shall not be
to adhere directly to the substrate.
considered as requirements of the specification.
3.2.3.1 Discussion—Tapes having this quality do not re-
1.4 The values stated in either inch-pound or SI (metric)
quire mechanical or embedment means of attachment to the
units are to be regarded separately as standard. Within the text,
substrate.
the SI units are shown in parentheses.The values stated in each
3.2.4 paper joint tape, n—a strip of paper reinforcing
system shall be used independent of the other. Values from the
materialdesignedtobeembeddedinthejointcompoundandto
two systems shall not be combined.
reinforce the joint between two gypsum boards.
2. Referenced Documents 3.2.5 skewness, n—as defined in Terminology D 123.
2.1 ASTM Standards:
4. Physical Properties
C 11 Terminology Relating to Gypsum and Related Build-
2 4.1 General—The physical properties shall be determined
ing Materials and Systems
in accordance with Test Methods C 474, except as noted.
C 474 Test Methods for Joint Treatment Materials for Gyp-
2 4.2 Joint Compounds.
sum Board Construction
4.2.1 Check Cracking—No cracks in the thinner half of the
C 840 Specification for Application and Finishing of Gyp-
2 wedge and no deep fissure cracks in the thicker half of the
sum Board
3 wedge.
D 123 Terminology Relating to Textiles
4.2.2 Putrefaction—No putrefaction in less than 4 days.
D 3882 Test Method for Bow and Skew in Woven and
4 4.2.3 Shrinkage—Not more than 35 % by volume.
Knitted Fabrics
4.3 Joint Tape—The following tests are required of all joint
tape:
7
1
4.3.1 Width—Shall be not less than 1 ⁄8 in. (48 mm) nor
This specification is under the jurisdiction of ASTM Committee C11 on
1
Gypsum and Related Building Materials and Systems and is the direct responsibility more than 2 ⁄4 in. (60 mm). The width of an individual roll
of Subcommittee C11.02 on Specifications and Test Methods for Accessories and 1
shall vary not more than 6 ⁄32 in. (1 mm).
Related Products.
4.3.2 Thickness—Shall be not more than 0.012 in. (0.30
Current edition approved Dec. 10, 2002. Published February 2003. Originally
mm).
approved in 1961. Last previous edition approved in 2001 as C 475 – 01.
2
Annual Book of ASTM Standards, Vol 04.01.
3
Annual Book of ASTM Standards, Vol 07.01.
4 5
Annual Book of ASTM Standards, Vol 07.02. Annual Book of ASTM Standards, Vol 15.07.
*A Summary of Changes section appears at the end of this standard.
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C 475/C 475M – 02
4.3.3 Tensile Strength—Shall be not less than 30 lbf/in. 7. Rejection
(5.25 N/mm) in the cross direction.
7.1 Rejection of joint compound and joint tape that fails to
4.4 The following tests are required of paper joint tape:
conform to requirements of this specification shall be reported
4.4.1 Dimensional Stability—Shall expand not more than
to the producer or supplier promptly and in writing. The notice
0.4 % lengthwise and not more than 2.5 % crosswise.
of rejection shall contain a statement documenting how the
4.4.2 Assembly of Taping or All-Purpose Compound an
...