ASTM C475-01

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, and paper joint tape.
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 which 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 inch-pound units are to be regarded as the standard.

General Information

• Status: Historical
• Publication Date: 09-Apr-2001
• 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 C475-94 - Standard Specification for Joint Compound and Joint Tape for Finishing Gypsum Board
• Effective Date: 10-Apr-2001
• Replaced By: ASTM C475/C475M-02 - Standard Specification for Joint Compound and Joint Tape for Finishing Gypsum Board
• Effective Date: 10-Dec-2002

Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 475 – 01
Standard Specification for
Joint Compound and Joint Tape for Finishing Gypsum
1
Board
This standard is issued under the fixed designation C 475; 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 4.3 Joint Tape:
7
4.3.1 Width—Shall be not less than 1 ⁄8 in. (47.6 mm) nor
1.1 This specification covers all-purpose, taping and finish-
1
more than 2 ⁄4 in. (57.2 mm). The width of an individual roll
ing joint compounds, and paper joint tape.
1
shall vary not more than 6 ⁄32 in. (0.8 mm).
1.2 This specification also covers the minimum require-
4.3.2 Thickness—Shall be not more than 0.012 in. (0.30
ments for an assembly of taping and all-purpose compound and
mm).
joint tape.
4.3.3 Tensile Strength—Shall be not less than 30 lbf/in. (524
1.3 The text of this specification references notes and
N/mm) in the cross direction.
footnotes which provide explanatory material. These notes and
4.3.4 Dimensional Stability—Shall expand not more than
footnotes (excluding those in tables and figures) shall not be
0.4 % lengthwise and not more than 2.5 % crosswise.
considered as requirements of the specification.
4.4 Assembly of Taping or All-Purpose Compound and Joint
1.4 The values stated in inch-pound units are to be regarded
Tape:
as the standard.
4.4.1 Bond between the joint tape and the joint compound
2. Referenced Documents shall be not less than 90 %.
4.4.2 Edge Cracking shall be not more than 10 % along the
2.1 ASTM Standards:
edges of the tape specimen.
C 11 Terminology Relating to Gypsum and Related Build-
2
ing Materials and Systems
5. Sampling
C 474 Test Methods for Joint Treatment Materials for Gyp-
2
5.1 Sampling of Joint Compound—At least 1 %, but not less
sum Board Construction
than one package or container shall be sampled and shall be so
3. Terminology
selected as to be representative of the shipment. The material
so obtained shall be thoroughly blended and divided. Provide
3.1 Definitions—Definitions shall be in accordance with
not less than one 6-lb (2.72-kg) sample for the test.
Terminology C 11.
5.2 Sampling of Joint Tape—At least one roll for every ten
3.2 Definitions of Terms Specific to This Standard:
cases or a fraction thereof, but not more than ten rolls per
3.2.1 joint-tape, n—a strip of paper reinforcing material
shipment shall constitute a sample.
designed to be embedded in the joint compound.
6. Inspection
4. Physical Properties
6.1 Inspection of the joint compound and joint tape shall be
4.1 General—The physical properties shall be determined
agreed upon between the purchaser and the supplier as part of
in accordance with Test Methods C 474.
the purchase agreement.
4.2 Joint Compounds.
4.2.1 Check Cracking—No cracks in the thinner half of the
7. Rejection
wedge and no deep fissure cracks in the thicker half of the
7.1 Rejection of joint compound and joint tape that fails to
wedge.
conform to requirements of this specification shall be reported
4.2.2 Putrefaction—No putrefaction in less than 4 days.
to the producer or supplier promptly and in writing. The notice
4.2.3 Shrinkage—Not more than 35 % by volume.
of rejection shall contain a statement documenting how the
joint compound or joint tape has failed to conform to the
1
This specification is under the jurisdiction of ASTM Committee C11 on
requirements of this specification.
Gypsum and Related Building Materials and Systems and is the direct responsibility
of Subcommittee C11.02 on Specifications and Test Methods for Accessories and
8. Certification
Related Products.
Current edition approved Aug. 10, 2001. Published August 2001. Originally
8.1 When specified in the purchase agreement, a producer’s
published as C 475 – 61 T. Last previous edition C 475 – 94.
or supplier’s report shall be furnished at the time of shipment
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Annual Book of ASTM Standards, Vol 04.01.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
C 475
certifying that the product is in compliance with this specifi- 9.2.4.1 The signal word panel shall contain the word“
cation. WARNING” in upper case letters, preceded by a safety alert
symbol consisting of an exclamation mark inside an equilateral
9. Packaging and Package Marking
triangle with the apex of the triangle oriented upward. The
9.1 Joint compound and jo
...