ASTM C475 / C475M

This specification covers all-purpose, taping and finishing joint compounds, paper joint tape and glass-mesh joint tape. No cracks in the thinner half of the wedge and no deep fissure cracks in the thicker half of the wedge. Other physical properties such as putrefaction, shrinkage, joint tape, width, thickness and tensile strength shall also be determined. Tests such as dimensional stability test, assembly of taping or all-purpose compound and joint-tape test, bond test, edge cracking test, and skewness test are required for paper joint-tape.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. 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.

2. Referenced Documents

ASTM Standards
C11 Terminology Relating to Gypsum and Related Building Materials and Systems
C474 Test Methods for Joint Treatment Materials for Gypsum Board Construction
C840 Specification for Application and Finishing of Gypsum Board
D123 Terminology Relating to Textiles
D3382 Test Methods for Measurement of Energy and Integrated Charge Transfer Due to Partial Discharges (Corona) Using Bridge Techniques
F1615 Specification for Cautionary Labeling for Five-Gallon Open-Head Plastic Containers

Index Terms

all-purpose compound; bond; check cracking; dimensional stability; edge cracking; finishing compound; glass-mesh joint tape; joint compound; joint tape; paper joint tape; putrefaction; shrinkage; taping compound; tensile strength; topping compound; ICS Number Code 91.100.10 (Cement. Gypsum. Lime. Mortar)

Citing ASTM Standards

[Back to Top]