ASTM C475/C475M-17 (R2022) PDF Download

The ASTM C475/C475M-17 (R2022) standard covers the requirements for all-purpose, taping and finishing joint compounds, paper joint tape, and glass-mesh joint tape. The joint materials specified in this standard are intended for use with gypsum board installations in accordance with Specification C840.

The standard also includes the minimum requirements for an assembly of taping and all-purpose compound combined with joint tape. It provides information on the physical properties of these joint materials, such as putrefaction, shrinkage, joint tape width, thickness, and tensile strength.

The specification includes various tests that need to be conducted, including dimensional stability test, assembly of taping or all-purpose compound and joint-tape test, bond test, edge cracking test, and skewness test for paper joint tape.

It is important to note that the notes and footnotes in the specification provide explanatory material and should not be considered as requirements. The standard allows for measurements to be stated in either inch-pound or SI units, with values from the two systems to be used independently and not combined.