Designation: C 475 – 94 Standard Specification for Joint Compound and Joint Tape for Finishing Gypsum Board1 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 This specification covers all-purpose, taping and finishing joint compounds, and paper joint tape | Designation C 475 94 Standard Specification for Joint Compound and Joint Tape for Finishing Gypsum Board1 This standard is issued under the fixed d ii r atic n 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 This specification covens all-purpose taping and finishing joint compounds and paper joint tape. This specification also covers the minhmim rcquirce ments for an assembly of taping and all-purpose compound and joint tape. The values stated in inch-pound units are to be regarded as the standard. 2. Referenced Documents ASTM Standards C 11 Terminology Relating to Gypsum and Related Building Materials and Systems2 C 474 Test Methods for Joint Treatment Materials for Gypsum Board Construction2 3. Terminology Definitions Definitions shall be in accordance with Terminology C 11. Deíiniúonn of Tews SpecificloThisSlandard joint-tape n a srrip of paper reinforcing míthỉr íll designed to be embedded in the joint compound. 4. Physical Properties General The physcciti pooperiies shall be detemimed in accordance with Test Methods C 474. Joint Compounds. Check Cracking No cracks m foe tlúnncr hair of foe wedge and no deep nssure cracks in the thicker half of the wedge. Putrefaction No pmrcraction fo Icss than 4 days. Shrinkage Not more than .35 by vofiimc. Joint Tape Width Shall be not Icss than 1 in. mm nor more than 2t3 in. mm . The width of an individual roll 1 This specincation is under the jurisdiction of ASTM Committee C-11 on Gypsum and Related Building Materials and Systems and is the direct responsibility of Subcommittee on Specifications and
