2023年3月22日 · Standard Specification for Application of Portland Cement-Based Plaster. This specification covers the standard requirements for the application of full thickness Portland cement-based plaster for exterior (stucco) and interior work. It also sets forth tables for proportioning of various plaster mixes and plaster thickness.

This standard is issued under the fixed designation C926; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.

Specification covering the standard requirements for application of full thickness Portland cement-based plaster for exterior (stucco) and interior work. This standard was produced in the year 2022, and is available for preview and purchase at the reference link.

This standard is issued under the fixed designation C926; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.

1 This specification is under the jurisdiction of ASTM Committee C11 on Gypsum and Related Building Materials and Systems and is the direct responsibility of Subcommittee C11.03 on Specifications for Application of Gypsum and Other Products on Assemblies. Current edition approved June 1, 2006. Published June 2006. Originally approved in 1981.

Revision of C926-24 Standard Specification for Application of Portland Cement-Based Plaster. During the September 2024 SWG meeting, it was explained that the horizontal thickness requirements for three-coat work over lath was originally developed and intended for open stud framing construction.