PHTA-12 Standard for the Plastering of Swimming Pools and Spas

This standard addresses the cementitious interior finish of swimming pools, spas, and other aquatic facilities, both public and residential. This is an essential document for anyone developing specifications for swimming pools.

Federal, state, local, and international authorities, as well as industry members and consumers, recognize the need for modern, up-to-date standards governing the design, construction, alteration, repair, and maintenance of swimming pools, spas, hot tubs, and aquatic facilities and other water-containment vessels.

The PHTA-12 standard was designed to accomplish this need by standardizing the cementitious interior finish of swimming pools, spas, and other aquatic facilities, public and residential. It sets forth the identification and stipulation of non-structural cementitious finish coating materials for usage in plastering, the application and finishing methodologies based on common accepted trade practices, and the installation of non-structural cementitious interior finish coatings for in-ground swimming pools or other cementitious water-containment vessels.

This standard was recently revised!

Current Version: ANSI/PHTA/ICC/NPC-12 2025 American National Standard for the Plastering of Swimming Pools and Spas

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Questions? Contact standards@phta.org for more information.