Earthaus Tadelakt can be used in steam showers and steam rooms when installed over a substrate that complies with all applicable state and local building codes for steam enclosures. Proper substrate and waterproofing design are essential for performance, and these requirements vary by region and code authority.
General Considerations
Steam showers subject plaster finishes to high heat, vapor pressure, and continuous moisture exposure. Earthaus Tadelakt performs reliably in these environments only when installed over a substrate and waterproofing assembly designed for steam use.
Requirements:
The underlying system must be built in full compliance with local and national building codes for steam enclosures.
All substrate preparation, waterproofing, and vapor-proofing layers must be performed by qualified professionals.
The substrate must be dimensionally stable and rated for wet or steam applications.
Why it matters: Earthaus Tadelakt is a breathable lime plaster, not a vapor barrier. Its water resistance is achieved through the lime-soap reaction at the finish surface, not through impermeability. A properly designed substrate prevents vapor from accumulating behind the plaster, ensuring long-term stability.
Application Scope and Limitations
Earthaus does not specify or warrant any particular substrate or waterproofing system for steam enclosures.
The installer bears responsibility for ensuring that the entire assembly meets local codes and manufacturer requirements.
Earthaus Tadelakt should only be installed by experienced applicators familiar with high-humidity and steam-rated environments.
Questions? Email [email protected] or text 1-800-917-2414.