Earthaus Bond Plaster is a pozzolanic hydraulic lime (PHL) plaster with added acrylic, formulated to adhere to substrates that are typically unsuitable for direct plaster application. Designed for both interior and exterior use, it combines the durability and breathability of PHL with the bonding strength of acrylic — creating a stable, long-lasting basecoat for Earthaus Plaster finishes while maintaining vapor permeability.

This article summarizes the official Earthaus Bond Plaster Product Data Sheet. Download the full Bond Plaster Product Data Sheet (PDF).

Coverage of 50–100 ft² per bag at a total thickness of 1/8–1/4 inch. Thickness depends on the substrate and use case.

For interior and exterior substrate compatibility, preparation, and application instructions, see the Bond Plaster Installation Guide.

Allow excess Bond Plaster to dry completely, then dispose of the dried plaster in the trash.

Hydrated lime is strongly alkaline and may cause severe injury on contact with eyes or skin; inhaling the dust can irritate the respiratory system. Wear appropriate PPE — eye protection, gloves, long sleeves, and a dust mask or respirator — and avoid skin/eye contact and prolonged dust inhalation. If it contacts your eyes, flush with plenty of water and seek medical attention immediately. For full handling, first-aid, and hazard information, see the Bond Plaster Safety Data Sheet (SDS) (PDF).

Performance depends on correct handling, preparation, and installation techniques. Earthaus does not assume responsibility for outcomes beyond its control.

Copyright 2025 Earthaus Plaster LLC.

Still have questions? Email support@earthausplaster.com or text 1-800-917-2414.