This article summarizes the official Earthaus Sand Plaster Product Data Sheet, adapted for clarity and ease of reference. To view the full document, see the Sand Plaster Product Data Sheet (PDF).
What Is Sand Plaster?
Earthaus Sand Plaster is an interior lime plaster formulated for a matte, granular texture. Made from 100% natural materials, it provides a breathable, durable, and eco-friendly finish. Sand Plaster offers excellent workability, strong adhesion to compatible substrates, and superior moisture management properties. It is well-suited for creating organic, timeless aesthetics on interior walls in residential, commercial, and heritage restoration projects.
Composition
Hydrated lime
Pumice aggregates
Cellulose binder
Packaging
Bag size: 32 lbs
Pallet quantity: 60 bags
Properties
100% natural materials
Zero VOCs or chemical additives
Durable, breathable, and mold-resistant
Absorbs CO₂ during curing, reverting to limestone
Usage
Designed for interior applications only, applied over:
Level-4 finished drywall
Painted walls
PHL Binder basecoats in the BUILD Interior Plaster Assembly
Installation
For drywall or painted walls: see the Sand Finish Application Guide.
For BUILD system use: see the BUILD Interior Finishes Guide.
Limitations
Not suitable for exterior use.
Not suitable for showers or wet applications.
Color
Standard: white with a light grey undertone.
Tinting: can be pigmented with Earthaus mineral pigment colors or universal colorants.
Applied Thickness & Coverage
Over drywall/painted surfaces: 100 ft² per 32 lb bag, applied in two 1/32" coats (total 1/16").
Over absorbent plaster basecoats: 50 ft² per 32 lb bag, applied in one 1/8" coat.
Sealing
Sealing is optional.
When sealed with Earthaus Olive Oil Soap Sealer, Sand Plaster becomes water-resistant yet vapor-permeable.
Storage
Mixed plaster: store covered at room temperature for up to 14 days. Remix before use.
Unmixed bags: store in dry conditions, low humidity, up to 1 year.
Disposal
Allow excess Sand Plaster to dry completely.
Dispose of dried plaster in household trash.
Safety Information
Hydrated lime is strongly alkaline and may cause severe injury on contact with eyes or skin. Inhalation of dust can irritate the respiratory system. Proper PPE is essential.
Required PPE: gloves, eye protection, long sleeves, dust mask or respirator.
Avoid: skin and eye contact, prolonged dust inhalation.
Emergency response:
Eyes: Flush with plenty of water; seek medical attention immediately.
Skin: Wash with water and mild soap; consult physician if irritation persists.
Inhalation: Move to fresh air; seek medical attention if symptoms persist.
Ingestion: Do not ingest; seek medical attention immediately.
Disclaimer
The performance and appearance of Sand Plaster depend on proper handling, preparation, and installation techniques, which are outside Earthaus's control. Earthaus does not assume responsibility for final outcomes.
© 2025 Earthaus Plaster LLC.
Still Have Questions?
Email support@earthausplaster.com or text 1-800-917-2414.