If you're asking whether Earthaus Limewash can be used on exterior surfaces, it can — Earthaus Limewash is suitable for select exterior surfaces when applied over properly prepared, porous mineral substrates. However, exterior applications require special attention to weather exposure, moisture management, and freeze protection to ensure the Limewash remains durable and beautiful over time.
Approved Exterior Substrates
Earthaus Limewash is suitable for exterior use on:
Brick (unsealed, porous, or properly primed)
Stone (unsealed, porous, or properly primed)
Lime stucco or cement stucco (porous, unpainted)
Not recommended for:
Non-porous or sealed surfaces (painted, synthetic stucco, or acrylic coatings).
Horizontal surfaces, parapets, or landscape walls exposed to standing water.
Weather and Moisture Protection
Exterior Limewash finishes are breathable but not waterproof. Proper detailing is required to protect the finish from long-term moisture damage.
Best practices:
Roof overhangs: Help shield Limewashed walls from direct rainfall.
Rain gutters and flashing: Prevent water splash-up on lower walls.
Ground clearance: Maintain at least 2 ft. clearance from grade to prevent capillary wicking.
Avoid freeze-thaw exposure: Moisture absorbed into Limewash that freezes can cause spalling or surface erosion.
Environmental Limitations
Apply only when temperatures are above 50°F (10°C) and rising.
Do not apply during rain, high humidity, or direct sun exposure on hot surfaces.
Protect from rain for at least 24 hours after application.
Long-Term Maintenance
Limewash is self-aging — it gently patinas over time, developing a natural weathered character.
Reapplication may be required every 5–10 years, depending on exposure.
For localized repairs, lightly clean and apply fresh Limewash to affected areas.
Still Have Questions?
Email [email protected] or text 1-800-917-2414.