Do you need a sealer at all?
Mineral finishes are breathable, and that is a large part of their value. Dry interior walls in limewash or lime plaster are usually best left unsealed. Seal where the surface will see water, grease or wear: kitchens, bathrooms, splash zones, counters, floors and exposed exterior walls.
Always let the finish cure fully before sealing. Lime keeps hardening for weeks; as a rule, wait until the surface is completely dry and even in colour.
Choosing the right sealer
- VG sealant 1:8: a light, breathable vegetable-based sealer. Good for walls that need a little protection without changing the look.
- VG sealant 1:4: the same sealer at a stronger mix, for walls that get touched or splashed more often.
- VG + soap sealant: the traditional choice for lime in bathrooms. It leaves a soft, water-resistant sheen.
- Wax sealant: deepens the colour and adds a soft, protective sheen. Good for polished plaster and furniture surfaces.
- Linseed oil: a natural oil that protects and enriches the surface. It darkens the tone slightly.
- EP sealant and bio epoxy: durable sealers for microcement, floors, counters and other high-traffic or wet surfaces.
Not sure which sealer suits your finish and room? Send us a photo and we'll recommend one before you order.
How to apply a sealer
- Test on a small hidden area first. Some sealers darken or add sheen.
- Make sure the surface is clean, dry and dust-free.
- Apply a thin, even coat with a soft brush, cloth or small roller. Thin coats penetrate and look natural; heavy coats can leave a film or blotches.
- Wipe off any excess that hasn't soaked in after a few minutes, if the product label says to.
- Let it dry fully, then add a second coat in wet areas. Follow the drying times on the label.
Everyday care
- Dust walls with a soft dry brush or cloth.
- Clean sealed surfaces with a damp cloth and a little mild, pH-neutral soap. Avoid bleach, acids, vinegar and abrasive cleaners. They attack lime.
- Wipe up oil, wine and coffee spills quickly, especially on counters.
- Re-apply wax or oil when water stops beading on the surface. On counters that may be every few months; on walls it can be years.
Touching up marks
One advantage of mineral finishes is that they can be repaired. Small marks on limewash can often be lightly misted and brushed over with the same limewash. On plaster, a fine sanding pad and a thin skim of the same material blends small damage. Keep a little of your original material for touch-ups.
For larger repairs, crack repairs or work around new sockets and pipes, our team offers fixed-price touch-up services, from ฿200 per spot.
