Can Limewash Paint Be Used in Bathrooms? Moisture Facts

Limewash paint can be used on bathroom walls and ceilings away from direct water, and it handles steam well because it is breathable and resists mould. It should not be used inside showers, on tub surrounds or right behind a sink, where water would wash it away.

Why limewash copes with humidity

Limewash is vapour-open, so moisture can move through it instead of getting trapped. Lime is also strongly alkaline, which makes it hard for mould to grow. That is why it has been used in old bathrooms and cellars for a long time.

Where it works in a bathroom

• Walls outside the shower and away from the sink

• Ceilings, as long as the fan works

• Powder rooms

Where it does not work

• Inside showers and on tub surrounds

• Splash zones behind sinks and taps

• Any surface that gets wiped or scrubbed often

For those areas, use microcement or tile and keep limewash for the rest of the room.

Protecting limewash in a bathroom

Some limewash systems can take a breathable mineral sealer, which helps the surface shed splashes without trapping moisture. Ask for one that is compatible with the product.

Ventilation

Run the fan during and for 20 minutes after a shower. Limewash handles steam, but constant condensation running down walls will mark any finish.

Care

Do not scrub limewash. Blot splashes with a soft, damp cloth. Keep a little of the original batch for touch-ups.

Next step

Request a free quote and we will suggest how to split a bathroom between limewash and a wet-area finish.