Limewash Explained, and Which Walls Suit It
Limewash has become a look, which means it is now being brushed onto walls that should never have received it. This guide covers what it actually is, and just as usefully, where it is the wrong choice.
Where this works
- Lime plastered walls in period and listed homes
- Bedrooms, snugs and dining rooms wanting depth without sheen
- Masonry that needs to breathe after damp repair
- External render on rural and coastal buildings
- Hospitality interiors after a hand finished texture
How we install it
- 1Read the wall before you open a tin
Damp the wall and watch it. A thirsty lime plaster and a sealed gypsum skim need entirely different dilutions, and getting that wrong is why some limewash dusts off.
- 2Prime modern substrates
Mineral primer on plasterboard and gypsum. Skipping it saves an hour and costs you the whole wall, because there is nothing for the lime to bond into.
- 3Brush, do not roll
A wide block brush laid in a cross hatch is what creates the movement. Rolling flattens it into something that just looks like slightly patchy emulsion.
- 4Judge it cured, not wet
Wet limewash is dramatically darker. Colour is agreed on a cured sample panel on your own wall, viewed in both daylight and lamp light.
Common pitfalls we prevent
Frequently asked
What is the difference between limewash and chalk paint?+
Chalk effect emulsion is an acrylic film with a matting agent. Limewash is a mineral coating that carbonates into the wall surface and stays vapour open, which is why it belongs on lime plaster and old masonry.
How many coats does limewash need?+
Two for a light, cloudy wash. Three or four where you want depth and a more even field. Each coat also slightly lightens the overall read as it carbonates.
Can limewash go over painted walls?+
Only after abrading and applying a mineral primer, and you lose the breathability benefit because the old emulsion film is still there. On a period wall we would usually recommend removing the emulsion first.
Does limewash rub off?+
Under-bound or over-thinned limewash can dust. Correctly mixed and applied it does not, though it is still less rub resistant than emulsion, so hallways and stairwells get a mineral fixative.
Is limewash good in bathrooms?+
On walls away from direct water, yes, and its breathability suits a room that gets humid. Inside a shower it is the wrong product and we would specify tanked microcement or a wet area lime system instead.
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