How long does plaster take to dry before painting? | Checkatrade
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How long does plaster take to dry before painting?

How long does plaster take to dry before painting? It’s one of those questions that everyone has their own opinion on. And the more people you ask, the greater the variety of answers you’ll receive.

So let’s tell it like it is: How long must you wait before you can paint on freshly plastered walls?

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How long should I leave plaster to dry before painting?

If you’ve had your walls skimmed, the plaster will take less time to dry as it’s a thinner layer, whereas plastered walls take a little longer.

  • A skim coat: typically 3-7 days drying time
  • Plastered walls: anything up to around 4 weeks

Rather than waiting for a set timeframe, the best advice is to simply wait until your plaster is fully dry before painting.

Tip: Plaster will dry quicker with some heat in the room or if you open a window to provide better ventilation.

How do you know when plaster is completely dry?

You’ll know when plaster is fully dry because it will change colour from brown to an even, light pink colour. If you have a few dark spots, this indicates that the plaster is not yet fully dry. Wait until you have a consistent colour and appearance across all walls.

Don’t forget to apply a mist coat to your plastered walls once dry, before painting with your chosen emulsion. Follow our expert guide to painting on new plaster to nail your mist coat application.

What happens if you paint on slightly wet plaster?

While it can be frustrating waiting for plaster to dry so you can crack on with the painting, it really is worth being patient.

Plastering helps to create a smooth, even surface for your walls; painting on wet plaster risks ruining all your efforts.

If you apply paint to wet plaster it will not bond properly and will likely crack and peel off. Trust us, the effort involved in remedying this situation is far more frustrating than waiting for the plaster to dry in the first place.

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Prefer some expert help to get your freshly plastered walls painted? Find a professional painter and decorator using our leading directory. Simply add your postcode to the search box below to see who comes highly rated in your area.

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