How long before you can paint new plaster?

Wait until the plaster has changed from dark pink to a uniform pale pink or beige — typically 1–2 weeks — then apply a watered-down mist coat before the first full coat.

• ✓ Painting too early traps moisture and causes the paint to flake.
• ✓ Dark patches mean it is still wet; wait longer.
• ✓ Use a 50/50 emulsion-and-water mist coat first.

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