THE MOULDCARE JOURNAL
4 MINUTE GUIDEWhy mould returns after you paint over it
Paint can hide a stain for a short time. It cannot remove active growth, dry a wet surface or repair the moisture route behind the problem.
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The stain is a symptom
Visible mould grows where moisture and suitable material meet. Painting changes the colour of the surface, but it does not explain whether the moisture comes from condensation, a leak, water entry or a cold area with limited airflow.
Why the new coating can fail
If active growth, loose paint, contamination or excess moisture remains, a new coating may discolour, blister, peel or allow mould to reappear. Preparation and drying matter as much as the finish coat.
The responsible order of work
OREA works in a clear sequence: consider the likely cause, assess the quoted surface, treat it appropriately, allow suitable drying, repair sound surfaces, apply compatible primer or stain blocker where needed, and then decorate.
When a coating can help
A suitable anti-mould or condensation-resistant coating may support a complete system in the right room. It is not a substitute for repairing leaks, improving failed extraction or addressing another continuing moisture source.
Your next step
Send one close-up and one wider room photograph. Tell us when the mould first appeared, whether windows collect condensation and whether it returned after previous cleaning or painting.