Repainting mould-affected walls and ceilings
Mould staining can damage the appearance of walls and ceilings, but paint is not a cure for an active moisture problem. The right sequence is to identify and address the cause, clean and dry the surface, prepare failed coatings, then repaint where suitable.
Where mould commonly appears
Mould staining is often seen on bathroom ceilings, bedrooms, external-wall corners, laundries, poorly ventilated rooms and surfaces affected by condensation or previous water ingress.
Before repainting
If moisture is still entering the surface from a leak, failed waterproofing, roof issue, plumbing fault or another building defect, that cause should be addressed first. Painting over active damp usually leads to repeat failure.
Cleaning and surface preparation
Once the cause has been dealt with and the surface is suitable for coating, the repaint scope may include cleaning, removal of loose or failed paint, minor filling, appropriate priming and repainting.
When another trade may be needed
Large, recurring or hidden mould problems, structural damp, water leaks or significant contaminated material can require assessment or remediation beyond a painter’s normal scope.
Repainting after water or mould damage
After the substrate is dry and stable, repainting can restore a uniform finish to affected walls and ceilings and blend repaired areas into the surrounding room.