Repainting will not solve dampness until pipe leaks, rain ingress, condensation, or rising damp are identified.
Common warning signs
Yellow stains, mould, odour, blistered paint, and persistently cool walls.
Likely causes
A concealed leak, facade crack, window ingress, or poor ventilation.
Safe inspection steps
- Turn off the nearby power or water supply and protect people and furniture.
- Record when the mark appears, the weather, and recent water use; the visible stain may not be the source.
- Check joints, drains, supply pipes, and adjacent rooms. Use moisture or pressure testing when needed.
Recommended repair
Stop the water, dry fully, remove loose material, treat mould, and restore a breathable finish.. Confirm the work area, materials, timing, and price before work. Test with water after completion and monitor nearby surfaces.
When to call immediately
Stop DIY work when water keeps dripping, finishes swell, mould spreads, or moisture is close to sockets or electrical panels. Phnom Penh humidity and heavy rain can make hidden damage grow quickly.