Damp patch on wall
Photograph and monitor the patch, note weather/use conditions, and check nearby plumbing. Persistent or spreading damp needs diagnosis before decoration.
What to do first
- Check whether the issue is isolated or affects the whole home.
- Take photos and note any recent changes, work or weather.
- Stop DIY if the task involves regulated work, hidden services, height or a safety risk.
What could be behind it
- Condensation and poor ventilation
- Plumbing/roof leak
- Moisture entering through building fabric
These are common possibilities, not a diagnosis of your specific home.
When to stop doing it yourself
Stop if you are unsure of the cause, cannot isolate the system safely, need to open fixed electrical/gas equipment, work at height, disturb hidden building fabric, or the problem is getting worse.
QUOTE CHECK
Typical quote components
- Inspection
- Moisture testing
- Repair source
- Making good
- VAT
PARTS / TOOLS
Possible items involved
- Hygrometer
How to describe it to a professional
A damp patch has appeared on the wall.
NEXT STEP
Move from symptom to action.
Compare the right service, understand the quote and keep the completed work in My Home.