A damp patch on the ceiling may come from a leaking pipe or failed waterproofing on the roof or bathroom floor. The fix is completely different: the first is plumbing, the second is waterproofing. Noting when the problem appears helps direct the inspection.
Clues pointing to a pipe leak
These are clues, not a diagnosis:
- Damp persists regardless of weather
- The water meter moves with taps closed
- The problem appears after using a specific bathroom or kitchen
- Sound of running water inside the wall
Clues pointing to waterproofing failure
Common clues:
- Stains appear or grow after rain
- Cracks or flaking in the roof layer
- Water pooling on the roof due to slope or drains
- Damp under an upstairs bathroom with no meter movement
Why the distinction matters
Repainting or renewing waterproofing while the source is a leaking pipe won't stop the problem, and vice versa. That's why we identify the source first, then recommend the right fix: plumbing, waterproofing or both.
This is general information, not a diagnosis of your home. To identify the cause, contact us to arrange an assessment.
Frequently asked questions
Can it be both at once?
Yes, a pipe leak and damaged waterproofing can coexist, which is why each possibility is checked before setting the scope.