What the sign can tell us
The room above is part of the investigation, but the darkest mark may be some distance from the source. Coordinated access helps connect the two.
Useful details to record
Note which fixtures were used beforehand and who can arrange access above.
Include your postcode, the affected place and any earlier investigation. A concise history helps distinguish a repeating pattern from a one-off observation.
Where an investigation may begin
Trace the source above the stain.
Ceiling leak detectionKeep the next step proportionate
A symptom alone does not identify a faulty pipe. Suitable investigation connects the observation with a cause before access or repair is proposed. If findings point outside plumbing, the recommendation should reflect that.
If water is actively escaping
For immediate danger, keep away from unsafe areas and use the appropriate emergency or urgent assistance service. Website enquiries do not dispatch emergency help or guarantee an attendance time.
Read the active-water guidance