Ceiling stain below a shower in an old house
The property
An old house on one of Wendover's historic streets, with a shower room upstairs over the dining room. Its ceiling is lime plaster on timber laths.
The problem
A brown stain kept spreading across the dining room ceiling, worse after showers. The tiles had already been regrouted once, and the stain came back.
How we found it
The wettest readings sat near a beam, away from the tray. Running each fitting in turn traced the leak to the shower valve; thermal images agreed.
The outcome
One tile and the panel behind the valve came off at the marked spot. The joint was repaired for a separate price, and our report went with the owners' insurance claim.