Ceiling stain in a villa split into two flats
The property
A large railway-era house divided into two flats. The upper flat's bathroom sits directly above the lower flat's front room.
The problem
A brown patch on the ceiling below grew after every shower upstairs. The bath and tray had been resealed, yet it kept returning.
How we found it
After mapping the stain, we ran each upstairs fitting alone. Only the shower made the readings climb. A thermal image then showed warm water creeping behind the tiles from the joint above the valve.
The outcome
The joint was marked and photographed on the tiles. Only the tiles over it came off for the repair, quoted separately, and the freeholder shared our report with both flats.