Shower valve leak above a lounge
The property
A newer detached house with its en suite above the lounge and plastic pipes running through the joists to the shower valve.
The problem
A brown patch on the lounge ceiling grew after every shower. The tray had been resealed already, and still the patch kept coming back.
How we found it
Moisture readings peaked under the wall holding the valve. With the shower running hot, thermal imaging showed warmth spreading in that wall, and the hot pipe to the valve lost pressure when tested.
The outcome
The joint behind the valve was marked and photographed, so one small panel came off and the tray and tiles stayed put. The repair was quoted separately.