Bath water reaching the flat below
The property
A let flat on the second floor of a block near the city centre, with concrete floors and a bathroom directly over the bedroom of the flat underneath.
The problem
Below, a brown ring on the bedroom ceiling grew after every bath upstairs. Fresh silicone round the bath, put on by a plumber, had not cured it.
How we found it
Moisture readings below put the wettest point under the plughole end. Upstairs, running the taps did nothing, but emptying a full bath wet the ceiling. Thermal imaging traced it to the joint on the bath's waste pipe.
The outcome
We marked and photographed the joint behind the bath panel, so the wall tiles stayed put. The agent sent our report to the landlord and to the downstairs owner.