Meter creeping in a house with underfloor heating
The property
A detached house a few years old, with tiled underfloor heating downstairs. Its cold water pipe crosses the same screed from a front door stop tap to the kitchen.
The problem
The water company's readings showed water passing nonstop, even late at night. Nothing was damp, and the boiler pressure held.
How we found it
Shutting that stop tap stopped the meter, which put the leak under the floor. With the heating off so its warmth hid nothing, tracer gas surfaced at a grout line, and the ground microphone agreed.
The outcome
We marked a spot no wider than one tile and photographed it. The repair, quoted separately, meant lifting a few tiles, with the heating loops beside it left in place.