Heating leak in a maisonette above shops
The property
A 1960s maisonette over a row of shops in the town centre. The floors are concrete, and the heating pipes to the lounge and kitchen radiators run in the screed.
The problem
The boiler needed topping up most days, and the shop below had a damp mark spreading across its ceiling. Nothing looked wet in the flat.
How we found it
With every radiator's valves closed, the pressure still fell, so the leak was in the floor pipes. A thermal scan of the warm floor found heat blooming near the lounge window, and tracer gas confirmed the point.
The outcome
We quoted the repair before opening up and did it while we were there, so the advance price held. The owner passed our report to the shop below.