Thin heating pipe leaking under a terrace living room
The property
A terrace from the town's expansion on a concrete floor, with heating pipes little thicker than a pencil running through it to each downstairs radiator.
The problem
Every two or three days the boiler wanted more water. Carpets were dry, nothing smelled damp, and the boiler engineer found no fault.
How we found it
Nobody had used sealer. Valving off the downstairs radiators steadied the gauge. Once the heating was on, the thermal camera found heat spreading by the front wall; tracer gas confirmed it.
The outcome
The owner accepted our repair quote, so the concrete was opened over the mark and nowhere else, and we mended the pipe that visit.