Underfloor loop failing in a newer detached house
The property
A detached house on a newer estate, with underfloor heating under the tiled ground floor. Six loops run from a manifold beside the washing machine.
The problem
Every couple of days the boiler wanted refilling, yet nothing was damp. When the heating ran, a faint warm strip appeared across the kitchen tiles.
How we found it
The manifold was dry. We closed the loops one at a time, and only the kitchen loop lost pressure. When it was warm, the camera showed heat spreading sideways, and tracer gas pinned the point.
The outcome
One tile and the screed beneath were opened at the mark and the loop repaired, quoted separately. The report went into the house papers.