Boiler losing pressure in a new-town semi
The property
A semi from the new-town years on a solid ground floor. Thin heating pipes run through the screed to radiators along the hall and lounge.
The problem
The pressure needed topping up every other day, though the boiler had passed its service. Nothing was damp; only the gauge kept falling.
How we found it
No sealant had gone in. With the downstairs circuit valved off the gauge held steady, pointing downstairs. Warmed up, the lounge floor showed a hot patch on camera, and a pressure test on that leg agreed.
The outcome
A small square of lounge floor was opened at our photographed mark, and the repair, quoted separately, put an end to the topping up.