Pressure loss in a large detached house
The property
A detached house on a lane outside the village, with radiators on three floors and the heating split into two zones, upstairs and downstairs.
The problem
The boiler needed topping up every three or four days. A heating engineer had checked it and found nothing wrong, and no damp showed anywhere.
How we found it
No sealer had been added. Testing each zone alone showed only upstairs losing pressure. Thermal images then found a warm line across a spare room ceiling, and tracer gas confirmed it.
The outcome
The spot beside a ceiling joist was marked and photographed. The joint was repaired at a price agreed beforehand, and the report went to the owners' insurer.