Shared supply leaking under a hallway of flats
The property
A Victorian town-centre house converted into four flats. One supply enters under the ground-floor hallway, then rises to each flat's own stop tap.
The problem
An owner found the hallway carpet damp near the stairs, and the building's water bill had jumped. No flat had a visible leak.
How we found it
Even with every flat's stop tap closed, the dial kept going, so the shared pipe was losing water. We emptied it and introduced tracer gas, which surfaced through the hallway floor by the stairs, where moisture readings peaked.
The outcome
We marked the spot by the stairs and photographed it. The managing agent received the report once paid, and the repair was priced separately.