Flat ceiling stain from the dishwasher feed upstairs
The property
A second floor flat in a purpose-built block near the edge of the city, with concrete floors between flats and a managing agent running the building.
The problem
A damp patch on the kitchen ceiling kept widening. The owner upstairs had seen nothing wet, and the agent wanted to know whose pipe it was before anyone paid for a repair.
How we found it
Readings below placed the damp under the upstairs kitchen. With the agent arranging access, we pressure tested the sink, dishwasher and washing machine feeds in turn; only the dishwasher feed dropped, and moisture readings at the plinth agreed.
The outcome
The joint behind the upstairs units was marked and photographed. Both flat owners and the agent received the written report, so everyone worked from the same evidence when the repair was arranged.