A downstairs client had lived with intermittent drips from the neighbour above for almost two years. The new owner upstairs inherited the problem after partial repairs had already been attempted.
Long-running neighbour leaks need patience and evidence. Otherwise, each repair attempt can become another round of frustration.
What was observed
Thermal observations showed wet signatures around the bathtub wall, entrance area and WC zone. Visual checks showed fresh sealant around the bath, but water appeared able to run from the side glass toward an under-grouted corner.
Acoustic activity was consistent with seepage around the bath or wet floor area, but the plumbing was old and the neighbour declined pressure testing.
The agreed test
Because pressure testing was not suitable, a colour flood test was set up:
- Green for the bathtub.
- Red for the basin.
- Yellow for the WC.
The aim was to reproduce the issue and identify which route appeared on the ceiling below.
The lesson
Older buildings do not always allow the easiest test. A professional inspection adapts the method to the property instead of forcing one tool onto every situation.
For similar cases, book bathroom leak detection or leak detection reports so the next repair decision is based on evidence.