Basement flooding can have more than one cause. In this Sliema maisonette, the immediate flooding had to be investigated separately from a longer-standing rainwater ingress problem.
The Problem
The client had water entering a basement lounge area. A visual inspection and thermal leak detection helped identify the most affected zone and connect it to a common area above the property.
Because the water was not limited to a small damp patch, the inspection needed to look beyond the damaged room and follow the building layout.
Acoustic Checks In The Common Area
Acoustic testing indicated a strong leak signature from the main supply serving the apartment block. The evidence pointed to a ruptured pipe linked to the Water Services Corporation supply route, with water entering the foundations and contributing to the basement flooding.
The water supply was shut off and WSC was contacted for the emergency repair. In apartment blocks, this type of finding needs clear communication because the leak can affect more than one property.
A Separate Rainwater Issue
The client also reported an older issue that appeared during rain. False gypsum walls and ventilation had previously been used to manage the visible symptoms, but they had not removed the cause.
A coloured water test on the rainwater drain produced coloured water from the walls. This suggested a separate rainwater ingress path, possibly connected to a neighbouring rainwater drain or a pipe route near the common area.
Why This Case Matters
The important lesson is that not every wet wall has one simple cause. A burst main, a rainwater drain defect and moisture trapped behind finishes can all overlap.
For complex blocks and shared spaces, our apartment block leak detection service combines pipe tracing, thermal checks, acoustic testing and written findings. If you need an inspection for a similar issue, start with water leak detection in Malta before opening floors or walls unnecessarily.
Where a record is required for neighbours, administrators or insurance discussions, we can also prepare leak detection reports.