Black spots behind sofa - leak or mold? First step?« Back to Previous Page

That's almost certainly mould, and your suspicion about a hidden leak is correct. In Marina apartments, this pattern behind furniture is commonly caused by condensation from exterior walls or a slow leak from internal pipes or the AC drainage system. The first step is to identify the moisture source; the mould is just the symptom.

Do not attempt to clean it yourself, as improper scrubbing can release a large number of spores. Your priority is to find a reputable inspector, not a generic contractor. Look for a specialist in indoor air quality or mould diagnostics who uses a thermal imaging camera and moisture meters to pinpoint the exact location and severity of the leak without destructive investigation. This is crucial to avoid unnecessary wall cutting.

A legitimate inspection will provide a detailed report identifying the moisture source and the mould genus present. In Dubai's climate, with high humidity and year-round AC use, the condensate drain line is a frequent culprit. The report is your evidence to present to your building management if the leak originates from a common area or pipe, as they are often responsible for repairs to the building envelope.

For the remediation itself, ensure any company you hire follows a containment protocol to prevent cross-contamination and verifies the results with post-remediation testing, not just a visual check. This scientific approach is the only way to ensure the issue is resolved properly.