Damp wall with black spots: DIY clean or call professional?« Back to Previous Page

Black speckles on a damp wall in a Jumeirah villa are almost certainly mould, a common issue here after heavy rains due to trapped moisture and our high humidity levels year-round. The dampness behind the wardrobe suggests a persistent moisture problem that your AC alone cannot resolve.

For a small, surface-level patch (less than one square foot), a DIY clean with a detergent solution can be attempted, but bleach is not recommended—it doesn't kill the roots and can damage porous surfaces like drywall. However, the fact the wall feels damp indicates the moisture is likely inside the wall cavity, which you cannot access or clean yourself. This is a case for a professional inspection.

A certified inspector will use moisture meters and thermal imaging cameras to locate the exact source of the dampness—it could be a tiny leak from the rains, internal condensation from the AC, or a pipe seepage. They will then take air and surface samples for lab analysis to identify the mould species, which determines the appropriate remediation protocol. Simply cleaning the surface without addressing the hidden moisture and mould will lead to its rapid return. In Dubai's climate, this problem will only worsen without professional diagnosis.