Damp closet with black spots: DIY or call a pro?« Back to Previous Page

Given the conditions you've described – a damp closet on an outside wall with visible black spots in Dubai's extreme humidity – this is a situation that warrants immediate and serious attention. That damp feeling and the spots on your jackets are classic indicators of a mold colony beginning to form, likely due to a combination of high ambient humidity and a potential thermal bridge or minor condensation issue on that outside wall.

While a vinegar solution can kill surface mold on non-porous materials, it is ineffective on porous items like textiles and drywall, and it does not address the underlying moisture source. A small dehumidifier is a good preventative tool but is a reactive, not curative, measure for an active problem.

In the UAE, the primary cause is almost always excess moisture. The "AC running constantly" is a key detail; if the unit is undersized, not draining properly, or not effectively dehumidifying the air, it can contribute to the problem instead of solving it. The outside wall is a major red flag for potential insulation issues.

My strong recommendation is to call in a professional for an inspection. Disturbing the mold yourself can aerosolize spores and spread the contamination. We use specialized tools like thermal imaging cameras to identify hidden moisture pockets and borescopes to look inside walls. This is crucial to find the true source and ensure the remediation is permanent, not just superficial.

For a proper assessment and to prevent it from coming back, please call our team at 800-MOLDS (800-66537) or email hello@saniservice.com. Let us identify the root cause and provide a targeted solution.