How to safely clean mold and check for moisture?« Back to Previous Page

That black fuzzy patch is likely Cladosporium or Aspergillus, common in Dubai due to high humidity condensing on cooler exterior walls. For a patch smaller than one square meter, you can clean it yourself safely.

Wear an N95 mask and gloves. Mix a solution of one part white vinegar to one part water, or use a diluted bleach solution (one cup bleach to one gallon of water). Scrub the area thoroughly, then dry it completely with a fan. Discard any porous materials like cardboard boxes that show mold growth. Your winter clothes should be professionally laundered or dry-cleaned.

The critical step is identifying and stopping the moisture source. That exterior wall likely has a thermal bridge or a minor leak, causing condensation inside the closet where air circulation is poor. This is a common issue here.

For a proper check, you need a professional inspection with a thermal imaging camera to pinpoint the condensation spot and a moisture meter to measure the wall's water content. Do not call a generic cleaner; seek a specialist in building envelope diagnostics. They can identify if the issue is inadequate insulation, a leaking pipe, or external water ingress. Resolving the moisture problem is the only way to prevent it from returning immediately after cleaning.