How to treat black mold in closet or call professional?« Back to Previous Page

The damp wall indicates an active moisture source, which must be resolved first. In Dubai’s climate, this is often due to a hidden AC condensation leak from a blocked drain line or a breach in the building’s external thermal envelope, allowing humid air to condense on cooler interior walls.

For a small patch (under one square meter), you can clean it yourself. Wear an N95 mask, gloves, and safety glasses. Scrub the area with a solution of detergent and water. Avoid bleach, as it doesn’t prevent regrowth. Dry the area completely with a fan after cleaning. However, this is a temporary fix if the moisture source remains.

You absolutely need a professional assessment. The wall feeling damp suggests the moisture is internal, and the mold growth behind the boxes is likely more extensive than what is visible. Remediation requires isolating the area, using HEPA filtration, and physically removing contaminated materials like drywall or insulation. In the UAE, reputable providers follow IICRC S520 standards for remediation and should provide before-and-after lab reports to verify the spore count has been returned to safe, ambient levels.

For a confirmed leak and growth of this size, a DIY approach risks spreading spores and failing to address the root cause, leading to rapid regrowth. A professional inspection will identify the exact moisture source and the full scope of contamination.