Black mold in closet: DIY or professional?« Back to Previous Page

The appearance of black mold in a closet is common here, especially during humid periods when condensation can form on cooler walls, even with AC running. The first step is to determine the extent. Move everything out and inspect the area thoroughly.

For a small patch (under one square meter) on a non-porous surface like painted drywall, a DIY approach may be sufficient. Wear an N95 mask and gloves. Scrub with a mixture of detergent and water, not bleach, as bleach doesn't prevent regrowth and can damage materials. Dry the area completely with a fan. However, since this appeared behind boxes and has spread, there's a high chance the moisture source is embedded, or the mold has penetrated the wall.

Given the climate and the fact it's in your bedroom, a professional inspection is strongly advised for two reasons. First, they can identify the exact species, as some types common in the UAE require specific handling. Second, and more critically, they will use moisture meters to find the source of the water—often a small leak in the AC condensate line or insulation issues within the wall that cause condensation. Simply cleaning the surface without addressing this will result in immediate regrowth. A proper remediation company will contain the area, remove affected porous materials like drywall or insulation if necessary, and treat the area with EPA-approved antimicrobials to prevent recurrence. For health safety and a permanent solution, an assessment is the wisest first move.