How to remove mold from closet and is it dangerous?« Back to Previous Page

That black spot pattern spreading from an exterior wall during a humid spell is a classic sign of condensation-related mold growth, very common in Dubai villas. The wall likely gets cold from AC, then meets warm, humid air, creating the damp surface mold needs.

For health, most closet molds like Cladosporium or common black molds are irritants, not extreme toxins. They can cause congestion, sneezing, or worsen allergies, especially for children or those with asthma. The main concern is the persistent exposure in a space like your bedroom.

To remove it for good, surface cleaning is just the first step. Start by wiping the area with a microfiber cloth and a solution of white vinegar or a dedicated mold-cleaning detergent. Wear an N95 mask and gloves during cleaning. However, if the mold returns quickly—which is likely given its location—the core issue is excess moisture in that wall cavity.

This is where DIY reaches its limit. In the UAE climate, a recurring mold problem on an exterior wall often indicates a need for professional assessment. The effective, long-term solution involves identifying and correcting the moisture source, which could be insufficient insulation, a tiny crack, or internal condensation. A proper inspection uses moisture meters and thermal imaging to find the exact cause. For confirmed growth behind walls, remediation by a certified company is the standard for a permanent fix, as they contain the area, remove affected materials safely, and apply antimicrobial treatments. After remediation, a post-clearance test from an independent lab is the only way to verify the mold has been successfully removed and the environment is safe.