How to remove black mold on wall in Dubai villa?« Back to Previous Page

Black mold on an exterior wall in a Dubai villa is almost certainly due to condensation from thermal bridging. The wall gets cold from year-round AC, and the intense outdoor humidity condenses on the cooler interior surface behind the furniture, creating a perfect environment for mold.

For a small area (less than one square meter), you can handle it yourself. Move the wardrobe away from the wall to allow air circulation. Wear an N95 mask, gloves, and eye protection. Scrub the area with a mixture of detergent and water; avoid bleach as it doesn't prevent regrowth. After cleaning, let the wall dry completely. A dehumidifier in the room can help maintain lower humidity levels and prevent it from returning.

However, since it's spreading and located on an exterior wall, this indicates a persistent moisture issue. In this climate, DIY cleaning often only addresses the surface problem, and the mold will likely return. A professional inspection is recommended to identify the root cause, such as insufficient insulation or a breach in the vapor barrier. They can use moisture meters to assess the wall's saturation and recommend permanent solutions. For verifiable results, the company should provide before-and-after surface or air quality testing from an accredited lab to confirm the mold has been properly remediated and the moisture source resolved.