How to remove black mold in Dubai or call a pro?« Back to Previous Page

That black patch and strong musty smell indicate active growth, likely due to condensation on the exterior wall from our high humidity meeting cold AC air. The wall's temperature is below the dew point, creating a perfect damp environment for mold.

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 mixture of detergent and water, then wipe with a diluted bleach solution (one part bleach to ten parts water). Ensure the room is well-ventilated during the process. The key is to dry the area completely and quickly after cleaning; use a fan or dehumidifier to prevent immediate regrowth.

However, if the mold returns quickly, the patch is larger than one square meter, or the musty smell persists after cleaning, the moisture source is likely inside the wall. This is the point to call a professional. DIY methods only address surface mold, and hidden growth within the wall cavity will continue to release spores and odors. A professional inspection, often involving moisture meters and borescopes, can identify the hidden extent and the precise condensation issue. Remediation then involves correcting the insulation or vapor barrier on the cold wall and safely removing the contaminated materials. For persistent, large, or hidden mold, a professional assessment is necessary to resolve it completely.