Black mold in closet making us sick: professional removal needed?« Back to Previous Page

The symptoms you describe, especially improving when you leave the home, strongly suggest the mold is the likely cause. In Dubai's climate, exterior walls are common condensation points where hidden mold thrives due to the extreme temperature differential between the air-conditioned interior and the hot, humid exterior.

For a patch smaller than one square meter, you can attempt cleaning with a vinegar or diluted bleach solution, but this only addresses the surface growth you can see. Given the location on an exterior wall and the accompanying health effects, the visible patch is likely just the tip of the iceberg, with mold proliferating inside the wall cavity. This requires professional remediation to be effective.

A reputable company will first conduct a proper inspection, often using a borescope to see inside the wall, to assess the full extent. The process involves containment of the area, HEPA-filtered air scrubbing to capture spores, safe removal of contaminated porous materials like drywall or insulation, and antimicrobial treatment of the structure. Crucially, they must identify and rectify the moisture source, which is typically condensation from thermal bridging or a minor leak.

For a case like yours with health impacts, hiring a professional is strongly advised. Look for a provider that follows IICRC S520 standards for mold remediation and can provide verifiable before-and-after air quality test results from an independent lab to confirm the spore count has been returned to safe levels. This is the only way to ensure the problem is resolved for good.