AC and black mold: DIY fix or call a professional?« Back to Previous Page

The black patches from your AC leak are likely mold, and your scratchy throat is a common reaction. In Dubai's climate, constant AC use creates condensation, and any leak provides the persistent moisture mold needs to thrive.

For a small patch (under one square foot), a DIY approach can work if the moisture source is completely fixed. A vinegar solution is more effective than bleach on porous surfaces like drywall, as it can penetrate deeper to kill the roots. However, scrubbing can release a large number of spores, so proper PPE—an N95 mask, gloves, and goggles—is non-negotiable.

Given the location on a wall base, the water has likely wicked up behind the baseboard, and mold could be growing inside the wall cavity, completely out of sight. This hidden growth is the real risk and is impossible to address without professional-grade drying equipment and inspection tools.

Since your symptoms have appeared and the leak has been ongoing for weeks, a professional assessment is strongly recommended. They can use moisture meters and borescopes to see behind walls, confirm the full extent, and ensure it is remediated correctly according to Dubai Municipality guidelines for healthy indoor environments. This prevents it from simply returning.