AC leak causing black mold: DIY fix or call Dubai pro?« Back to Previous Page

A dinner plate-sized patch from an AC leak is a significant growth that warrants a professional assessment, especially in Dubai's humidity. The visible mold is only part of the issue; the leak's source must be identified and repaired, or the mold will return quickly.

While a bleach solution can remove surface discoloration on non-porous materials, it is ineffective on porous surfaces like drywall or plaster, which is likely behind your AC unit. Bleach cannot penetrate to kill the roots and its high water content can actually feed further mold growth deeper within the wall. For a patch that large and given its cause, the wall cavity itself is likely compromised.

In Dubai, this scenario is common due to condensation from AC units working overtime. A proper remediation involves isolating the area, removing the affected section of wall, treating the cavity, and ensuring the AC drain line and drip pan are cleared and functioning to prevent immediate recurrence. The Dubai Municipality has guidelines for indoor air quality, and a professional service will follow protocols to contain spores during removal.

Given the size, the link to an ongoing water source, and the potential for hidden damage, this is not a DIY project. You should request an inspection from a certified mold remediation provider who can also diagnose the AC fault. They should provide a scope of work and be able to verify the results with post-remediation testing.