How to fix AC leak and treat wall mold in Dubai?« Back to Previous Page

The black patches you've described are a classic indicator of mold growth, almost certainly caused by the AC condensate leak. In Dubai's high-humidity climate, a continuous moisture source like this creates an ideal environment for mold, particularly Aspergillus niger (common black mold), to colonize building materials rapidly.

Your first action must be to stop the moisture source. The AC leak requires immediate attention from a certified HVAC technician. Do not attempt to fix the refrigerant line yourself; this is regulated by UAE standards. You need a professional to diagnose the issue, which is likely a clogged condensate drain line, a damaged drain pan, or improper installation/insulation causing excessive condensation. They will clear the blockage, ensure proper drainage, and confirm the system is operating correctly to prevent recurrence.

For the mold, surface-level cleaning is a temporary measure. A bleach solution will remove the visible stain but will not address the hyphae (roots) that penetrate the porous wall material. Given the location behind a curtain, there is a high probability of more extensive growth. Disturbing it without proper containment can aerosolize spores throughout your villa.

For a proper and permanent resolution, a professional inspection is non-negotiable. Our certified mold inspectors at Saniservice use thermal imaging and moisture meters to determine the full extent of the water damage and hidden mold growth behind the wall. We then execute a controlled remediation process following industry best practices, including containment, air filtration, removal of affected materials, and application of EPA-approved antimicrobials to ensure the mold is eradicated at its source.

To properly diagnose the AC issue and the full scope of the mold problem, please contact our specialists for a comprehensive assessment. Call us at 800-MOLDS (800-66537) or email hello@saniservice.com.