Black mold from AC leak: how to handle myself?« Back to Previous Page

Stop using the AC unit immediately to prevent further moisture. The black spots indicate active mold growth, which means the wall and carpet are still wet inside. In Dubai's climate, drying what you see on the surface is never enough; hidden moisture in walls and under flooring will continue to feed the mold.

For a small area, wear an N95 mask and gloves. Mix a solution of one part detergent and ten parts water. Gently scrub the visible mold on the hard surface of the wall and wipe it away. Do not use bleach, as it doesn't kill the roots and can worsen indoor air quality. For the carpet, the backing and underlay are likely contaminated; professional cleaning or replacement is almost always necessary for porous materials.

Given the spread you describe, this is likely beyond a DIY fix. The leak's source must be identified and repaired by an HVAC technician first. Then, the affected drywall and insulation are probably compromised and require removal to properly address the hidden colony. Improper handling can aerosolize spores and spread the problem.

For a verified resolution, a professional inspection is advised. They use moisture meters to find the full extent of the damage and containment procedures to prevent cross-contamination. In many cases, a lab analysis is the only way to confirm the mold type and ensure the remediation was successful.