Should I DIY black mold from AC leak or call a pro?« Back to Previous Page

The size and location determine if this is DIY or requires a pro. For a small patch under 1 square foot on a non-porous surface like a skirting board, a careful DIY approach can be effective. However, given the leak is from an AC unit and the mold is on a structural element, a professional inspection is strongly advised to assess the full extent behind the wall.

For safe DIY: Isolate the area, wear an N95 mask and gloves. Scrub the visible mold on the skirting board with a mixture of detergent and water, then disinfect with a solution like white vinegar. The real fix is stopping the source—the AC leak must be repaired by a certified HVAC technician to prevent immediate recurrence.

In Dubai’s climate, with high humidity and continuous AC use, hidden mold growth inside walls or ductwork from a leak is a major concern. This hidden growth is what causes persistent earthy smells and can affect indoor air quality. A professional assessment, often involving moisture meters and possibly air or surface sampling, identifies the full scope. Remediation companies with microbiology lab capabilities can confirm the mold type and verify cleanup effectiveness with post-remediation testing, which is crucial for health assurance, especially in a bedroom. For anything beyond a very small, surface-level patch, calling a pro is the most effective and safest course of action.