Can I remove black mold from my AC wall myself?« Back to Previous Page

A small, visible patch from a recent leak can sometimes be managed if you address the root cause and the area is less than about one square meter. However, the damp smell getting stronger suggests the moisture has penetrated the wall, and what you see is likely just the surface manifestation. In Dubai's high humidity, mould thrives inside wall cavities where you cannot reach it with surface cleaning.

Using supermarket bleach is not recommended. It is mostly water, which can feed mould roots deep in porous surfaces like drywall. Bleach also evaporates quickly and does not kill mould spores effectively; it merely bleaches the visible colour, making it look gone while the colony remains. The fumes can also be hazardous in an enclosed space.

The critical first step is stopping the AC leak completely. Until the source of moisture is repaired by an HVAC technician, any cleaning is temporary. For proper remediation, the affected drywall often needs to be cut out and replaced if the moisture saturation is deep, which is probable after two weeks.

Given the persistent damp smell, a professional inspection is strongly advised. They use moisture meters to assess the wall's internal dampness and can determine if the AC unit itself is contaminated, which is common with interior leaks. Reputable companies provide documentation showing the moisture levels before and after remediation, which is your proof the issue is resolved, not just hidden.