AC unit leak causing wall mold: DIY or professional?« Back to Previous Page

A leak of that duration with visible black spots spreading over two meters indicates a significant moisture issue, which in Dubai's climate almost certainly means active mold growth behind the wall. The damp smell confirms it's not just surface-level.

DIY cleaning spray is not advisable here. It will only remove surface discoloration on the wall, not the mold colony thriving within the gypsum board and insulation from the ongoing AC condensate leak. The leak must be repaired first; otherwise, the mold will return quickly. Attempting to clean it yourself can also aerosolize a high concentration of spores into your bedroom air.

For a case like this, a professional assessment is strongly recommended. The remediation scope isn't just the wall; it involves stopping the AC leak, removing the contaminated wall section, inspecting the cavity behind for further spread, and ensuring proper drying. Dubai's high humidity means materials dry slowly, requiring industrial equipment to prevent immediate regrowth.

Costs for professional remediation are variable. They depend heavily on the extent of hidden damage and the required containment measures. For a two-meter section, expect a range from a basic localized removal to a more involved process if the mold has penetrated deeply. Reputable companies provide detailed scopes and quotes after an on-site inspection. Always request that the final assessment includes verification, such as post-remediation testing or a moisture reading, to confirm the area is dry and clean.