AC mold spreading, DIY fix or call pro in Dubai?« Back to Previous Page

That black spot returning darker after vinegar is a clear sign of active mold growth, not just surface staining. In Dubai's high humidity, a leaking AC unit creates a constant moisture source, which mold thrives on. The wall cavity behind the unit is likely saturated.

For a spreading issue like this, a DIY approach is not recommended. Vinegar or common cleaners only address the visible surface and can push spores deeper. The moisture source (the AC leak) must be repaired first; otherwise, the mold will return. The hidden damage inside the wall is the primary concern.

You should call a professional. Dubai Municipality guidelines and best practices require containing the affected area to prevent spores from spreading to other parts of your apartment during remediation. A proper job involves removing the contaminated section of drywall, treating the cavity, and ensuring the structure is completely dry before repairs. This process requires specialized equipment like HEPA air scrubbers and containment barriers.

The cost for remediation is driven by the extent of the damage, not just the visible spot. A small, contained job is typically more affordable, but pricing can vary significantly between companies based on their methods and certifications. You should request an on-site assessment for an accurate scope and quote. Look for providers who can explain the process clearly and offer post-remediation verification, such as a lab test, to confirm the space is safe.