Black mold on exterior wall: landlord or professional first?« Back to Previous Page

Contact your landlord first and immediately send them clear photos of the affected area. Under Dubai rental law (RERA), landlords are generally responsible for addressing structural issues like moisture penetration that lead to mold. The exterior wall location and recent heavy dew point directly to a condensation or water intrusion problem they must fix.

Do not attempt to clean it yourself, as improper handling can disperse harmful spores. A professional inspection is strongly recommended to assess the hidden extent of the damage and identify the moisture source. The inspector will use tools like a moisture meter behind the wardrobe and can provide a formal report for your landlord, which is often necessary to get the issue taken seriously.

In Dubai's climate, this is a common issue. The high humidity, especially at night, causes condensation on cooler exterior walls. Year-round AC use can create thermal bridges that exacerbate the problem. The remediation must include fixing the underlying moisture issue—such as improving insulation or sealing—before any mold is removed, or it will simply return.

For a proper remediation, the process should include containment of the area, HEPA-filtered air scrubbing, safe removal of affected materials, and application of EPA-approved antimicrobials. The final step should always be post-remediation verification (PRV) testing to confirm the spore count has returned to acceptable indoor levels. This scientific, evidence-based approach is the only way to ensure the problem is truly resolved.