How to treat black mold and prevent it returning?« Back to Previous Page

My kids have been coughing and I suspect it's because of the black spots I just found behind the wardrobe in our master bedroom. We've lived here for 2 years and just noticed it when I was rearranging furniture. The wall feels slightly damp to the touch, and I'm worried it's spreading. What's the most effective way to treat this myself and what kind of dehumidifier should I get to stop it from coming back?
Posted by Lauren Moore
Asked on April 19, 2026 8:55 am
Black mold growth behind furniture is common in Dubai due to high humidity and condensation from AC units. The damp wall suggests a moisture source, likely from condensation or a minor leak.

For a small area (under one square meter), you can clean it yourself. Wear an N95 mask, gloves, and goggles. Scrub the area with a mixture of detergent and water. Avoid bleach; it doesn't prevent regrowth and can damage porous surfaces like drywall. Dry the area completely with a fan after cleaning.

However, since the wall is damp and your children are symptomatic, a DIY approach may not address the root cause. The moisture could be inside the wall, and the visible spots might be a small part of a larger problem. Disturbing it can release spores.

The most effective prevention is controlling humidity. A desiccant dehumidifier is often more effective than refrigerant models in Dubai's climate, as it performs better in the high humidity levels common here. Aim to keep indoor relative humidity below 60%. Ensure your AC is serviced and draining properly, as faulty units are a frequent source of indoor moisture.

Given the health symptoms and hidden moisture, a professional inspection is strongly recommended. They can use moisture meters to find the source and assess if the wall cavity is affected, which requires specialized remediation to prevent it from returning. Verifiable lab testing can also identify the mold type, which is crucial for understanding potential health risks.
Posted by Sani Admin
Answered on April 20, 2026 1:41 am