How to permanently stop mold on a damp interior wall?« Back to Previous Page
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My kids have been coughing and I suspect it might be from black mold in their bedroom. We've lived here for 2 years and just noticed a patch of it behind the wardrobe on the wall facing Deira, which always feels a bit damp. I’ve cleaned it with bleach but I’m worried it will just come back.
What’s the most effective long-term solution to stop the mold from returning on this interior wall?
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The dampness behind the wardrobe is the core issue. In Dubai, interior walls facing the sea, like in Deira, are prone to condensation from the high humidity and constant AC use, creating a perfect environment for mold. Bleach only removes surface discoloration; it doesn't address the moisture or the mold roots deep in the porous wall material.
First, move the wardrobe away from the wall to allow air circulation. The wall must be completely dry before any remediation. Use a dehumidifier in the room for several days to actively pull moisture from the air and the wall structure. For a permanent fix, identify the moisture source. It's likely interstitial condensation from the temperature differential between the humid outdoor air and the cooled interior wall. A professional inspection can confirm this with a thermal imaging camera and moisture meter. The long-term solution involves rectifying the building envelope. This often requires improving the wall's insulation to bring its temperature above the dew point, preventing condensation from forming in the first place. Once the moisture issue is resolved, the affected area must be properly remediated: physically removing the contaminated porous material (drywall/plaster) and treating the area with an antimicrobial coating designed for masonry. Simply repainting will guarantee its return. For health concerns with children, a lab test to identify the mold species is advisable to understand the potential risk. |
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