How to permanently stop mold from returning in humid climate?« Back to Previous Page

The recurring mold indicates a persistent moisture source, likely condensation from thermal bridging or a small leak. In Dubai's humidity, simply cleaning the surface with bleach is a temporary fix as it doesn't address the root cause or the hyphae (roots) growing within the wall material.

First, identify the moisture source. For an external wall in Al Barsha, the most common culprits are condensation from the temperature difference between the air-conditioned room and the humid outside air, or water ingress from a poorly sealed window frame or crack. Check for any visible cracks or failed sealant on the exterior. Improving ventilation in the closet is critical; a small battery-operated dehumidifier or leaving the closet door ajar can help reduce stagnant, humid air.

The long-term solution involves correcting the building envelope issue. This may require professional assessment to determine if additional insulation is needed on the interior wall to prevent condensation (a thermal break) or if exterior waterproofing and sealing are necessary. For a persistent problem like this, a professional inspection is advised to accurately diagnose the source, as the mold growth inside the wall cavity is likely more extensive than what is visible on the surface. They can use moisture meters and thermal imaging to pinpoint the issue. After the moisture source is fixed, the affected wall material must be properly remediated to remove all fungal growth.