How to permanently stop external wall mold in Dubai?« Back to Previous Page

Moisture seeping through external walls is a common issue in older Dubai villas, especially during high humidity periods. The most effective permanent fix involves addressing the root cause externally, not just cleaning the interior surface.

First, the external wall needs inspection for cracks or failed sealant. The area around that closet, likely on the ground floor, is susceptible to capillary rise of groundwater or driving rain. A professional should seal any cracks with hydraulic cement or a specialized waterproofing membrane from the outside. For a comprehensive barrier, an external waterproofing coating might be necessary.

Internally, wiping with bleach only removes surface discoloration; the mould roots (hyphae) remain in the plaster. Use a dedicated fungicidal cleaner designed for masonry, not bleach. After proper cleaning and allowing the wall to dry completely, applying a mould-resistant primer and paint can help deter regrowth.

Regarding health, prolonged exposure to any mould can irritate airways, potentially worsening allergies or asthma. Since you've noticed it, it's sensible to have an indoor air quality assessment. A lab analysis can identify the mould species, which determines the actual risk level. For a persistent dampness issue, a professional inspection is recommended to assess the wall's moisture content and the full extent of the problem, as hidden mould within the wall cavity is possible.