How can I permanently fix damp wall causing mold?« Back to Previous Page

The damp wall and recurring mold point to a persistent moisture source, not just surface condensation. In Dubai's climate, this is most commonly caused by thermal bridging, where the cold from the AC unit's duct or pipe inside the wall cools the surface enough for humid air to condense on it continuously.

First, identify the source. A professional inspection with a thermal imaging camera can pinpoint the exact cold spot and moisture penetration path, which is crucial for a permanent fix. The solution often involves addressing insulation. For thermal bridging, injecting insulation into the wall cavity or applying internal insulating board can break the cold transfer. If the dampness is from a tiny leak in a pipe or a crack in the external wall (common in villas from settlement), that must be sealed from the outside to prevent water ingress.

Simply cleaning the AC unit doesn't resolve this; the issue is the wall's construction interacting with the indoor climate. After the root cause is fixed, the affected wall section must be properly treated. This involves removing the mold-infested plasterboard, treating the cavity with antimicrobial solutions, and replastering with mold-resistant materials before repainting.

Given the health symptoms you describe, a lab test to identify the mold species is advisable to understand the potential irritants. The Dubai Municipality has guidelines on indoor air quality, and remediation should align with these standards to ensure the problem is resolved comprehensively, not just cosmetically.