How to prevent black mold in a humid closet?« Back to Previous Page

Black specks reappearing in a closet on an interior wall is a classic sign of condensation due to high humidity, a common issue in Dubai villas. The wall is likely colder than the room's air, causing moisture to condense and create a perfect environment for mould.

Your long-term solution requires controlling the humidity at its source. First, improve air circulation inside the closet. Leave the doors slightly ajar and consider installing louvered doors or ventilation grilles to allow air from the room's AC to circulate. Using a small, rechargeable desiccant dehumidifier inside the closet can also help.

For the room itself, ensure your AC is running consistently and set to a temperature that minimizes the difference between the wall's cold surface and the ambient air. Check that no furniture is pushed tightly against the exterior walls, as this traps moisture. Using a hygrometer to monitor the room's humidity level is wise; you want to maintain it below 60%.

If the problem persists, the issue may be more systemic. A professional inspection can identify if there's a hidden leak in the plumbing or building envelope or if the AC system itself is contributing to the humidity imbalance by not effectively removing moisture from the air. In many cases, a certified mould assessment that includes moisture mapping is needed to find the core problem before remediation can be permanently successful.