How to moisture-proof a closet in Dubai?« Back to Previous Page

The black spots are likely mold growth caused by condensation on your closet's exterior wall, a common issue in Dubai during the cooler, humid winter months. The wall temperature drops, and when humid indoor air enters the closet, it condenses on the cooler surface, creating the damp environment mold needs.

To stop this permanently, you must control both humidity and temperature. First, improve air circulation inside the closet. Leave the door ajar for several hours each day to allow room air to circulate. For a more permanent solution, a small, battery-operated dehumidifier or moisture absorber box placed inside the closet can help. For built-in closets, a professional can sometimes install a small, discreet ventilation grille in the door or the wall shared with the room to promote passive airflow.

Next, address the temperature differential. Ensure your apartment's AC is running consistently, even in winter, as it dehumidifies the air. Do not turn it off completely. Keep the closet away from exterior walls if possible, or consider adding insulation to the interior back wall of the closet to reduce the cold surface where condensation forms.

Before implementing these solutions, have the mold properly identified. While often a surface mold, the species matters for health and cleanup protocol. A professional inspection can pinpoint the moisture source and species. For a closet on an exterior wall, it is also prudent to rule out a hidden leak from faulty external sealing, which is a building-level issue your management may need to address.