How to treat closet mold and prevent AC recurrence?« Back to Previous Page

The black spots and damp smell are classic signs of a mould problem, almost certainly triggered by that recent humid spell. In Dubai's climate, high outdoor humidity causes condensation on cooler interior surfaces, like a closet's exterior wall, creating the perfect environment for mould.

For immediate treatment, wear an N95 mask and gloves. Wipe the affected wall with a solution of white vinegar or a dedicated mould remover. Do not use bleach, as it only removes the colour and does not kill the roots. Discard any heavily contaminated clothing or items. Thoroughly clean all other items in the closet with a suitable detergent and let them dry completely in the sun if possible.

To prevent recurrence, you must address the moisture source. This is almost always condensation due to a temperature differential. Your AC unit is likely a key contributor. Ensure it is set to a consistent temperature, ideally between 22-24°C, to avoid overcooling the space and creating extreme cold spots. Check that the closet is not blocked; leave space between the wall and your clothes and consider leaving the door ajar to improve air circulation. A small desiccant dehumidifier inside the closet can help manage residual moisture.

For a lasting solution, a professional inspection is recommended. The issue may be inadequate AC airflow to that room, a poorly insulated exterior wall (common in JVC apartments), or even a slight negative pressure in the apartment pulling humid air in. A certified inspector can use thermal imaging to identify the exact condensation points and an air quality test can confirm the mould type. Remediation should focus on fixing the underlying moisture issue, not just cleaning the visible mould.