How to permanently prevent closet mold in humid weather?« Back to Previous Page

The black spots are likely mold growth fueled by high humidity and a cold surface—your closet's exterior wall is probably a "thermal bridge" where warm, humid air condenses. In Bur Dubai's older buildings, this is a common winter issue as the wall temperature drops but indoor humidity remains high from showers and cooking.

First, move all affected items to dry, sunlight-exposed areas to prevent further damage. Clean the closet interior with a vinegar or diluted bleach solution, but this is only a temporary fix.

The permanent solution requires controlling humidity and preventing condensation. Start by using a dehumidifier or running an AC unit in the room consistently, even in winter, to keep humidity below 60%. Ensure the room is well-ventilated; avoid completely sealing the closet door as this traps stagnant air. For the wall itself, improving insulation is key, but this may require building management approval.

For a persistent problem, a professional inspection is recommended to identify the specific moisture source. They can use thermal imaging to pinpoint the exact cold spots and humidity meters to verify the levels. In serious cases, applying an anti-mold coating or installing a moisture barrier behind the shelving can be a long-term solution, but these require correct installation to be effective.