How to remove and prevent black window mold in humidity?« Back to Previous Page

The black speckles are likely a surface mold, common on windows in Dubai due to the high outdoor humidity meeting the cold glass from your AC, creating condensation. Your husband's stuffy nose is a typical reaction to mold spores in the air.

For cleaning, wear a mask and gloves. Use a solution of white vinegar or a diluted bleach mix (1 part bleach to 10 parts water) and scrub the area. Dry it thoroughly immediately after. Do not just paint over it, as the mold will grow back.

To prevent recurrence, you must control the moisture. Wipe down the window frames and sills daily to remove any condensation that forms. Ensure your AC is set to a consistently cool temperature, as fluctuating settings cause more condensation. Check that the room is well-sealed to prevent humid outdoor air from leaking in.

Since this is in a bedroom and already affecting health, a professional inspection is wise to check for hidden moisture in the wall or behind the frame. In many Dubai villas, the problem originates from a small leak in the external sealant, which requires proper identification and repair. For persistent issues, a lab test can identify the mold type to confirm the health risk and ensure the cleaning method was effective.