Is black mold causing symptoms and how to safely clean?« Back to Previous Page

It is very possible the mold is causing his symptoms. In Dubai's humid climate, AC units often create condensation that leads to damp walls, a perfect environment for mold. Common reactions to mold exposure include the exact symptoms you described: nasal congestion, sinus headaches, and general irritation, particularly upon waking.

For a small patch (less than one square meter), you can clean it yourself safely. First, isolate the area by closing the closet door and sealing the bottom with a towel. Wear an N95 mask, gloves, and safety glasses. Mix a solution of one part white vinegar to four parts water—avoid bleach, as it only removes the colour and can push spores deeper into porous surfaces like drywall. Lightly mist the moldy area to dampen it and prevent spores from becoming airborne, then scrub with a stiff-bristled brush. Wipe clean with a disposable cloth.

However, the dampness behind the wall is the core issue. Simply cleaning the surface is a temporary fix if the moisture source from the AC unit isn't addressed. The condensation line may be leaking or improperly insulated. For a recurring problem hidden inside a wall, a professional inspection is advised to locate and rectify the moisture source and assess if the mold has spread into the wall cavity, which is common here. They can also perform air and surface sampling to identify the mold type, which helps understand the potential health risk.