How to handle mold in Dubai?« Back to Previous Page

That black patch in your closet is a common issue in Dubai due to our high humidity, especially on exterior walls where condensation can form. While some small surface mold can be handled yourself, a spreading patch that has been growing for weeks indicates an ongoing moisture source that needs to be addressed.

You can clean a small area (under 1 square meter) with a vinegar solution or a specialized mold cleaner, not bleach. Bleach only removes surface discoloration and does not kill the roots; it can also add moisture. However, this is a temporary fix if the underlying cause remains. The wall likely has trapped moisture, possibly from a small leak or, more commonly, thermal bridging where the cold AC meets the humid outdoor air.

Given its location and persistence, a professional inspection is strongly recommended. They will use a moisture meter to find the source of the dampness within the wall cavity—something you cannot diagnose yourself. In many cases, the wall may need to be opened to dry properly and prevent structural damage. For verification, a lab test can identify the mold species, which is crucial if anyone in the household has respiratory sensitivities. Addressing the root cause is the only way to prevent it from returning.