How to properly inspect for hidden mold in closet?« Back to Previous Page

A proper inspection for hidden mold in a closet, particularly in Dubai's climate, requires a methodical approach due to high humidity and constant AC use which can cause condensation on cold surfaces. Since you can't see it but have symptoms and a cold wall, the mold is likely behind the drywall or on the back of the closet itself.

Start with a thorough visual check. Remove everything from the closet. Use a bright flashlight to examine all surfaces, especially the back wall and corners, for any discoloration, water staining, or fuzzy growth. Pay close attention to the area where the cold wall is; this is a prime spot for condensation. Smell is a major indicator—that persistent damp smell is often the first sign of a hidden mold issue.

For a non-invasive check, a moisture meter is essential. This tool measures the moisture content within walls and building materials. Any reading significantly above 15-20% indicates a moisture problem that is likely supporting mold growth. You can purchase one or a professional inspector will use this as a standard tool.

Given the symptoms (stuffy nose, itchy eyes) and the inability to find a source, a professional inspection is strongly recommended. They will perform the above steps and often use a borescope to look inside walls through a small hole. The most definitive method is air and surface sampling, which is sent to an independent microbiology lab for analysis. This identifies the species and concentration, which is crucial for understanding health risks and planning remediation. In the UAE, reputable companies should provide a detailed report with lab results, not just a verbal opinion.

Until inspected, keep the closet empty and the bedroom well-ventilated to minimize exposure.