Black mold in bedroom closet: health risks and professional test?« Back to Previous Page

We've lived here for 2 years and just noticed a patch of black mold in the corner of our master bedroom closet, behind some storage boxes. It must have been growing slowly because the room has felt damp for a while, but we only found it today while deep cleaning. With the humidity lately, I'm worried it's spread behind the drywall. What are the actual health risks of this kind of mold exposure, and should we get a professional test done or just clean it ourselves immediately?
Posted by Richard Robinson
Asked on April 26, 2026 3:45 pm
Black mold in a bedroom closet is a health concern, primarily due to the constant exposure while sleeping. The risks range from allergic reactions like sneezing, congestion, and skin irritation to more severe respiratory issues, especially for infants, the elderly, or those with asthma or compromised immune systems. The damp feeling you've noticed confirms high humidity, which is the root cause.

In Dubai's climate, this is a common issue. Year-round AC use creates significant condensation, and closets are often poorly ventilated, creating a perfect breeding ground for mold. The concern that it may have spread behind the drywall is valid, as mold colonies can extend into wall cavities where moisture accumulates unseen.

For a patch discovered behind boxes, immediate action is needed. You can clean a small, visible area (under 1 square meter) yourself using a microfiber cloth and a solution of detergent and water. Never use bleach, as it only discolors the surface and does not kill the roots. However, given the duration of the issue and the dampness you describe, a professional inspection is strongly recommended. The mold you see is often just the fruiting body; the main colony could be hidden.

A professional assessment, often involving moisture meters and thermal imaging, can determine the extent of the problem behind the walls. For health certainty, a lab test can identify the exact species, which is critical for understanding the risk level and guiding the proper remediation protocol. This science-driven approach ensures the problem is solved at its source, not just cosmetically cleaned.
Posted by Sani Admin
Answered on April 27, 2026 1:09 am