Is black mold under flooring making my family sick?« Back to Previous Page

Black mold under bathroom flooring is a serious indoor air quality issue, especially in Dubai's climate. The high humidity and constant AC use create perfect conditions for mold growth, and your discovery suggests a moisture problem, likely from a slow leak or condensation under the vinyl. Given the location and your children's symptoms, this requires immediate professional attention.

Do not clean it yourself with bleach. Bleach only removes surface discoloration on non-porous materials and will not address the mold's root system growing in the flooring and subfloor. More importantly, disturbing it by pulling up flooring releases a concentrated cloud of spores directly into your living space, which your AC system can then circulate throughout the apartment.

The coughing is a legitimate concern. Exposure to elevated mold spores, particularly from types like Stachybotrys (often called "black mold"), commonly causes respiratory irritation, persistent coughs, and worsened allergy symptoms. For children, whose respiratory systems are still developing, the effects can be more pronounced.

You need a two-step approach. First, a professional mold inspection is critical to assess the full extent of the damage behind walls and under floors and to identify the moisture source. They will use moisture meters and often recommend air and surface sampling sent to an accredited microbiology lab to identify the spore types and concentrations. Second, proper remediation involves isolating the area, removing the contaminated materials safely, and using HEPA filtration to capture spores, followed by verifying the air quality is safe post-cleanup.

In the UAE, landlords are typically responsible for addressing structural leaks and resultant mold under flooring as it constitutes a habitability issue. Document everything with photos and notify them in writing, requesting a certified remediation company to handle it. Until it's resolved, keep the bathroom door closed and the exhaust fan running continuously to help contain the spread of spores.