Is black mold causing our sickness and safe to remove?« Back to Previous Page

Black mold under bathroom sealant can definitely cause the symptoms you're describing, especially in a poorly ventilated space. The persistent cough and headaches are common reactions to mold spores, particularly in enclosed humid environments like windowless bathrooms. Dubai's high humidity creates ideal conditions for mold growth behind surfaces where condensation accumulates.

For a small visible patch (under 1 square foot), you can clean it yourself with a vinegar solution or commercial mold remover, but you must wear an N95 mask and gloves. However, since the mold is already under the sealant and your family is experiencing symptoms, the underlying moisture issue is likely more extensive. Simply cleaning the surface won't address mold growing within the walls or behind tiles.

The weak exhaust fan is a critical problem. Dubai Municipality standards require adequate ventilation to prevent moisture buildup. You should upgrade to a fan with higher extraction capacity (measured in CFM) and ensure it runs during and for 20 minutes after showers.

Given the health symptoms and concealed mold growth, professional assessment is recommended. Remediation involves removing contaminated sealant and materials, treating the underlying structure, and identifying the moisture source. A company with microbiological testing can identify the mold species and verify cleanup effectiveness through post-remediation testing, which is crucial for ensuring the problem is fully resolved and not just hidden.