Fastest, safest way to remove black mold from bathtub sealant?« Back to Previous Page

That black mold under the sealant is a common issue in Dubai's humidity and is very likely contributing to your family's symptoms. The fastest DIY method for a contained area is to carefully cut out all the contaminated silicone with a utility knife and thoroughly scrub the now-exposed tile joint with a dedicated mold remover, not just bleach. The underlying joint must be completely dry—use a fan heater for several hours—before applying a high-quality, mold-resistant silicone sealant.

However, given the symptoms you describe (persistent cough, headaches) and the fact you found a significant amount hidden, the safest approach is professional assessment. Disturbing extensive mold can aerosolize spores, worsening indoor air quality. In many Deira apartments, a leak behind the tiles could be feeding the growth, which DIY won't fix. A professional inspection can identify the moisture source, contain the area during removal to prevent cross-contamination, and verify with testing that the species is one of the common irritants, not something more hazardous. For recurrent problems, their documentation is also often required for building management disputes. The goal is to solve the root cause, not just the visible mold.