Mold under shower sealant: professional treatment or DIY bleach?« Back to Previous Page

Bathroom mold under silicone sealant is extremely common in Dubai due to the high humidity and condensation from year-round AC use. The musty smell confirms active microbial growth.

For a small, visible patch you've just discovered, a thorough DIY approach can be effective. Bleach is not the best solution; it only removes surface discoloration and can worsen indoor air quality. Instead, use a dedicated, non-bleach mold remover. The critical step is to completely remove the old, contaminated silicone sealant with a utility knife, let the area dry fully for 24-48 hours using a dehumidifier or fan, then apply a high-quality, mold-resistant silicone to reseal it. This addresses the root of the problem.

However, if the mold covers a large area (more than one square meter), if you see it has spread behind tiles or walls, or if household members experience persistent respiratory issues, a professional inspection is warranted. They can use moisture meters and borescopes to check for hidden moisture and growth within the wall cavity, which is a common issue in villas. Professional remediation ensures the colony is fully contained and removed, preventing it from spreading through your AC system.