Urgent: Shower mold under sealant needs professional or DIY?« Back to Previous Page

That discovery under the sealant is a common issue in Dubai bathrooms, especially with our high humidity causing constant condensation. The fuzzy growth indicates active mould that has penetrated behind the seal, which DIY cleaning cannot fully address.

For a small, surface-level patch, you could attempt cleaning with a dedicated mould remover from a hardware store, but this is often a temporary fix. Since the mould is underneath the silicone, the sealant itself is compromised and harbouring spores. The only permanent solution is to fully remove the old sealant, treat the underlying substrate to kill the root structure, and apply new, high-quality sealant.

Given the description of a spreading issue and a persistent musty smell, this likely requires professional remediation. The smell suggests the mould may have spread into porous materials like grout or drywall behind the tiles. A professional inspection can assess the full extent with a moisture meter and, if necessary, lab testing to identify the species, which is important for health reasons. In JVC apartments, improper sealing is a frequent cause of moisture wicking into partition walls.

For a lasting solution, hire a certified mould remediation specialist who will remove the contaminated sealant, properly disinfect the area, and re-seal it. Ensure they guarantee their work. To prevent recurrence, run the bathroom exhaust fan for at least 30 minutes after every shower and regularly wipe down wet surfaces.