Black mold under shower sealant: professional cost or DIY?« Back to Previous Page

Black mold under silicone sealant is extremely common in Dubai due to the high humidity and condensation from showers. The cost for professional remediation depends heavily on the extent of the mold growth behind the sealant and whether it has penetrated the grout or wallboard. For a standard shower reseal, expect a range from a basic clean-and-reseal to a more involved process if underlying damage is found. Reputable companies will provide a detailed assessment and quote before starting any work.

You can attempt a DIY fix if the area is small and confined to the surface. Use a hydrogen peroxide-based mold cleaner or a diluted bleach solution from ACE, scrub thoroughly, and let the area dry completely for at least 24-48 hours before applying new, high-quality mold-resistant silicone. However, if the mold has spread behind the tiles or the drywall feels soft, DIY will only address the surface issue. The musty smell you describe often indicates a deeper problem.

For a permanent solution, a professional inspection is recommended. They can assess the full extent of the damage, ensure proper containment to prevent spores from spreading to other rooms, and use industrial-grade antimicrobials. The key is not just cleaning but fixing the moisture source and ensuring the area is bone-dry before the final seal, which is difficult to achieve in our climate. A proper job should include a warranty on the workmanship.