Black mold in shower grout: DIY or professional fix in Dubai?« Back to Previous Page

Small black spots on shower grout can often be managed with a DIY approach. For surface-level mold, a paste of baking soda and vinegar or a dedicated grout cleaner from a hardware store can be effective. Scrub thoroughly, ensure the area is completely dry after use, and improve ventilation by running the bathroom exhaust fan for at least 30 minutes after showering.

However, the fact it's spreading and located in a corner is a red flag. In Dubai's high humidity, this often indicates a persistent moisture issue behind the tiles, which a surface clean cannot fix. If the mold returns quickly after cleaning or if you can see it spreading into the porous grout lines, the problem is likely deeper. A professional inspection is warranted to assess if there is moisture trapped within the wall cavity. They use moisture meters and borescopes to see behind the tiles without causing damage.

For a proper fix, the cost is not for cleaning but for remediation. This can range from a localized regrouting and resealing job to the complete removal of affected tiles and underlying wallboard to address the root moisture source and prevent regrowth. The final cost depends entirely on the extent of the hidden damage. Always request an on-site assessment to get an accurate scope of work and associated cost.