Black grout and smell in Dubai: professional cost or DIY fix?« Back to Previous Page

The black grout is almost certainly mold, and the smell from the cabinet indicates a deeper moisture problem, common in Dubai's humid climate where bathrooms rarely get a chance to dry out completely. Bleach only removes surface discoloration but does not kill the root structure, which is why it returns so quickly.

For a persistent issue with an accompanying odor, a professional assessment is strongly recommended. This is not just cosmetic; the moisture feeding it could be from a small leak in the plumbing behind the wall or cabinet, which can cause structural damage over time. A proper inspection uses moisture meters and borescopes to see inside walls without unnecessary demolition.

Professional remediation costs vary significantly based on the extent of the problem. A simple surface treatment for a small area will be far less than a project requiring tile removal, wall drying, and re-grouting to address a hidden leak. You will need to request an onsite assessment for an accurate scope and quote.

If you want to try one more DIY approach before calling a pro, use a dedicated EPA-approved fungicidal cleaner (not bleach) and a stiff brush. However, this only works if the source of moisture is resolved. Ensure your bathroom's exhaust fan is working correctly and run it for at least 30 minutes after every shower. Wiping down wet surfaces immediately also helps, but in many Marina apartments with constant AC use, the temperature difference alone creates condensation that fuels mold growth. If the mold returns after a targeted fungicidal treatment, the problem is beyond a surface fix.