Is black bathroom grout mold and who removes it?« Back to Previous Page

The grout between the tiles in our Jumeirah apartment's master bathroom has turned completely black over the last few weeks. I thought it was just dirt, but it won't scrub off and there's a really strong, damp smell in there, especially after a hot shower. We keep the exhaust fan on, but it doesn't seem to help at all. Is this definitely mold, and who should I call to get it properly removed and treated?
Posted by Malgorzata Visser
Asked on April 6, 2026 11:45 pm
Black bathroom grout in a Jumeirah apartment is almost certainly mold, given the damp smell and inability to scrub it off. The UAE's high humidity, especially when combined with hot showers and inadequate ventilation, creates a perfect environment for it to thrive.

The exhaust fan may not be powerful enough for the room's size or could be venting improperly. The grout itself, if porous, provides an organic material for the mold to feed on. This requires professional remediation, not just a cosmetic fix.

For a case this severe, you should call a certified mold remediation specialist, not a general handyman. They will first conduct an inspection to identify the moisture source—which could be a hidden leak behind the tiles—and assess the extent of the growth. The proper remediation process involves containment to prevent spores from spreading, safe removal of the contaminated grout, application of an EPA-approved antimicrobial treatment, and finally, re-grouting with a mold-resistant product.

Look for a provider with certifications like IICRC and, crucially, one that conducts before-and-after testing through a certified microbiology lab to verify the mold has been properly addressed and the air quality is safe. This is the only way to ensure the problem is solved, not just covered up.
Posted by Sani Admin
Answered on April 9, 2026 4:39 pm