Is my landlord responsible for black bathroom grout?« Back to Previous Page

Black grout in bathrooms is extremely common in Dubai due to the high humidity and condensation from showers and air conditioning. It's often a surface mold or mildew, but it can indicate a deeper moisture issue.

Your landlord is generally responsible for fixing the underlying cause if the dampness is due to a structural problem, like a hidden pipe leak, faulty waterproofing, or inadequate ventilation. Under the Dubai Rental Law, landlords must maintain the property in a habitable condition, which includes addressing issues that affect the property's integrity or your health. If the black growth is purely from surface condensation and there's no hidden defect, cleaning is typically the tenant's responsibility.

Start by informing your landlord in writing. Describe the location and that it's persistent despite cleaning. They should send a maintenance person to check for leaks behind the toilet or in the walls. If there's no leak, the issue is likely the humid environment.

For surface mold, a solution of one part distilled white vinegar to one part water sprayed on the grout (never mix vinegar and bleach) can be effective. Scrubbing with a stiff brush is key. Improve ventilation by running the bathroom exhaust fan for at least 30 minutes after every shower and wiping down wet surfaces. A small dehumidifier can also help in a studio.

If the black discoloration returns quickly after a thorough cleaning, spreads to drywall, or you notice a persistent musty smell, it's time to recommend a professional inspection. They can determine if the mold is more extensive behind the tiles and identify the exact moisture source, which is crucial for your landlord to properly remediate.