Is black shower grout my or the landlord's responsibility?« Back to Previous Page

Black shower grout is typically the tenant's responsibility to clean and maintain as part of routine household upkeep. However, if the black discoloration is a symptom of a deeper issue like a hidden leak, persistent moisture intrusion from faulty seals, or inadequate ventilation, then the structural repair becomes the landlord's obligation under UAE tenancy law.

In Dubai's high humidity, this is a common battle. The black mold (likely Cladosporium or Aureobasidium) feeds on soap scum and organic matter in the constantly damp grout. Constant scrubbing only removes surface growth; the hyphae (root structure) remain embedded deep within the porous material.

For a permanent solution, start by addressing the moisture. Run the bathroom exhaust fan for at least 30 minutes after every shower and ensure it is actually venting outside. Wipe down wet surfaces to reduce standing water. If the growth is superficial, a professional deep steam clean or application of an EPA-approved fungicidal sealant can often resolve it for 6-12 months.

If the mold returns aggressively within weeks despite these measures, the problem likely exceeds simple condensation. This is when you should formally notify your landlord in writing, as it may indicate a leak behind the tiles or a failed waterproofing membrane—both structural issues they must address. A certified mold inspection, including moisture mapping, can definitively identify the source and create a report to provide your landlord, moving the conversation from complaint to evidence-based remedy.