Is black grout in bathroom tenant's responsibility in Dubai?« Back to Previous Page

Black grout in a bathroom is typically caused by mould growth, which is a direct result of high humidity and poor ventilation—a very common issue in Dubai's climate.

Regarding responsibility, it depends on the severity. For minor surface mould on grout due to daily use, tenants are usually responsible for routine cleaning as part of general upkeep. However, if the mould is widespread, recurrent despite your cleaning efforts, or caused by a structural issue like a hidden leak, inadequate ventilation, or faulty waterproofing, then it becomes a maintenance issue for the landlord. The persistent dampness behind your toilet and spread to the vanity suggests a deeper humidity problem that may exceed simple cleaning.

Start by formally notifying your landlord or building management in writing, with photos. Document the issue and your efforts, like running the exhaust fan. This is crucial for your records. They are generally obligated to address problems that affect the property's habitability or are due to building defects. For a studio apartment where humidity gets trapped, the building's ventilation system might be insufficient.

For a case that is spreading, a professional inspection is wise to determine the root cause—whether it's just surface condensation or something more. They can assess if the waterproofing is compromised. In the meantime, increase airflow by opening windows when possible (despite the heat) and wipe down wet surfaces after showers. Use a mould-specific cleaner for the existing grout, but be aware this only addresses the visible growth, not the underlying moisture condition.