Is black bathroom grout a tenant or landlord responsibility?« Back to Previous Page

Black bathroom grout is typically the tenant's responsibility for cleaning and maintenance, as it falls under routine upkeep. However, if the issue is due to a structural or systemic building problem, it becomes the landlord's responsibility to fix the underlying cause.

In your JVC apartment, the rapid return of black, slimy grout points to a persistent moisture issue, not just inadequate cleaning. Dubai's high humidity, especially in bathrooms with poor ventilation, creates a perfect environment for mould and mildew. The problem is likely exacerbated if the bathroom's exhaust fan is underpowered, unused, or if there's a hidden leak from plumbing or a faulty shower sealant.

Your first step is to formally notify your landlord or building management in writing, with photos. Under Dubai rental law (Law No. 26 of 2007), the landlord is obligated to maintain the property's structure and essential systems. A recurring mould problem from inadequate ventilation could be considered a failure to provide a habitable property. Request they investigate for leaks and assess the ventilation system's performance.

While awaiting their response, increase airflow by running the exhaust fan for at least 30 minutes after showering and keeping the bathroom door open. For cleaning, a paste of baking soda and vinegar applied to the grout can help remove surface mould temporarily. However, this will not solve a deeper issue. If the mould is widespread or you experience persistent musty odours, a professional indoor environmental assessment can identify the moisture source and mould type, which provides concrete evidence for your landlord.