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

Black grout in a bathroom is almost always due to mould growth, a common issue in Dubai apartments driven by the high humidity from showers and year-round AC condensation. This environment creates persistent dampness that regular mopping cannot address.

In most tenancy contracts, the landlord is responsible for structural and maintenance issues, while the tenant handles day-to-day cleaning. The key distinction is whether this is a surface-level cleaning problem or a deeper moisture issue. If the black discoloration is superficial and limited to the surface, it is typically the tenant's responsibility to clean. However, if the mould has penetrated the grout or if there is underlying water damage from leaking pipes or failed sealant, it becomes a maintenance issue for the landlord.

Given it's spreading from the corners, this often indicates a persistent damp environment or possible sub-surface moisture. For a clear resolution, first report it to your building management or landlord. Document the issue with photos and a written notice, as this creates a record. They should assess if there is a leak or inadequate ventilation contributing to the problem.

For immediate action, you can attempt to clean superficial mould with a dedicated grout cleaner or a solution of white vinegar and baking soda. However, if the growth returns quickly or the grout is crumbling, this points to a deeper issue requiring professional remediation to prevent damage to the wall structure. A professional inspection can determine the root cause—be it a leak or excessive ambient humidity—and prescribe the correct solution.