Is black grout mold landlord's responsibility in Dubai?« Back to Previous Page

Black grout in bathrooms is almost certainly mold, especially given Dubai's high humidity. The condensation from hot showers combined with year-round AC use creates ideal conditions for it to thrive.

Under Dubai rental law (Law No. 26 of 2007), the landlord is responsible for the property's structural integrity and addressing issues that affect the habitability of the unit. Since recurring mold can indicate a more serious ventilation or water leakage problem—potentially inside the walls—it typically falls under the landlord's purview. As a tenant, your responsibility is generally to report the issue promptly and maintain good ventilation to prevent it.

Bleach only removes surface discoloration and does not address the root cause or the hyphae (roots) growing into the porous grout. The rapid return confirms an active moisture problem.

You should formally notify your landlord or property management company in writing. Request that they investigate not just the visible mold but also the source of moisture, which could be inadequate bathroom ventilation, a hidden pipe leak, or insufficient sealing around the tiles. For a persistent issue like this, a professional inspection is wise to determine if the mold has spread into the wall cavity. A moisture meter reading and, if necessary, air quality testing can provide concrete evidence of the problem's scope for your landlord.