Is black mold under shower sealant an urgent landlord issue?« Back to Previous Page

Yes, this is urgent and you should notify your landlord immediately. In Dubai, black mould growth due to persistent humidity or water leakage is a habitability issue that landlords are typically responsible for rectifying under the rental law.

The discovery behind the sealant indicates a moisture problem that likely extends deeper into the grout or wall substrate. Given Dubai's high humidity, this mould will continue to spread unseen, potentially compromising the wall integrity and indoor air quality. For a case like this in a Jumeirah apartment, a professional inspection is strongly recommended to assess the full extent. They can use moisture meters and borescopes to check behind tiles without unnecessary demolition.

Document the issue thoroughly with photos and send a written notice to your landlord or property management company, referencing the specific location and concern. They should arrange for a qualified remediation team to properly address it. Do not attempt to remove it yourself with bleach, as this only addresses surface stains and can aerosolize spores. Effective remediation requires removing the contaminated sealant, treating the underlying area, and fixing the moisture source before a proper reseal.

The urgency is high to prevent further structural damage and potential health effects, especially since the musty smell suggests the mould is active and releasing spores into your bathroom's environment.