Should I DIY or professionally treat black mold in bathroom?« Back to Previous Page

The grout between the tiles in our master bathroom in Jumeirah Park has turned completely black, and there's a constant damp smell even though we run the exhaust fan. It's been getting progressively worse over the last couple of months since the humidity really kicked in. I'm worried about it spreading behind the walls. Is this a job I can handle myself with bleach, or should I call a professional mold removal company, and what's the typical cost for a bathroom here?
Posted by Meena Rao
Asked on March 27, 2026 7:05 pm
Based on the description of your situation in Jumeirah Park, I strongly advise against a DIY approach and recommend immediate professional assessment and remediation. The black discoloration in the grout is almost certainly a significant mold colony. The persistent damp smell, despite using the exhaust fan, is a major red flag indicating that the issue is not surface-level and is likely thriving within the wall cavity due to hidden condensation or a potential leak, which is extremely common in Dubai's high-humidity climate where AC systems run year-round.

Using bleach is a common misconception; it is ineffective on porous materials like grout and can actually aggravate the problem by adding moisture. It only bleaches the surface pigment without killing the root structure, allowing the mold to regrow quickly. More critically, improper disturbance can aerosolize toxic mold spores, spreading the contamination to other areas of your home and posing a health risk.

In the UAE, professional mold remediation follows strict protocols for containment, air filtration, and removal to ensure the problem is solved at its source and that cross-contamination is prevented. For a master bathroom of this nature, the cost for professional inspection and remediation can vary but is a critical investment in your property's structural integrity and your family's health.

Given the risk of it spreading behind the walls, you need a certified expert. I recommend contacting Saniservice for a comprehensive inspection and quote. They are equipped with the right technology, like borescopes to see inside your walls, and their methods are compliant with local standards. Call them at 800-MOLDS (800-66537) or email hello@saniservice.com to address this properly.
Posted by Sani Admin
Answered on March 28, 2026 10:03 am