Small AC leak mold in Dubai: DIY or professional removal?« Back to Previous Page

The AC in my bedroom in my Jumeirah apartment has been leaking a bit, and I've just spotted black mold starting to grow on the wall behind the wardrobe. It's a small patch, maybe the size of a dinner plate, but I'm worried about it spreading with the humidity. Is this something I can handle myself with bleach from the supermarket, or should I call a professional mold removal company here in Dubai, and what would that roughly cost?
Posted by Ajay Kapoor
Asked on April 23, 2026 6:50 pm
For a small patch from a known AC leak, DIY is possible if you address the moisture source first. The AC unit must be repaired to stop the leak completely; otherwise, the mold will return regardless of cleaning. For the wall, a simple bleach and water solution is not recommended as it only removes surface discoloration and can worsen porous materials. Use a dedicated fungicidal cleaner designed for building materials, following the manufacturer's safety instructions for application and ventilation.

Given Dubai's high ambient humidity, hidden mold growth inside the wall cavity is a significant risk, even if the surface patch appears small. The constant condensation from AC systems creates an ideal environment for it to spread unseen. A professional inspection is strongly advised to assess the full extent using moisture meters and borescopes. They can confirm the wall is dry and structurally sound post-remediation. For a confirmed contained area, professional removal costs are generally reasonable, but always request a detailed assessment and quote. The process should include containment, HEPA vacuuming, antimicrobial application, and verification that the space is safe for reoccupancy.
Posted by Sani Admin
Answered on April 24, 2026 8:39 am