Should I handle AC wall mold myself or hire a pro?« Back to Previous Page

The AC in my apartment in Jumeirah Village Circle seems to be leaking into the wall behind it, and now there's a spreading black patch that looks fuzzy. We've had the AC running non-stop for months because of the heat, but I just noticed this last week when I moved a piece of furniture. Is this something I can handle myself with bleach, or is it a job for a professional, and what kind of cost am I looking at for a one-bedroom apartment?
Posted by Steven Torres
Asked on April 6, 2026 6:05 pm
Based on your description, this is a classic and serious case of AC-induced mold growth, extremely common in Dubai's climate. The constant operation of your AC unit, combined with high ambient humidity, leads to significant condensation. A leak indicates a fault in the drain line or drip pan, providing the constant moisture necessary for toxic black mold (likely Stachybotrys chartarum) to thrive inside your wall cavity.

Attempting remediation with bleach is highly inadvisable and against UAE best practices. Bleach is ineffective on porous surfaces like drywall and concrete, as it only bleaches the surface mold without addressing the root colony. More critically, it can aggravate the problem by adding moisture and its volatile fumes are a severe respiratory irritant, especially in an enclosed space.

The mold inside your wall is likely far more extensive than the visible patch. This requires professional assessment and remediation. A certified inspector will use moisture meters and borescopes to determine the full extent of the damage behind the wall. The remediation process involves: isolating the area with containment barriers, using HEPA filtration to capture airborne spores, safely removing the contaminated building materials, and applying professional-grade antimicrobial solutions.

For a one-bedroom apartment with a localized issue like this, you could be looking at a cost ranging from AED 1,500 to AED 4,000, depending on the extent of the damage and the required repairs. This is a necessary investment to protect your health and the structural integrity of your property.

Given the potential health risks and complexity, I strongly recommend you cease using that AC unit immediately and contact a professional. For a certified inspection and quote, please call Saniservice at 800-MOLDS (800-66537) or email hello@saniservice.com. They are experts in dealing with these exact UAE-specific mold scenarios.
Posted by Sani Admin
Answered on April 7, 2026 3:21 pm