Can I clean black mold myself or need a professional?« Back to Previous Page

The AC in our bedroom has been leaking a bit onto the wall for a while, and now we’ve discovered a patch of black mold behind the wardrobe that’s been pushed against it. It’s not huge, maybe the size of a dinner plate, but it smells really damp. Is this something I can clean myself with bleach from the supermarket, or do I need to call in a professional company to handle it?
Posted by Suresh Singh
Asked on March 17, 2026 5:52 am
Based on the description of a persistent AC leak leading to a dinner-plate-sized patch of black mold on the wall, my professional recommendation is to call in a certified professional company for inspection and remediation. Here's why.

The primary concern is not the visible surface mold, but the moisture that has infiltrated the wall cavity. In Dubai's high-humidity climate, AC condensation leaks are a primary cause of mold growth. Simply wiping the surface with a supermarket bleach solution is ineffective and potentially hazardous. Bleach does not kill mold on porous materials like drywall or plaster; it only bleaches the visible colour while the root structure (hyphae) remains alive inside the wall. Furthermore, bleaching can release a high number of toxic mold particulates and spores into the air, worsening indoor air quality and potentially causing health issues.

A professional assessment is critical to determine the full extent of the water damage and microbial growth behind the wall. We use moisture meters and thermal imaging cameras to see what is hidden. The remediation process involves isolating the area, safely removing the contaminated porous materials, HEPA vacuuming, and applying professional-grade, EPA-approved biocides to eliminate the mold at its root, followed by sealing the area to prevent recurrence.

For a situation involving an ongoing leak and structural penetration, DIY methods are a significant health risk and will not solve the underlying problem. Contact our team at Saniservice for a comprehensive inspection. Call 800-MOLDS (800-66537) or email hello@saniservice.com. Our certified experts will provide a safe, effective, and permanent solution tailored to the specific conditions of your home.
Posted by Sani Admin
Answered on March 19, 2026 10:10 pm