Mold under AC in Dubai: professional cost and DIY fix?« Back to Previous Page

Based on your description of a dinner-plate-sized patch of black mold on concrete under a leaking AC, I strongly advise against a DIY approach using bleach. In Dubai's high-humidity climate, visible mold is often just the "tip of the iceberg," especially on porous surfaces like concrete and within wall cavities or subflooring. Bleach is ineffective on porous materials; it only bleaches the surface while leaving the root structure intact, and the moisture from the bleach can actually fuel further growth.

For a situation like this in a Jumeirah villa, a professional inspection is absolutely necessary to determine the full extent of contamination. The cost for remediation is not a flat fee but is calculated per square meter of affected area once the full scope is mapped. For a contained area the size you describe, you could be looking at a ballpark starting range of AED 2,000 to AED 4,500. This cost is justified as professional remediation involves: containment of the area with negative air pressure to prevent cross-contamination, HEPA vacuuming, abrasive cleaning of the concrete, application of EPA-approved antimicrobials, and finally a post-remediation verification test to ensure the spore count is returned to safe, ambient levels. This process is in line with Dubai Municipality's public health and safety standards.

Attempting this yourself risks inadequate removal and significant health issues from disturbed spores. To get an accurate assessment and quote, you should call in experts. I recommend contacting Saniservice for a comprehensive inspection. They can be reached at 800-MOLDS (800-66537) or via hello@saniservice.com.