AC mold behind wall: professional needed and cost in Dubai?« Back to Previous Page

The AC in my apartment in Jumeirah seems to be leaking into the wall behind it, and now there's a large patch of black mold spreading there. It's been getting worse since the humidity spiked a couple of weeks ago. I've tried wiping it with vinegar, but it just comes back stronger and I'm worried about it affecting the AC unit itself and our health. For a job like this inside the wall, is it absolutely necessary to hire a professional mold remediation company, and what’s a realistic cost I should expect for this in Dubai?
Posted by Barbara Rodriguez
Asked on April 7, 2026 8:45 am
Yes, professional remediation is strongly advised for mold inside a wall. Wiping surface mold with vinegar addresses the visible growth but not the hidden colony or the moisture source. In Dubai's climate, the constant high humidity and AC condensation provide a perpetual food source, allowing it to regrow quickly and spread unseen.

The leak from your AC drain line has saturated the wall, likely fostering growth within the insulation and drywall. A proper remediation involves identifying and fixing the primary water leak, containing the area to prevent spore dispersal, removing and disposing of contaminated porous materials like drywall and insulation, HEPA vacuuming, and treating the cavity with antimicrobial solutions. This process requires specific equipment and protocols to ensure it is done safely and effectively.

For cost, expect a significant range. Simple contained jobs might be on the lower end, while extensive contamination requiring structural repairs and air scrubbing will be higher. The final cost is determined by the infestation's square footage, accessibility, and required containment levels. Reputable companies provide a detailed assessment and quote only after a thorough inspection. Always request a scope of work that includes post-remediation verification to confirm the mold levels have been returned to a normal ecological range.
Posted by Sani Admin
Answered on April 9, 2026 9:24 pm