How to permanently stop AC leak causing black mold?« Back to Previous Page

Based on your description, this is a very common issue here in Dubai's climate. The problem isn't the mold you see on the skirting board; that's just a symptom. The root cause is the persistent moisture from the AC leak, and until that's fixed, the mold will absolutely return, even after cleaning. Wiping it is only a temporary fix.

The most effective long-term solution requires a systematic approach. First, you must stop the water intrusion. AC leaks are typically caused by a clogged condensate drain line, a damaged drain pan, or insufficient insulation on the cold water pipes causing excessive condensation. A certified HVAC technician needs to inspect the unit, clear the drain line with a vacuum or jet, and ensure the drain pan is intact and properly sloped. For a villa, the drain line might run a long way to an external outlet, which can get blocked with sand or debris.

Once the leak is permanently fixed, the REAL remediation begins. The small patch of visible mold indicates a larger hidden problem. Water wicks up through the concrete and into the wall cavity behind the skirting board. This requires professional mold remediation: removing the affected skirting board, drilling small inspection holes to assess the wall cavity, using industrial air scrubbers with HEPA filtration, and applying EPA-approved antimicrobial solutions to eliminate the mold at its source. Simply cleaning the surface does nothing to address the colony growing within the structure.

Given the high humidity, this is a health risk. For a proper inspection and a guaranteed solution, I strongly recommend calling our certified team. We can pinpoint the exact moisture source and ensure the mold is eradicated completely, not just hidden.

Call us at 800-MOLDS (800-66537) or email hello@saniservice.com for a comprehensive assessment.