Black mold behind sofa: how to clean and who to call?« Back to Previous Page

That black fuzz is likely Stachybotrys or Cladosporium mold, a common issue in Dubai villas due to high humidity and dew penetration through exterior walls. The first step is to identify and stop the moisture source; a professional inspection with a thermal moisture meter is crucial for this, as the dampness inside the wall is often worse than it appears.

For a small patch under 1 square meter, you can clean it yourself. Wear an N95 mask and gloves. Scrub the area with a mixture of detergent and water, then disinfect with a diluted white vinegar solution. Do not use bleach, as it only removes the surface colour and can push spores deeper into porous materials like drywall.

However, given the location on an exterior wall and the climate, this is likely a symptom of a larger moisture intrusion. The wall cavity may have significant condensation or a capillary leak. For proper assessment, you need a certified mold inspector who can perform non-destructive moisture mapping and, if necessary, take air and surface samples for lab analysis to identify the species and concentration.

Call a company specializing in building health diagnostics, not just a general cleaner. They should use a thermal imaging camera and pin-type moisture meters to quantify the dampness within the wall. Remediation often involves creating ventilation holes, drying the cavity with industrial dehumidifiers, and applying antimicrobial coatings—all tasks for a professional team. The goal is to fix the moisture problem first; otherwise, the mold will return quickly.