Is black mold in my closet causing my kids' cough?« Back to Previous Page

My kids have been coughing and I suspect it's from the black mold I just found in the corner of our master bedroom closet. We’ve lived here for 2 years and just noticed it when I was putting away winter clothes; it’s on the back wall that faces the outside. I run the AC constantly but the closet is always a bit damp. What’s the best permanent fix for this to stop it from coming back—do I need a special dehumidifier for the closet, or should I get the building management to check the external wall for leaks?
Posted by Sandra Rodriguez
Asked on March 29, 2026 7:11 pm
Based on your description, it is highly probable that the black mold (commonly Stachybotrys chartarum or Aspergillus niger) in your closet is a significant contributor to your children's persistent cough. These molds produce mycotoxins and volatile organic compounds (VOCs) that are potent respiratory irritants, especially in children whose systems are more sensitive. The location on an external wall and the constant dampness are classic indicators of a chronic moisture issue.

In Dubai's climate, this is a frequent problem. The extreme outdoor humidity, combined with year-round air conditioning, creates significant temperature differentials that lead to condensation within the building envelope. Your constantly running AC cools the air, but if the closet is poorly ventilated or the wall has inadequate insulation, the warm, humid air from outside condenses on the cold internal wall surface, creating the perfect environment for mold growth. Simply cleaning the visible mold is not a permanent fix.

For a complete solution, a two-pronged professional approach is essential. First, the moisture source must be definitively identified and eliminated. This requires a professional inspection to diagnose whether the issue is purely condensation due to a thermal bridge in the wall or if there is a hidden leak from the external wall or adjacent plumbing. Building management should be involved to inspect the building's exterior cladding and sealing, as per Dubai's strict building maintenance regulations.

Second, the affected area must be properly remediated. This involves more than wiping it down; it requires isolating the area, using HEPA filtration to capture airborne spores, and applying professional-grade antimicrobial agents to eliminate the colony at its root. Afterwards, addressing the ambient humidity in that micro-climate is crucial. A standalone dehumidifier for the closet is a temporary measure; a permanent fix may involve improving the closet's ventilation or having your AC system serviced and balanced to ensure adequate airflow to all rooms.

Given the health symptoms and the structural implications, we strongly recommend a certified inspection. Our team at Saniservice can conduct a comprehensive assessment, including moisture mapping and air quality testing, to pinpoint the exact cause and scope of the problem. Please call us at 800-MOLDS (800-66537) or email hello@saniservice.com to schedule a diagnosis and receive a remediation plan.
Posted by Sani Admin
Answered on March 31, 2026 12:37 pm