How to permanently remove black mold from window frames?« Back to Previous Page

My kids have been coughing and I suspect it's from black mold forming around the windows in their bedroom. The condensation from the AC unit builds up there every single day, and I've noticed a few small black spots starting to appear in the corners of the window frames. We live in a high-rise in JLT and this humidity is relentless. What’s the most effective way to seal these windows or treat the frames to kill the mold and stop it from coming back for good?
Posted by Akira Kobayashi
Asked on April 2, 2026 5:19 pm
As a certified mold specialist operating in Dubai, the issue you're describing is extremely common in high-rises in areas like JLT due to the intense humidity and constant AC operation. The condensation forming on your window frames provides the perfect moisture source for Stachybotrys chartarum (black mold) to thrive.

For a permanent solution, surface cleaning alone is insufficient. The most effective protocol begins with a professional inspection to determine the extent of the growth, especially within the window frame cavities where it often spreads unseen. We use moisture meters and thermal imaging cameras to assess this. For remediation, the affected area must be isolated. The mold is then removed using HEPA vacuuming and abrasive cleaning, followed by application of an EPA-approved, non-toxic fungicidal coating that penetrates the substrate to kill the roots. Crucially, the source of the moisture must be addressed. This involves improving the window seal to prevent humid air ingress and potentially adjusting your AC system to better manage the indoor dew point and reduce condensation.

Given that your children are exhibiting respiratory symptoms, this indicates a potential airborne spore issue, which warrants immediate professional assessment. DIY attempts can aerosolize spores, worsening the contamination. Our teams are certified by the Dubai Municipality and follow strict guidelines for occupant safety.

For a permanent resolution to the mold and the underlying moisture problem, I strongly recommend a professional inspection. Please call us at 800-MOLDS (800-66537) or email hello@saniservice.com for a comprehensive assessment and remediation plan.
Posted by Sani Admin
Answered on April 5, 2026 6:21 am