How to permanently prevent mold in humid apartment?« Back to Previous Page

My kids have been coughing and I suspect it's because of the black spots I just found behind our bedroom dresser in our Marina apartment. We’ve lived here for 2 years and just noticed this, probably from all the humidity lately. I cleaned it with bleach, but I'm worried it will just come back. What's the most effective long-term solution to stop this mold from returning for good?
Posted by Piotr Smit
Asked on April 24, 2026 6:25 pm
The most effective long-term solution combines moisture control, ventilation, and addressing the root cause. Bleach only removes surface discoloration; it doesn't kill the root structure and can push spores deeper into porous materials like drywall.

First, identify and eliminate the moisture source. In Marina apartments, this is often condensation from uninsulated AC ducts running inside walls or behind furniture, or a small, persistent leak. Move the dresser and feel the wall for dampness. Ensure your AC is set to a consistent, cool temperature to reduce humidity levels indoors, ideally keeping relative humidity below 60%. Use a hygrometer to monitor this.

Improve air circulation drastically. Rearrange furniture so that no large items are pressed directly against external walls, which are coldest and most prone to condensation. Leave a few inches of space. Run exhaust fans in bathrooms and kitchens for longer periods after use.

For the cleaned area, use a dedicated EPA-approved fungicidal cleaner, not bleach, to properly treat the spot. Then, consider applying a mold-resistant primer before repainting to help prevent recurrence.

For a persistent issue, a professional inspection is warranted to identify hidden moisture within wall cavities or from leaking pipes. They can use thermal imaging to find cold spots and moisture meters to quantify the problem. In serious cases, remediation may involve removing affected drywall to properly dry and treat the cavity.

Ultimately, permanent prevention is about managing the indoor environment. Given Dubai's high humidity and constant AC use, this is an ongoing process of vigilance, not a one-time fix.
Posted by Sani Admin
Answered on April 25, 2026 6:52 am