How to stop mold in closet from returning?« Back to Previous Page

Our master bedroom closet on the outside wall has started getting black spots on some leather bags and shoes, and it's definitely mold. We first noticed it about a month after that really humid period we had, and even though I've wiped it down, it keeps coming back. What's the best long-term solution to stop the moisture from getting in and prevent this from happening again?
Posted by Steven Walker
Asked on May 3, 2026 11:31 pm
The recurring mold in your closet is a classic Dubai issue caused by a combination of high external humidity and a cold interior wall, creating condensation inside the wall cavity. Wiping the surface is a temporary fix because the moisture source is behind the finish.

First, stop the moisture. Your outside wall is likely cooler than the room's dew point, causing water to condense on its inner surface. Ensure your AC is running consistently to dehumidify the space, even when the room is unoccupied. For a closet, leaving the door ajar can significantly improve air circulation and prevent stagnant, humid air from settling. A small, standalone dehumidifier or a renewable desiccant like silica gel packs placed inside can also help manage the micro-climate.

For a long-term solution, the wall itself needs attention. The condensation suggests insufficient insulation or a thermal bridge. A professional inspection can identify the exact point of moisture intrusion—whether it's from the outside or purely from internal condensation—and recommend targeted remediation. This often involves removing the affected drywall to assess the cavity, treating any structural mold with antimicrobial agents, and then reinstalling with proper vapor barriers and insulation designed for our climate. This creates a thermal break to prevent the cold surface where condensation occurs.

After addressing the root cause, any remaining surface mold on your belongings should be professionally cleaned to prevent regrowth; leather, in particular, can harbor spores deep within its pores. For persistent or large-scale problems, a company with its own microbiology lab can provide precise identification and a targeted remediation plan, not just a superficial cleaning.
Posted by Sani Admin
Answered on May 5, 2026 8:24 pm