How to treat closet mold and prevent moisture permanently?« Back to Previous Page

Our master bedroom closet on the outside wall has started to feel damp, and I just found a patch of black mold on a couple of my leather bags stored in the back. We run the AC constantly, but after the heavy dew last week, the problem seems worse. What’s the best way to treat this myself to save the bags and what can we do to stop the moisture from coming back for good?
Posted by Kayla Harris
Asked on March 29, 2026 7:25 am
Based on your description, this is a classic case of interstitial condensation, extremely common in Dubai due to the high ambient humidity and constant AC use creating a significant temperature differential. The "heavy dew" was likely a higher humidity event that pushed the conditions over the threshold, causing moisture to condense on the cooler outer wall inside the closet.

For immediate treatment on your leather bags, do NOT use bleach or household cleaners. For non-porous materials like finished leather, a solution of 70% isopropyl alcohol and 30% distilled water, applied with a soft, clean cloth, can effectively remove surface mold without damaging the material. Test on an inconspicuous area first and allow the items to dry completely away from the damp area.

However, wiping the surface is only a temporary fix. The real issue is the hidden moisture within the wall and possibly inside the HVAC system serving that room. The constant AC is lowering the air temperature, but if the closet is cluttered and has poor air circulation, the wall remains a cold spot where moisture condenses. Permanent prevention requires a professional assessment. We need to identify if this is purely a condensation issue or if there's a hidden leak from the AC drain line or a crack in the building envelope, which is subject to strict UAE building codes (such as the Dubai Green Building Regulations).

I strongly recommend a professional inspection. Our certified team uses thermal imaging cameras to pinpoint the exact source of the moisture and humidity meters to assess the level of saturation in the building materials. DIY solutions often fail because they don't address the root cause, leading to recurring mold that can impact air quality. For a definitive solution and to protect your health and property, 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 March 30, 2026 9:36 pm