How to permanently remove mold from a closet?« Back to Previous Page

The AC in my bedroom closet has been leaking a bit for the past month, and now I've found a patch of black mold on the back wall and on some of our shoes. We had a technician fix the leak last week, but I'm terrified the mold will just come back in this humidity. What is the most effective way to clean this and what kind of dehumidifier or product should I use in the closet to make sure it's gone for good?
Posted by Ryo Li
Asked on March 24, 2026 3:50 am
The mold growth in your closet is a direct result of the AC leak and the subsequent high humidity, a classic issue in Dubai's climate where condensation and year-round AC use create ideal conditions for fungal proliferation. Simply fixing the leak is not enough; the mycotoxins and spores from the existing colony must be professionally addressed to prevent regrowth and potential health risks.

The most effective method for permanent removal is a multi-step remediation process. First, the affected area must be isolated to prevent cross-contamination. The porous materials like the damaged shoes are likely unsalvageable and should be bagged and discarded. For the wall, a HEPA vacuum is used to remove all loose spores before the surface is scrubbed with an EPA-approved antimicrobial cleaner, not just a household bleach solution which is ineffective on porous surfaces and can exacerbate the problem by adding moisture. Following cleaning, a mold-inhibiting sealant should be applied to the wall to prevent future growth from any deeply embedded hyphae.

Crucially, the underlying moisture issue must be solved. Even with the leak fixed, the closet will remain a humidity trap. A small, dedicated desiccant dehumidifier is essential for this enclosed space to maintain humidity levels below 50%, effectively starving any remaining spores. Ensure the closet is well-ventilated and consider leaving the door ajar periodically.

Given the visible growth and the duration of the leak, a professional inspection is strongly recommended. We must determine if the mold has penetrated the drywall or backing, which would require removal and replacement. DIY attempts often disturb the colony, causing widespread spore dispersal. For a guaranteed permanent solution and a post-remediation verification test to confirm the space is safe, contact our certified specialists at Saniservice. Call 800-MOLDS (800-66537) or email hello@saniservice.com for a comprehensive assessment and remediation plan.
Posted by Sani Admin
Answered on March 24, 2026 10:24 am