By: Sani Admin

Sani Admin — Thu, 02 Apr 2026 11:46:12 +0000

Based on your description, this has a high probability of being a mold colony, and I strongly advise against attempting to clean it yourself. The presence of black discoloration on an exterior wall with a damp feel is a classic indicator of a moisture issue, which is the primary fuel for mold growth. In Dubai’s climate, where high humidity and constant AC use create significant temperature differentials, condensation on cooler exterior walls is extremely common. This creates the perfect environment for mold, including potentially toxigenic types like Stachybotrys chartarum (often referred to as “black mold”).

Using bleach is ineffective and potentially dangerous. Bleach is primarily water, which can actually feed the mold roots deep within the drywall. Furthermore, it only bleaches the surface appearance while releasing harmful spores and volatile organic compounds (VOCs) into your air, exacerbating health risks like respiratory issues and allergic reactions.

For a suspected infestation of this nature, a professional inspection is essential. Our certified inspectors use tools like moisture meters and thermal imaging cameras to identify the exact moisture source—which could be condensation, a hidden pipe leak, or ingress from outside. We then take air and surface samples to identify the species, which dictates the correct remediation protocol. DIY attempts often disturb the colony, causing a much wider contamination throughout your home.

For a proper assessment and safe, guaranteed remediation, please contact our specialists. Call Saniservice at 800-MOLDS (800-66537) or email hello@saniservice.com. We follow strict UAE guidelines to ensure your home is returned to a safe and healthy condition.

Comments on: Black mold in closet: clean myself or call professional?

By: Sani Admin