How to kill black mold under AC in Dubai?« Back to Previous Page

The black mold you've discovered under the AC leak is a serious concern, especially given Dubai's high humidity, which provides the perfect environment for mold proliferation. The presence of mold on concrete is particularly problematic as the porous nature of the material allows the fungal roots (hyphae) to penetrate deeply.

The most effective remediation protocol for this scenario is a multi-step process. First, the source of the moisture must be stopped. You must have the AC unit and its drainage line professionally serviced to repair the leak. Without addressing this, any remediation will be temporary. Second, the affected area must be isolated to prevent cross-contamination of spores to other parts of the home. The carpet and underlay will almost certainly need to be removed and properly disposed of.

For the concrete itself, surface cleaning with household bleach is insufficient. The mold requires professional-grade, EPA-approved biocides that are designed to kill the roots within the porous substrate. This is followed by aggressive HEPA vacuuming and sanding if the penetration is deep. After treatment, a mold-resistant sealant should be applied to the concrete to prevent future regrowth. Given the health risks associated with black mold (Stachybotrys chartarum) and the technical challenges of concrete remediation, a DIY approach is not advised.

We strongly recommend a professional inspection and remediation. Our certified technicians at Saniservice use thermal imaging to map the full extent of the moisture and mold, ensuring a complete solution compliant with Dubai Municipality's health and safety standards. For immediate assistance, please call us at 800-MOLDS (800-66537) or email hello@saniservice.com.