Should I clean black AC mold myself or call a professional?« Back to Previous Page

The AC in my bedroom has been leaking a bit onto the wall behind the unit, and now I'm seeing these dark black splotches spreading on the plaster. It's been slowly getting worse over the last few weeks since the humidity really kicked in. Should I try to tackle this with bleach myself, or is this a job where I need to call in a professional cleaning company?
Posted by Noura Jaber
Asked on March 25, 2026 2:26 pm
Based on the symptoms you've described—black splotches on plaster spreading from a leaking AC unit—this is a situation that requires immediate professional attention. In Dubai's climate, with its high humidity and year-round reliance on air conditioning, such conditions create a perfect breeding ground for mold, and what you're seeing is likely just the surface manifestation of a potentially larger colony.

Attempting a DIY remediation with bleach is strongly discouraged. Bleach is ineffective on porous materials like plaster and drywall, as it only bleaches the surface mold while leaving the root structure intact. More critically, it introduces excessive moisture, which can actually accelerate further mold growth. Disturbing the mold without proper containment can also cause a significant release of harmful spores into your bedroom's air, posing health risks.

UAE regulations, particularly from Dubai Municipality, emphasize the importance of proper indoor air quality and safe remediation practices. A professional inspection is crucial to assess the full extent of the contamination, identify the specific mold species (e.g., Stachybotrys chartarum, or "black mold"), and determine if the wall cavity behind the unit is affected.

For a comprehensive assessment and safe, guaranteed remediation, you should contact a certified professional. Our team at Saniservice is equipped with advanced diagnostic tools like borescopes and moisture meters to evaluate the damage behind walls and employs industry-standard containment and HEPA filtration to resolve the issue safely and permanently.

Do not delay. Call our experts at 800-MOLDS (800-66537) or email hello@saniservice.com for a thorough inspection and solution tailored to the unique challenges of the Dubai environment.
Posted by Sani Admin
Answered on March 27, 2026 2:36 am