Is bathroom mold dangerous and how to remove it safely?« Back to Previous Page

My kids have been coughing a lot this winter, and I finally noticed a bunch of black and greenish spots growing along the ceiling and in the grout between the tiles in our master bathroom. It's the bathroom they use after their showers, and the window doesn't seem to do much to clear out the steam. Is this kind of mold a serious health risk and what's the best way to get rid of it for good without using harsh chemicals?
Posted by Giovanni Schneider
Asked on April 16, 2026 2:20 am
The mould in your bathroom is likely causing your kids' coughing, especially in Dubai's humid climate where steam from showers gets trapped. Black or green mould on grout and ceilings is often from the Cladosporium or Aspergillus families, which are common irritants that can trigger allergy-like symptoms such as coughing, sneezing, and congestion in sensitive individuals. The risk is higher for children and those with asthma.

To remove it safely without harsh chemicals, start with a solution of distilled white vinegar or a paste of baking soda and water. Spray or scrub the affected grout and ceiling, let it sit for an hour, then rinse thoroughly. For persistent growth, a hydrogen peroxide solution can be more effective. The key to preventing its return is controlling moisture. Run the bathroom exhaust fan for at least 30 minutes after every shower and keep the door open to allow steam to escape. If your window is ineffective, a small dehumidifier can help measurably reduce humidity levels.

If the mould covers a large area (generally more than one square meter), returns quickly after cleaning, or if the coughing persists, a professional inspection is recommended. In the UAE, hidden mould can thrive behind tiles due to condensation from constant AC use. A certified inspector can identify the species and moisture source, and remediation follows standards like the IICRC S520, focusing on containment and removal, not just surface cleaning. For rental properties, Dubai Municipality regulations typically hold the landlord responsible for resolving structural moisture issues leading to mould.
Posted by Sani Admin
Answered on April 16, 2026 9:31 am