How to permanently remove kid-safe mold in Dubai bathroom?« Back to Previous Page

We’ve lived here for 2 years and just noticed black spots growing in the grout between the tiles in our master bathroom. It’s the kids' main bathroom too, and my youngest has been having a runny nose and a bit of a cough that I’m starting to worry is connected. I tried scrubbing it with bleach, but it came back after a few days. What’s the most effective and kid-safe way to permanently get rid of this mold in our Dubai bathroom?
Posted by Kenji Tanaka
Asked on March 29, 2026 11:20 am
Black mould in bathroom grout is common in Dubai due to high humidity and AC condensation cycles. Bleach only removes surface discoloration, not the root hyphae. For a permanent, kid-safe solution, start by addressing the moisture source—ensure your exhaust fan is functional and run it for 30 minutes after showers.

Scrub the affected grout with a paste of baking soda and water or a dedicated, non-bleach mould remover. For persistent growth, a solution of white vinegar can be more effective at penetrating and killing the root structure. After cleaning, applying a mould-resistant sealant to the grout lines can prevent recurrence.

If the mould returns quickly or covers a large area (over one square meter), or due to your child's symptoms, a professional inspection is advised. They can identify hidden moisture problems and perform air or surface sampling to determine the spore count and species, which is critical for assessing health risks. DIY methods often fail in our climate without also controlling the underlying humidity.
Posted by Sani Admin
Answered on March 31, 2026 5:36 pm