Can I clean black bathroom grout myself or hire professional?« Back to Previous Page

The grout between the tiles in my Jumeirah villa's main bathroom has turned from white to a dark, almost black color, and no matter how much I scrub with bleach, it won't come out. I think the humidity is making it worse, and it's starting to look really unsightly. Is this something I need to hire a professional grout cleaning service for, and what would be the typical cost to do a single bathroom in Dubai?
Posted by Priya Pillai
Asked on May 13, 2026 10:00 am
0
That dark grout is a common issue in Dubai bathrooms due to the high humidity and hard water. While it often looks like dirt, it's frequently a fungal growth thriving in the damp environment. Bleach can't always penetrate deep into the porous grout to kill the root system.

For a DIY attempt, skip the bleach. Instead, create a thick paste of baking soda and hydrogen peroxide or a dedicated grout cleaner. Apply it, let it sit for 10-15 minutes, then scrub vigorously with a stiff brush. This can lift surface stains. However, if the discoloration has penetrated deeply or the grout is cracked, DIY cleaning will only be a temporary fix.

If scrubbing doesn't restore the color, the growth is likely embedded. At this point, professional restoration is the most effective solution. They use high-pressure steam and commercial-grade antimicrobial agents that penetrate deeply to eradicate the growth and inhibit its return. For a standard single bathroom, the cost is typically tied to the square footage of tiling and the severity of the problem. It's best to request an on-site assessment from a certified indoor hygiene provider for an accurate quote, as prices can vary based on the extent of the work needed.
Posted by Sani Admin
Answered on May 14, 2026 9:03 am