Best way to remove mold from shower tiles and grout?« Back to Previous Page

We've lived in our Jumeirah apartment for 2 years and just noticed a bunch of black spots growing along the bottom of the shower tiles and the grout is looking a bit crumbly. I’m pretty sure it’s mold, especially with the humidity we’ve had lately. What’s the best and fastest way to get rid of this for good, and should I call my building management first or just handle it myself?
Posted by Salma Al-Salem
Asked on April 3, 2026 12:35 am
Based on your description from your Jumeirah apartment, you are dealing with a classic case of bathroom mold, a very common issue in Dubai due to our high humidity levels and the constant cycling of air conditioning, which creates significant condensation. The black spots are likely Cladosporium or Aspergillus, and the crumbly grout indicates moisture has penetrated behind the tiles, which is a more serious concern.

For immediate, surface-level mold on the tile and grout, a solution of distilled white vinegar or a dedicated EPA-approved fungicidal cleaner is effective. Scrub with a stiff-bristled brush (not a wire brush, which can damage grout) and ensure the area is thoroughly dried afterwards. However, this is a temporary fix. The crumbly grout suggests the moisture problem is sub-surface. Simply cleaning the surface will not address the mold growing within the wall cavity.

In the UAE, the responsibility for remediation depends on the source. If the leak is from internal plumbing within your apartment, it is typically the tenant's or owner's responsibility. If it originates from a central building system or a leak from an adjacent unit, building management must be involved. I strongly recommend you contact your building management first to report the issue and have their maintenance team investigate the potential source. This documents the problem and clarifies liability.

For a permanent solution, professional assessment is crucial. Our certified inspectors use moisture meters and borescopes to determine the extent of the damage behind the tiles. Remediation often involves removing the affected grout and tiles, treating the underlying structure with antimicrobial agents, and then reinstalling with modern, mold-resistant materials. This is not a DIY job, as improper handling can aerosolize spores and spread the contamination.

Given the climate and the potential for structural damage and health impacts, I advise against a purely DIY approach. For a definitive inspection and a guaranteed remediation plan, please call our specialists at 800-MOLDS (800-66537) or email hello@saniservice.com. We can provide a clear assessment and work with you and your building management to resolve it correctly.
Posted by Sani Admin
Answered on April 4, 2026 5:17 pm