Urgent to hire pro for shower mold behind sealant?« Back to Previous Page

That's a classic and very common issue in Dubai bathrooms. The high humidity, especially now, creates perfect conditions for mold behind silicone seals where condensation gets trapped.

What you've found is a significant red flag. If there's visible growth under the sealant, there is a high probability it has spread behind the tiles. The musty smell is a strong indicator that the growth is more extensive than what's visible. In this climate, the core moisture problem is often inside the wall cavity, which a surface cleaner cannot reach.

For a small, surface-only patch, a DIY approach with a dedicated mold remover (not just bleach) can work. However, since you suspect it's behind the tiles, this is a case for a professional assessment. They use moisture meters and borescopes to see inside the wall and determine the true extent. The urgency is high to prevent structural damage to the drywall and substrate, which becomes far more expensive to fix.

The goal of remediation isn't just to clean what you see, but to identify and correct the source of moisture—often inadequate sealing, poor ventilation, or a leak in the plumbing behind the wall—and ensure the wall cavity is properly dried. Without this, it will return quickly. For verifiable results, seek a provider that can document the moisture levels before and after the job and explains the root cause they intend to fix.