Urgent: Shower mold needs professional or can I DIY?« Back to Previous Page

That black and green mold under silicone sealant is a very common issue in Dubai bathrooms due to the high ambient humidity. The constant dampness you feel is the core problem; exhaust fans often can't keep up.

For a small, surface-level patch, a DIY approach can work. Bleach is not the best choice—it's mostly water and can't penetrate porous surfaces to kill the root structure. Instead, use a dedicated mold remover or a paste of baking soda and vinegar, scrub thoroughly, and let the area dry completely for 24-48 hours before reapplying 100% silicone sealant.

However, if the mold growth is extensive, has a strong musty odor, or if you see any warping or softening of the underlying walls, it indicates deeper moisture penetration. In these cases, especially in an apartment, professional assessment is recommended. They can use moisture meters to check for hidden water damage within the wall cavity, which is a common and serious issue here. Remediation would involve removing the affected sealant and any compromised building materials, treating the area with industrial-grade antimicrobials, and ensuring it is fully dry before a proper reseal. This prevents rapid regrowth, which is very likely if the root cause isn't addressed.

Given your description of a persistent musty smell and growth under the seal, it's likely more than surface level. A professional inspection can quickly determine the extent and if there's hidden damage, giving you peace of mind.