Should I remove black mold under sealant myself?« Back to Previous Page

It depends on the extent. For a small, isolated patch (under 1 square foot), you can attempt DIY removal. However, given that the mold is hidden under sealant and causing a persistent musty smell, the growth is likely more extensive than it appears, and professional assessment is strongly recommended.

For DIY, wear an N95 mask, gloves, and eye protection. Scrape away all the compromised silicone sealant. Clean the area thoroughly with a dedicated mold-removing cleaner or a solution of white vinegar and water. The critical step is to let the area dry completely for at least 24 hours before applying a high-quality, mold-resistant silicone to reseal it. Without perfect drying, the mold will return quickly.

The high humidity in Dubai, especially during summer, creates a perfect environment for this type of hidden mold. Bathrooms with poor ventilation or AC systems that aren't maintaining low humidity are particularly susceptible. If the mold has penetrated behind tiles or into the grout, or if the musty smell persists after cleaning, the issue is beyond a surface fix. A professional inspection can identify the moisture source—often a small leak or condensation—and use tools like moisture meters to assess the wall's condition. In many cases, full remediation and re-grouting by a certified technician is the only permanent solution to prevent recurrence and protect your indoor air quality.