Should I hire a pro for black mold behind shower sealant?« Back to Previous Page

Black mold behind silicone sealant in a Dubai bathroom is a common issue due to our high humidity and condensation from constant AC use. If the visible area is small (under one square foot) and you are not experiencing health symptoms, a DIY approach may be sufficient. However, the musty smell you describe strongly suggests the mold has spread behind the tiles or into the wall cavity, which a surface clean cannot address.

For a proper DIY clean, avoid bleach as it only removes surface color and can push spores deeper. Use a dedicated mold remover or a vinegar and baking soda paste. The critical step is to completely remove the old, contaminated silicone sealant, allow the area to dry thoroughly with a fan for 24-48 hours, and apply a high-quality, mold-resistant silicone to re-seal.

Given the persistent musty odor and potential for hidden growth, a professional assessment is recommended. They use moisture meters and borescopes to inspect behind walls. If the drywall or backing board is wet or the mold has spread significantly, remediation involves removing affected materials to prevent structural damage and recurring health issues. A company with its own microbiology lab can also test to identify the mold species, which is important for assessing risk and verifying the cleanup was successful.