Mold in bathroom grout: DIY clean or hire pro in Dubai?« Back to Previous Page

Black mould in bathroom grout is extremely common in Dubai due to the high humidity and condensation from showers. For a small, contained area like you describe, a DIY approach is often sufficient if the mould hasn't penetrated behind the tiles.

Start by scrubbing the grout with a dedicated grout cleaner or a paste of baking soda and water. For tougher cases, a diluted bleach solution (1 part bleach to 4 parts water) can be effective—ensure the room is well-ventilated. The key is to address the moisture source; run the exhaust fan for at least 30 minutes after every shower and wipe down wet surfaces to speed up drying.

However, if the mould has spread up the wall or reappears quickly after a thorough cleaning, it suggests a deeper issue. This could be moisture wicking up from the concrete slab (rising damp) or a small leak behind the wall, both common in villas. In these cases, surface cleaning is temporary. A professional inspection is recommended to identify the hidden moisture source using tools like moisture meters. Remediation cost depends entirely on the extent of the hidden damage, so an on-site assessment is necessary for an accurate scope and quote.