Can I clean black bathroom grout myself or hire a pro?« Back to Previous Page

That black grout is likely mold, not just dirt. In Dubai's high humidity, bathroom surfaces stay damp enough for mold to thrive, especially in poorly ventilated corners. A stronger bleach solution can sometimes work for surface-level growth, but it often fails to kill the roots embedded deep within the porous grout.

For a small, surface-level patch, you can try a dedicated grout cleaner or a paste of baking soda and hydrogen peroxide. Scrub thoroughly and ensure the area is completely dried afterward. The real solution is controlling moisture; run your bathroom exhaust fan for at least 30 minutes after every shower and wipe down wet walls to reduce condensation.

If the discoloration returns quickly, covers a large area, or has a musty odor, the growth is likely extensive beneath the surface. In such cases, DIY cleaning just spreads spores temporarily. Professional assessment is needed to determine if the grout and underlying wall require remediation to prevent structural damage and potential health impacts from airborne spores. Companies with microbiological testing can identify the mold type and verify it's fully removed after cleaning.