New Jersey bathrooms stay humid for months at a time. Add a shower that runs twice a day and a fan that was never quite strong enough, and grout becomes a perfect surface for mildew.
Mildew versus a real mold problem
Surface mildew is black or gray speckling on the grout face and wipes partly away with a cleaner. If discoloration comes back within days, or if there are soft spots and a musty smell behind the tile, the moisture problem is structural and cleaning will not solve it.
Safe removal steps
Ventilate the room, apply a mildew-specific cleaner, let it dwell, then agitate with a nylon brush and rinse thoroughly. Never mix bleach with any other product, and never use bleach on colored grout without testing a hidden spot first.
Keeping it from returning
Mildew needs moisture. Cut the moisture and the problem largely disappears.
- Run the exhaust fan 20 minutes after every shower
- Squeegee the walls after showering
- Leave the shower door or curtain open to dry
- Reseal grout annually
- Fix any dripping fixture promptly
When to call us
Deep-set staining in shower grout usually needs pressurized cleaning followed by sealing. We handle shower walls and floors as part of tile and grout service.
Bottom line
Get the grout properly cleaned and sealed once, then maintain it with ventilation. Call for a free bathroom tile quote.
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