How to Get Rid of Mold in the Shower (NYC Apartment Guide)

To remove mold from your shower, spray the grout, caulk, and tile with a mold-and-mildew cleaner or a baking-soda paste, let it sit 10 minutes, scrub with a stiff nylon brush, then rinse and wipe dry. Repeat on stubborn spots. Afterward, ventilate the bathroom and squeegee walls after every shower to keep it from coming back.

What you'll need

A mold-and-mildew bathroom cleaner (check the label for the surfaces it lists), or baking soda plus white vinegar
A stiff-bristle nylon brush and an old toothbrush for grout lines
Rubber gloves and eye protection
A spray bottle
Microfiber cloths and a squeegee
A box fan or a way to move air (many NYC bathrooms have a non-opening window or a weak vent)

Step by step

Open the door and run the exhaust fan, or set a box fan in the doorway. If your only window doesn't open, keep the bathroom door propped and the fan pointed out.
Put on gloves and eye protection. Never mix a bleach-based product with vinegar or ammonia — the fumes are hazardous in a small, poorly ventilated room.
Spray the affected grout, tile, and caulk. For a gentler option, make a paste of baking soda and water, spread it on, then mist with white vinegar.
Let the product dwell for the time stated on its label (usually 5-10 minutes) so it can penetrate the porous grout.
Scrub grout lines with the stiff brush and tight corners with the toothbrush. Work top to bottom.
Rinse thoroughly with warm water, then wipe every surface dry with a microfiber cloth.
For discolored caulk that won't come clean, the mold has grown into it — that caulk needs to be cut out and replaced, not scrubbed.
Finish by squeegeeing the walls and leaving the fan running 20-30 minutes.

What NOT to do

Don't use a wire brush or an abrasive scouring pad on tile or a fiberglass tub surround — you'll scratch the glaze and create rougher spots where mold takes hold faster. Don't blast old, crumbling grout with a pressure sprayer; you'll drive water behind the tile and into the wall. Don't paint or caulk over mold to hide it — it keeps growing underneath. And don't run a bleach product with the door shut and no airflow; that's how a small bathroom becomes a fume trap.

When to call a pro

DIY handles surface mold on grout, tile, and caulk. But if dark growth keeps returning within days, spreads across a wall larger than roughly 10 square feet, or you see it creeping past the tile onto painted drywall or the ceiling, that points to a moisture problem behind the wall — a job for your landlord and possibly a remediation specialist, not a scrub brush. Report persistent leaks in writing so your landlord has to act. If you'd rather hand off a deep bathroom scrub-down and keep the surfaces from getting to that point, book apartment cleaning with CleanWhale.

FAQ

Does vinegar kill mold in the shower?

White vinegar is a common household cleaner people use to loosen mildew stains from grout, and it's gentler on surfaces than bleach. It's not a registered disinfectant, so treat it as a cleaning aid: scrub, rinse, and dry rather than expecting a spray-and-walk-away fix.

Why does mold keep coming back in my apartment shower?

Mold needs moisture, and small NYC bathrooms with weak vents or a window that won't open trap it. If you're not ventilating and drying the walls after each shower, spores settle back into damp grout within days. Squeegeeing and running a fan are what actually break the cycle.

Can I just replace the moldy caulk myself?

Yes, if the mold has grown into the caulk. Cut out the old bead with a utility knife, let the area dry fully, and apply a mildew-resistant silicone caulk rated for bathrooms. It's an afternoon job and cheaper than repeated scrubbing.

Is shower mold a landlord problem or mine?

Routine surface mildew from showering is usually yours to clean. But mold driven by a leaking pipe, failing grout, or poor ventilation is a building-maintenance issue. Document it and notify your landlord in writing.

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