How to Clean Shower Grout in a NYC Apartment
05.08.2026
To clean shower grout, spray the grout lines with a paste of baking soda and water, let it sit 10 minutes, then scrub with a stiff nylon brush in small circles and rinse with warm water. For stubborn discoloration, follow with an oxygen-bleach paste. Work top to bottom so runoff doesn't re-dirty cleaned lines.
What you'll need
- Baking soda
- Oxygen bleach powder (sodium percarbonate), for set-in stains
- A stiff nylon grout brush or an old toothbrush
- A spray bottle of warm water
- White vinegar (for mineral buildup, not on stone tile)
- Microfiber cloths
- Rubber gloves
- A small bucket
Step by step
- Run the shower hot for a minute or open a window if yours opens; warm, damp grout releases grime faster than dry grout. In a small NYC bathroom, crack the door for airflow.
- Mix baking soda with just enough water to make a spreadable paste.
- Spread the paste along the grout lines with your gloved finger or the brush, starting at the top row of tile.
- Let it sit about 10 minutes so it can loosen soap scum and body oils.
- Scrub each grout line in short back-and-forth and circular strokes. Let the bristles do the work; pressing harder mostly tires your hand.
- Rinse with warm water from the spray bottle and wipe with a microfiber cloth.
- For lines still gray or orange, mix oxygen bleach powder with warm water into a paste, apply, wait 15 minutes, scrub again, and rinse thoroughly.
- For chalky mineral scale on the grout, wipe with white vinegar on ceramic or porcelain tile only, then rinse. Dry the walls with a towel to slow regrowth.
What NOT to do
Do not use vinegar or any acid on marble, travertine, or other natural-stone tile common in some prewar building renovations; acid etches stone permanently and dulls the surface. Skip metal brushes and abrasive scouring pads, which scratch tile glaze and gouge grout. Never mix oxygen bleach or chlorine bleach with vinegar or ammonia; the combination can release hazardous gas, and a windowless bathroom traps it. Don't drown fresh grout or a re-caulked seam in standing water before it has cured. And resist a wire brush on the soft caulk line where wall meets tub; you'll shred it.
When to call a pro
DIY handles surface grime and light discoloration. But if grout is crumbling, missing, or the caulk seam is peeling and letting water behind the tile, that's a repair job, not a cleaning one, and worth flagging to your landlord before hidden moisture damage spreads to the wall. Deep-set staining across an entire prewar bathroom, or a rental you're prepping for a move-out inspection, can also eat an entire weekend. If you'd rather hand it off, book apartment cleaning with CleanWhale and we'll bring the tools and time to it.
FAQ
Does vinegar clean grout?
Diluted white vinegar helps dissolve chalky mineral scale and soap scum on ceramic and porcelain grout lines. Never use it on natural stone, and rinse well afterward. For general grime, a baking soda paste is gentler on the grout itself.
Why does my shower grout keep turning orange or pink?
That tint usually comes from mineral content in the water or residue that thrives in constant dampness, common in small bathrooms with a non-opening window and a steam radiator adding humidity. Wiping the walls dry after showering and improving airflow slows it down.
Can I use a steam cleaner on shower grout?
A handheld steam cleaner can lift grime from ceramic and porcelain grout without added product, which suits renters short on storage. Keep it moving, avoid natural stone, and test a small area first, since prolonged heat on old or cracked grout can worsen loose spots.
How often should I clean shower grout?
A quick brush of the grout lines every couple of weeks prevents buildup that needs heavy scrubbing later. A wipe-down of the walls after each shower stretches the time between deep cleans considerably.
Related guides
