To clean glass shower doors, wet the glass, wash it with a few drops of dish soap in warm water and a soft cloth or non-scratch sponge, rinse, then squeegee top to bottom and dry the edges. For white hard-water spots on plain, uncoated glass, a vinegar solution will dissolve them. Coated glass and metal trim need gentler treatment.
The best cleaning trick is the boring one: a squeegee after every shower. Most of what people spend an hour scrubbing off is just dried shower water, and a 20-second pass stops it forming.
What you need#
- A rubber-bladed squeegee
- Two microfiber cloths (one damp, one dry)
- Dish soap
- A non-scratch sponge
- Distilled white vinegar and a spray bottle, for hard-water spots on uncoated glass only
- An old soft toothbrush for the track and hinges
Skip scouring powder, steel wool, green scrub pads and razor blades. Sterling, a Kohler brand, says in its shower door care guide never to use scouring powder, pads or sharp instruments on the glass or metalwork.
How to clean glass shower doors step by step#
- Clear the ledges and pull bottles out of the way so you can reach the bottom corners.
- Run the shower for a minute or rinse the glass with the handheld. Warm, wet residue lifts far more easily than dry.
- Mix a teaspoon of dish soap into a bucket or spray bottle of warm water. Wash the glass in sections with the sponge, working from the top down.
- Do the inside face properly. The outside usually only has fingerprints; the inside has the soap film.
- Rinse each section before it dries. Soap that dries on the glass leaves a haze of its own.
- Squeegee from top to bottom in overlapping strokes, wiping the blade between passes.
- Dry the bottom 10 cm or so and the frame with a dry cloth. Water pools there and leaves the worst spots.
Do this as part of your weekly bathroom clean. If you squeegee daily, every two weeks is often enough.
How to get hard water spots off shower glass#
White, chalky spots that don't move with soap are mineral deposits. On plain, uncoated glass, an acid dissolves them:
- Mix equal parts warm white vinegar and water in a spray bottle. Add a few drops of dish soap so it clings to the vertical glass.
- Spray the spotted area and keep it wet for several minutes, re-spraying as it runs off.
- Wipe with the non-scratch sponge in small circles, then rinse well and squeegee.
- Repeat on stubborn patches. Old, thick buildup usually takes two or three rounds; it won't all go in one.
Keep the vinegar off the frame, hinges and handle. Sterling's guide says cleaners with acids, ammonia, bleach or solvents can damage the finish on metal parts, and that harsh cleaners may affect the warranty. If your shower walls or bench are marble, limestone or travertine, keep vinegar off those too: the Natural Stone Institute warns that vinegar and other acids can dull or etch calcareous stone.
Does your shower glass have a protective coating?#
Many newer doors come with a factory coating that makes water bead and run off. Kohler's own CleanCoat page says not to use abrasive cleaners on treated glass, and other brands have similar rules.
How to tell: check the installation paperwork or the maker's name etched in a corner of the panel, then look up that product's care page. If water still beads into round droplets on clean glass, the coating is probably still working. On coated glass, stick to soap and water or the cleaner the manufacturer names, and skip melamine sponges (they're a fine abrasive).
If a cloudy patch won't change with gentle cleaning, it may be etched glass or worn coating, not a deposit, and scrubbing won't fix either. Ask the installer before you try anything stronger.
Don't forget the track, seals and hinges#
Sliding doors collect gunk in the bottom track: hair, soap paste and sometimes black mildew. Spray it with the soapy water, scrub with the toothbrush, and wipe it out with a cloth wrapped around a butter knife or chopstick. Many tracks have small drainage holes; poke them clear so water can escape.
Wipe the vinyl seals and the strip along the bottom of a hinged door, where water sits after every shower. While you're in there, check that the door still closes smoothly. If it catches, drags or a hinge feels loose, get it looked at. Don't try to lift or rehang a heavy glass panel yourself.
How to keep shower doors clean longer#
- Squeegee the inside after every shower. Sterling recommends this to prevent water spots, and wiping the door dry to avoid soap and lime buildup in hard-water areas.
- Leave the door ajar after showering so the enclosure can air out.
- Run the bathroom exhaust fan during and after showers.
- Switch to liquid body wash if you use bar soap. Bar soap tends to leave more film on glass.
- If spots come back within days, your water is hard. The same deposits are probably clogging your showerhead too.
Hang the squeegee on a hook or suction cup inside the shower, so it's in your hand before you've thought about skipping it.
Common questions#
Can I use Windex on glass shower doors?#
On uncoated glass, yes. Sterling's guide lists ordinary glass cleaners, Windex among them, as suitable for the glass. Glass cleaner won't cut thick soap scum or mineral spots, though, so use it as a final polish after washing.
Can you use a razor blade on shower glass?#
It's a common tip, but it's risky. Shower doors are tempered glass, and a blade can leave scratches, especially if there's grit under it. It can also scrape off a factory coating. Sterling advises against sharp instruments. Use vinegar on uncoated glass and patience instead.
Set a recurring reminder in ChoreLists.com for the weekly wash and a monthly descale if you have hard water, and pair it with your grout cleaning so the whole shower gets done at once.