Keeping shower glass clear without chemicals

The white haze on shower glass is limescale — mineral deposit left behind when hard water evaporates. It is not dirt, it does not wash off, and by the time it is visible it has already started to etch the surface.

The good news is that it is entirely preventable, and prevention takes about thirty seconds.

Why it happens

Tap water carries dissolved calcium and magnesium. When a droplet dries on glass, the water leaves and the minerals stay. Repeat that several times a day for a year and the deposit builds into a bonded layer.

Worse, over time the mineral layer physically etches the glass surface. At that point no cleaner will restore it, because the damage is in the glass rather than on it. This is why prevention matters more here than anywhere else in a bathroom.

Soap makes it worse. Soap scum is a separate film that traps mineral deposits and gives them something to bond to. Liquid body wash produces markedly less of it than bar soap.

The thirty-second habit

One pass with a squeegee after each shower, top to bottom, while the glass is still wet. It removes almost all the water before it can evaporate, and there is nothing left behind to deposit.

Two things make the difference between doing it and not doing it:

• The squeegee lives in the shower. A tool stored under the sink is a tool that does not get used. Adhesive hooks or a built-in hanging hook are the whole reason those designs exist.
• It has to be quick. A ten-inch blade clears a standard screen in three or four passes. A small hand squeegee turns it into a chore, and a chore stops happening after a fortnight.

Follow with the extractor fan or an open window for ten minutes. Air movement finishes what the blade started.

Choosing the tool

Shower squeegees differ from window ones in three ways that matter.

Silicone rather than rubber. Silicone tolerates constant damp without perishing and does not streak on a warm surface. Rubber in a shower has a short life.

Around ten inches wide. Wide enough for few passes, narrow enough to work in a small enclosure and to fit the flat panel between a handle and a hinge.

A way of hanging it up. A built-in hook, a hole in the handle or an adhesive wall hook. A squeegee that lives on the shower tray gets knocked over and eventually goes under the sink.

One-piece silicone designs have the practical advantage of nothing to trap water and nothing to grow mould in a joint.

If the haze is already there

Light deposit will come off with white vinegar: warm it slightly, apply with a cloth, leave for a few minutes, then work it with a non-scratch pad and rinse thoroughly. Repeat rather than scrub harder.

Two warnings. Do not use vinegar on natural stone — it etches marble and travertine badly. And do not use a metal scraper or an abrasive powder on glass; the scratches are permanent and worse than the haze.

Heavy, long-standing deposit that has etched the glass will not come back to clear, whatever you use. At that point the honest answer is that the surface is damaged, and starting the squeegee habit stops it getting further.

Mirrors and tiles

The same tool does both. A quick pass over a mirror after a shower prevents the drying spots that otherwise need glass cleaner, and a pass down tiled walls removes the water that feeds grout mould.

Grout is the part of a bathroom that suffers most from standing water, and it is the part that is hardest to restore. Anything that gets water off the wall is doing more good there than on the glass.

Looking after the squeegee

Rinse the blade occasionally in warm water with a drop of washing-up liquid — body wash residue builds on silicone and makes it drag. Check the blade edge for nicks the same way you would on a window tool.

Suction-cup holders lose grip over time on textured tile. An adhesive hook on a flat surface holds far longer.

On the shelf

The shower tools, including the one-piece silicone types and the models with adhesive hooks, are on the shower and bathroom squeegees page. For household windows the window and glass page has the longer-handled tools, and if you are drying a wet-room floor rather than a screen, the small blades on the floor and deck page are the right shape.

Every listing carries the blade width, so you can measure the screen before ordering.