Sealing guide · Perth · glass failures
Why is my shower glass cloudy and won't come clean?
If no cleaner will shift it, it has usually stopped being dirt and become damage: hard-water scale that bonded onto the glass and started to etch the surface itself, which is permanent. Here's how to tell what will still wipe off, what won't, and how to keep the next screen from getting there.
The short answer
Cloudy usually means one of three things.
Cloudy shower glass is almost always hard water leaving minerals behind every time it dries. In Perth that happens fast, because scheme water, bore water and reticulation all run heavy with calcium and silica. But "cloudy" covers three different problems, and they don't come off the same way. Two of them will still clean up. One won't, because it isn't on the glass, it's in it.
Comes off
Soap scum
Soap plus hard water makes an oily, greasy film that clings and hazes the glass. It sits on top, so the right cleaner shifts it. Because it's oily, a plain water spray or a squeegee alone won't, which is why it feels like nothing works.
Comes off
Fresh mineral spotting
The white spots and cloudiness from dried hard-water drops. Caught reasonably early it's a deposit sitting on the surface, and a mild acidic cleaner dissolves it. The longer it stacks up, the more stubborn the silica in it gets.
Does not come off
Etched glass
Left long enough, that scale doesn't just sit there. The hard water attacks and dissolves the glass surface, pitting it. That permanent haze is loss of the glass itself. No cleaner fills it back in, and eventually the panel gets replaced.
Find out in 30 seconds
The wet-glass test.
Before you buy another bottle of anything, do this. It tells you straight away whether you're fighting something that comes off or something that's already permanent.
Wet the whole panel
Splash or spray clean water over the cloudy area so the glass is fully wet, and look at it while it's still running.
If it goes clear when wet, it's etched
If the cloudiness disappears while the glass is wet and creeps back as it dries, the surface itself is pitted. Water fills the tiny pits and it looks clear for a moment, then dries and hazes again. That's damage in the glass. No cleaner reverses it.
If it stays cloudy when wet, it's on top
If the film or haze is still there under running water, it's scum or scale sitting on the surface. That's the good news outcome: the right clean will get it off. See below for what actually shifts each one.
If it's still on top
What actually shifts it.
For scum and fresh scale, the trick is matching the cleaner to the grime. Most people reach for one spray and scrub harder when it fails. The two problems need opposite chemistry.
Soap scum
A degreaser, then a squeegee
Scum is oily, so it needs something that cuts oil, not acid. A dedicated bathroom degreaser or a bit of dish soap, left to dwell a minute and worked with a non-scratch pad, breaks the greasy film. Rinse, then squeegee dry so the next lot of water doesn't just dry back on. Never mix an acid cleaner with anything containing bleach.
Fresh mineral spotting
A mild acid, with care
Mineral scale is alkaline, so a mild acidic cleaner dissolves it: a purpose-made hard-water remover, or white vinegar warmed slightly for light cases. Give it dwell time rather than muscle. Keep acids off natural-stone hobs, chrome and anodised frames, rinse thoroughly, and finish with a squeegee. If it doesn't budge after a proper dwell, you're likely past cleaning and into etching.
The honest catch: even when you win, you're back here in a few weeks. Bare glass gives the minerals nothing to stop them keying in again, so the cycle just restarts. That's the real problem worth solving.
Why it keeps happening
Bare glass gives minerals something to grip.
Glass looks smooth, but at a microscopic level its surface is reactive and slightly open, and hard-water minerals key straight into it. Every drop that dries leaves its load behind, it bonds on, and given time it starts to dissolve the glass. A coating changes what the minerals have to hold on to.
On bare glass, scale bonds on and etches in
Hard water still carries minerals no matter what. On uncoated glass they land, bond to the reactive surface and, left to dwell, slowly etch the glass for good. That's the road to a cloudy screen you can't clean.
A coating bonds a clear layer to the glass first
GlassProtect condenses a clear nano layer onto the glass and lowers its surface energy. Water sheets and beads off with far less dwell, so fewer minerals are left behind, and the ones that do land can no longer grip. They sit loosely and wipe away instead of etching in.
And it repels oil, so scum can't cling either
Because the same layer repels oil, not just water, the greasy soap scum that clouds shower glass can no longer key on. Minerals and soap scum can no longer grip, so cleaning goes from scrubbing and chemicals to a single wipe.
What to do next
Clean or replace first. Then coat it.
The order matters. A coating protects clear glass, it doesn't rescue cloudy glass, so coating over haze just seals the haze in. Get the panel back to clear first, then lock that in.
- If the wet test says it's on top, deep-clean it back to clear with the right cleaner for the grime, then coat it so it stops coming back.
- If the wet test says it's etched, that panel is spent. Replace it, then coat the new glass on day one so the new screen never gets there.
- Either way, GlassProtect goes on clean or new glass, registered under the JUMBOGUARD guarantee, so the fight becomes a quick wipe instead of a razor blade and a bottle of acid.
The honest limit
A coating can't undo etching.
We'll say it plainly, because plenty of glass coatings won't. Nothing we or anyone else applies reverses glass that's already etched. If the wet test showed the haze coming back as the panel dries, no coating brings that surface back, and coating over it just traps the cloudiness. A coating is prevention, not a repair. Its whole job is to keep sound glass from ever reaching that point, and to make a screen you can keep clear with a wipe rather than a fight. It is not a screen that never needs a wipe: constant Perth hard water with no upkeep can still leave surface spots, but on coated glass they wipe away instead of bonding on and etching in. Coat clear glass, keep it wiped, and it stays clear for years. Coat cloudy glass and you've sealed in the cloud.
Cloudy glass, answered
The questions people actually ask.
How do I know if my shower glass is etched or just dirty?
Wet the whole panel and look at it while it's wet. If the cloudiness disappears when the glass is wet and comes back as it dries, the surface itself is etched and the damage is in the glass, not on it. No cleaner brings that back. If the glass still looks cloudy or filmy when it's wet, you're looking at scum or scale sitting on top, which the right clean will shift.
Can etched shower glass be cleaned or polished back to clear?
Not reliably. Once hard water has actually dissolved and pitted the glass surface, there's no cleaner that fills it back in. Cerium-oxide polishing can sometimes lighten very light etching, but it's slow, easy to distort the glass with, and does nothing past the surface. For a badly etched screen, replacement is usually the honest answer. The move that matters is coating the new or freshly cleaned glass so it doesn't get back to that point.
What's the difference between soap scum and hard-water etching?
Soap scum is an oily film that sits on top of the glass, made when soap reacts with hard water. It clings and hazes, but it can be removed. Etching is the hard water attacking and dissolving the glass surface itself over time. Scum is dirt on the glass. Etching is damage in the glass. Scum comes off. Etching doesn't.
Why does my shower glass go cloudy so fast in Perth?
Perth is hard-water country. Scheme water, bore water and reticulation all carry a heavy load of calcium and silica. Every time a drop dries on the glass it leaves those minerals behind, and a shower dries out several times a day. Without a coating and with no wiping, that scale builds, bonds on and eventually starts to etch. The water here simply gets glass there faster than in soft-water places.
Will a glass coating fix my cloudy glass?
A coating won't reverse damage that's already there. If the glass is etched, coating over it just seals in the haze. What a coating does is stop the next screen getting there. On clean or new glass, GlassProtect bonds a clear layer to the surface so minerals and soap scum can no longer grip. You get far less spotting, and what does land wipes off instead of bonding on and etching in. The right order is clean or replace first, then coat.
Keep reading
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We'll assess your glass, tell you straight whether it cleans up or needs replacing, and coat it with GlassProtect once it's clear, registered under a JUMBOGUARD guarantee: 10 years on new glass, 5 years on existing glass. Far less spotting, an easy wipe, and real protection against the etching you can't clean away. Confirmed price before you book.