Sealing windows & glazing · Perth
Windows that stay clear.
Perth reticulation throws mineral-heavy water across the glass, and left on bare glass it bakes on and slowly etches in for good. GlassProtect bonds a clear nano layer to the glass so water beads and sheets off instead of clinging: rain and a quick rinse do most of the work, the glass largely keeps itself clean, and it stays protected against the permanent etching that ruins untreated glass. This is exactly what the coating was built for.
What actually marks your windows
It is not dirt. It is the water.
The stuff that ruins windows in Perth arrives with the sprinklers, not the dust. Most of our reticulation runs on bore water, which is loaded with dissolved minerals. Overspray hits the glass, the sun dries it in minutes, and every cycle leaves a little more behind.
01
Mineral spotting
When a hard-water droplet dries in place it leaves its calcium, magnesium and silica behind as a spot. On a west-facing window in summer that happens fast, and the spots stack up faster than a clean can keep pace with.
02
Baked-on and stubborn
Heat sets those deposits hard. What started as a wipe-off spot turns into a cloudy film that ordinary glass cleaner slides straight over. People reach for cream cleanser and pads, which is where the real damage starts.
03
It ends in etching
Left long enough, hard water does not just sit on the glass, it starts to attack it. That is permanent etching: material loss you cannot clean away, only replace. The spotting is the early warning, and most people miss it.
Why cleaning alone loses: you are fighting the result, not the cause. Every rinse and dry cycle is another chance to spot. Protecting the surface changes what the water can do when it lands.
How it works
A clear layer bonded into the glass.
Glass is one of the few surfaces that carries reactive sites right at its face. GlassProtect condenses a covalent Si-O-Si layer straight onto them, around 75 to 100 nanometres thin, optically clear, and it lowers the surface energy so water, mineral film and oil can no longer grip. It is the one and only next-generation sol-gel surface coating in Australia. Nothing else in the category works on this principle.
It bonds in, it does not sit on
The layer chemically joins the glass surface rather than resting on top as a film. There is nothing to peel, cloud or wear off in a season, and because it is inorganic it does not yellow in the sun the way an organic coating would.
The glass largely cleans itself
With the surface energy lowered, droplets bead high and roll off at a low angle instead of clinging and drying in place. Rain and a quick rinse sheet away and carry loose dust and film with them, so the glass keeps itself clear between cleans and stays hands-off through the wet winter months. This is self-cleaning by physics, not by chemistry you have to keep buying.
It protects the glass from etching
Keeping mineral water from dwelling on the surface is what lets GlassProtect resist and delay the permanent etching that hard water would otherwise bond on and slowly eat into untreated glass. Glass is the one surface where we make that prevention claim plainly, because it is the one surface where it holds true. It does not stop physical scratching or every chemical, but it protects glass against the hard-water etching that ruins bare glass.
Where the edge lives
Built to survive the real world.
A coating on glass only earns its keep if it holds up to what the glass actually meets: the squeegee, the summer sun, the sprinkler chemistry and the road film. The protection sits right at the face, where all of that happens.
Cleaning & abrasion
Survives the scrub, not just the rinse
The real test is the squeegee, the cloth and the occasional pad, not gentle rain. GlassProtect is still beading after 3,000 wet-scrub cycles in comparable cream-cleanser testing, so it keeps working through the cleaning that wears thinner coatings off in weeks. When it is eventually due, it tops up without stripping.
Chemical
Stable to the cleaners you actually use
The bonded inorganic layer stays put through routine glass cleaners and the alkaline wash a professional window clean uses. It is more resistant, not immune, but it does not hydrolyse and fail from the inside the way a pore-based sealer does under the same exposure.
UV
It will not yellow or chalk
Windows live in full Perth sun. Because the layer is inorganic it carries nothing for UV to break down, so it does not yellow, cloud or chalk the way an organic film does. Far more UV resistant, not UV proof, and that is the whole point of building it from mineral chemistry.
Oil & road film
The greasy film lifts instead of clinging
Windows near roads and driveways pick up an oily traffic film that plain water skates over and leaves behind. GlassProtect repels oil, not just water, so that film sits on the surface and lifts in a normal clean rather than smearing across the glass.
Proven, not promised
Three times more durable.
Durability on glass means one thing: how long the coating keeps shedding water under real cleaning. On that measure GlassProtect is 3 times more durable than the leading brand, and it is still beading well past 3,000 scrub cycles.
- Still beading at 3,000 scrub cycles. Around 3 times slower repellency loss than the leading brand in comparable cream-cleanser abrasion testing.
- Optically clear. The glass looks like clean glass. The coating changes how water behaves, not how the window looks.
- Registered and backed. Every Extera seal is documented under a registered JUMBOGUARD guarantee.
Where we are straight with you
What a glass coating cannot do.
It cannot undo etching that is already there
If hard water has already etched the glass, that is material lost and no coating cleans it back. We seal sound glass to protect it from here on. We do not seal over damage and pretend it is fixed.
You will still clean the windows
This is not maintenance free. It makes cleaning far easier and less frequent, because rain and a rinse do most of the work and the glass largely keeps itself clean, but glass in the weather still needs the occasional wash. It changes the effort, not the existence of it.
The beading fades before the protection does
The visible beading eases off before the barrier does. If water stops beading, treat that as a prompt to re-test on a freshly cleaned patch, not proof the coating has gone. Often the bead returns once the glass is clean.
Questions people ask
Windows, answered.
Will the glass really keep itself clean?
To a real degree, yes. GlassProtect lowers the glass surface energy so water beads and sheets off instead of clinging, which means rain and a quick rinse carry loose dust and film away and the glass looks clearer for longer between cleans. It is not maintenance free, and glass in the weather still needs the occasional wash, but day to day it does much of the work itself. And underneath that, the sound glass stays protected against the permanent etching that ruins untreated glass.
Does sealed glass still need any upkeep?
Yes, and here is the honest version. It is not maintenance free. What changes is how much the glass does for itself: because water beads and sheets off instead of clinging, rain and a quick rinse do most of the everyday work, and the glass looks clearer for longer between cleans with far less hands-on effort. Glass in the weather still gets the occasional wash. What you are really buying is protection. The sound glass stays guarded against the permanent etching that bonds on and ruins untreated glass for good.
Does it hold up to bore and reticulation water?
That is the main challenge in Perth. Bore and reticulation water is high in minerals, so sprinkler overspray dries hard and, left on bare glass, bakes on and slowly etches in. On coated glass, water beads and sheets off instead of clinging, so rain and a normal clean lift the overspray and the glass largely keeps itself clean, while the sound glass stays protected against the permanent etching that would otherwise bake on and ruin it.
Can it fix windows that are already etched or spotted?
No. Once hard water has etched into the glass that is material loss, and no coating cleans it back. We assess the glass first. If it is sound we seal it to protect it from here on. If it is already etched we tell you straight before you spend a cent.
How long does a window coating last?
It is built to survive real cleaning, and it is registered under the JUMBOGUARD guarantee. It wears back slowly rather than failing all at once, and it tops up without stripping when it is eventually due.
Does the coating change how the glass looks?
No. It is a clear nano layer that changes the surface energy, not the appearance. The glass looks like clean glass. What changes is how water, dust and mineral film behave on it.
Does it work on high or facade glazing?
Yes. Facade and upper-storey glass is the hardest and most expensive to clean, so the payoff is bigger there: rain and overspray sheet off and carry loose dust with them, so it looks clearer for longer between cleans.
Keep reading
Related surfaces.
Glass family
Frameless glass
Balustrades, pool fencing, facades and windows. The same coating, built for architectural glass out in the weather.
Read the guideGlass family
Solar panels
PV glass, where dust and film cut output. How a shed-and-clean surface helps them stay working.
Read the guideGlass family
Mirrors
Bathroom and vanity mirrors that spot and fog. Keeping the reflective face clear for longer.
Read the guideWant the full science?
The chemistry, the test standards and the head-to-head against uncoated glass, rain-repellents and films.
Get a quote
Seal the glass. Let the rain do the work.
We assess your windows, seal the sound glass with GlassProtect, and register it under a JUMBOGUARD guarantee: 10 years on new glass, 5 years on existing glass. Confirmed price before you book.