Why Choose the KingDouble Glazing System?
The answer is simple: we only replace the glass. Your existing window and door frames stay exactly as they are.
That means no costly frame replacements, no unnecessary structural alterations, and a faster, more affordable upgrade to high-performance double glazing.
- 50+ Years Combined Experience
- Beat Any Quote by 30%
- 10-Year Warranty
- Fits Most Existing Frames
WHY RETROFIT?
Stop. Don't Overpay.Upgrade What You Already Have.
No Structural Work
No demolition, no painting, no plastering. Your frames stay where they are.
Suits Most Domestic Frames
Custom adaptors fit timber, aluminium, and steel windows.
Installed in One Day
Most Melbourne homes done by sundown.
Up to 70% Quieter
Acoustic glass cuts traffic and tram noise.
50–55% Less Heat Loss
Compared to standard single glazing — lower bills, warmer rooms.
We Beat Any Quote by 30%
Send us a real competitor quote. We come in 30% cheaper, in writing, with the 10-year warranty.
About our adaptors
We use special fittings to attach new glass to your existing frame. Our frame reduces the glass size you see by about 40mm overall in height, and 20mm per side, approximately — that is the only visible change. No ripping out, no plastering, no mess.
This saves you thousands compared to full window replacement.
About our adaptorsReduces the glass you see by ~40mm in height, 20mm each side. Tap to read more.
We use special fittings to attach new glass to your existing frame. Our frame reduces the glass size you see by about 40mm overall in height, and 20mm per side, approximately — that is the only visible change. No ripping out, no plastering, no mess.
This saves you thousands compared to full window replacement.
Our Process
Simple and transparent — from quote to installation.
Request a Quote
Fill out our online quote form with your measurements and requirements.
Review & Proceed
If you're happy with the estimate, simply email your quote through to us to proceed.
Site Visit
We'll contact you to arrange a convenient time for a site inspection and final measure.
Final Confirmation
Once all sizes are confirmed, we'll lock everything in and schedule your installation.
Reduces the glass you see by ~40mm in height, 20mm each side. We'll confirm exact measurements on site.
Get Your Price.
In Minutes Online.
We beat any genuine quote by 30%. That's a promise in writing.
Start My Quote →Enter your window sizes · See your price instantly
FAQ
Common Questions
Plain answers, no jargon.
Will this fit my existing windows?
Will this fit my existing windows?
Almost always — we retrofit timber, aluminium, and steel frames, and tell you free if yours can't take it.
How long does it take?
How long does it take?
Most jobs are done in a single day, or two for large homes.
How much does it cost?
How much does it cost?
Most Melbourne homes land between $2,400 and $6,000 — use our Instant Estimate for your exact range.
What's the warranty?
What's the warranty?
10 years on glass and workmanship, guaranteed in writing on every job.
What if I already have a quote from someone else?
What if I already have a quote from someone else?
Send us any genuine quote and we'll beat it by 30%, guaranteed in writing.
Free Advice
Got a question
we haven't covered?
Call us directly. Free advice, no sales pitch. 25+ years in glazing — we'll give you a straight answer.
Call Us — 0406 470 595What Else We Do
We're glaziers. We do the lot.
Broken window right now? We do emergency glass repair across Melbourne.
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Meet the Owner
Tas Markou
Founder & Master Glazier
Tas grew up in glass. His father was a glazier and he was doing installs as a kid. Over 25+ years he built and ran two double glazing factories, with 40+ staff at their peak.
Along the way he found a way to drop the price — because most companies charge far more than families can afford. Today he runs King on one promise: transparent quoting, fair pricing, and a 10-year warranty on every job.
If we can't beat any genuine quote by 30%, I'll tell you straight. Stop. Don't overpay. — Tas