If you’ve been shopping around for better windows, you’ve probably run into the usual suspects: double glazing (still the norm) and triple glazing (marketed as the “next step up”). But what if there were a third option – one that delivers better insulation and soundproofing, without the bulky frames and overblown price tag?
Enter vacuum glazing, a new kind of window tech that’s changing the game for homeowners, designers, and renovators alike.
Built for Today, Ready for Tomorrow
Whether you’re buying your first home, updating a period property, or planning a sustainable new build, energy efficiency matters – and so do comfort, design, and ease of installation. Vacuum insulated glazing (VIG) offers a long-term solution that’s not only efficient but also helps meet the latest UK building regulations, including Part L (Conservation of Fuel and Power) and Part O (Overheating).
And the best part? Retrofitting with vacuum glazing is often far less disruptive – and more affordable – than you’d think.
Why Vacuum Glazing Works So Well
Let’s talk numbers for a second. Standard double glazing usually has a U-value (how well it insulates) of about 1.47 W/m²K. PassivGlas™ vacuum glazing comes in at a remarkable 0.49 W/m²K – meaning it keeps the heat in far more effectively. That’s thanks to its unique vacuum layer, which eliminates convection – one of the main ways heat escapes through windows.
There’s also a low-emissivity coating involved, which reflects heat and keeps things cosy inside without sacrificing natural light.
It Looks as Good as It Performs
One of the most surprising things about vacuum glazing is how slim it is. With a total thickness starting from just 6.15 mm, it looks like a single pane of glass but performs like top-of-the-line triple glazing – without the chunky frames or heavy weight.
Newer generations of vacuum glazing have also done away with visible extraction ports and use ultra-fine translucent micro-pillars to maintain the vacuum gap – so from an aesthetic perspective, it’s clean, minimal, and modern.
Soundproofing That Makes a Difference
Live near a busy road or in a noisy neighbourhood? PassivGlas™ offers up to 36 dB sound reduction – better than most double glazing, which averages around 31 dB. And if you opt for the Hybrid Ultimate version (essentially a VIG paired with another glass layer), you can bump that up to 41 dB. It’s a huge quality-of-life upgrade if noise is a daily frustration.
Strong, Secure, and Surprisingly Slim
Despite being thinner than both double and triple glazing, PassivGlas™ doesn’t cut corners on strength. The glass can be toughened or laminated and even meets PAS 24 security standards. So you’re not trading security for sleekness – you get both.
And unlike some bulky double-glazed units, vacuum glazing won’t suffer from that “pillowed” look where the panes bulge outwards. It stays flat, clean, and elegant.
Retrofit Without the Hassle
Replacing your windows doesn’t have to mean ripping everything out. One of the best things about PassivGlas™ is how easily it can be installed into existing frames, including traditional sash windows and modern uPVC systems. That means less mess, less disruption, and a faster install – with all the performance benefits.
Partnering with the Right People
If you’re interested in upgrading to vacuum glazing, The Vacuum Glazing Network Ltd works with certified suppliers across the UK who can handle everything from consultation to installation. So you get peace of mind from start to finish.
Quick Recap – Why Choose PassivGlas™?
✅ Slim, elegant design – as thin as 6.15 mm
✅ U-value as low as 0.49 W/m²K
✅ Up to 80% light transmission
✅ Up to 41 dB sound insulation with hybrid units
✅ 15-year warranty
✅ Can fit existing window frames – no full replacements needed
Want to Learn More?
If you’re ready to cut your energy bills, reduce noise, and modernise your space – without the bulk of triple glazing – vacuum glazing might be exactly what you’re looking for.
📞 Give us a call at 0151 332 4545
📬 Or get in touch via our website contact form.
