Maximally insulate without demolition work
Do you want to insulate better, but prefer not to break everything open or replace window frames? With BENGglas, you only replace the glass — the frames can just stay in place. With a U-value of up to 0.35, you save up to three times more energy than with double glazing, reduce your emissions, and make the indoors more pleasant: less cold, less noise, more peace.
- No need for new frames or (heavier) hinges and locks
- A pleasant indoor climate, all 4 seasons long
- Quieter living
- A better energy label and higher property value
- Slim construction, fits in existing frames
- Lasts up to 50 years
- Suitable for projects with subsidies or sustainability goals

Recommended products
Find a certified installer
BENGglas has an extensive network of over 150 certified installers across Europe, specializing in vacuum glass installations. This way, you’re always assured of a professional close to home! Want to get the best deal easily? Fill out our quote form and receive three competitive offers from the three nearest BENGglas dealers in your area!
More energy and CO₂ savings without demolition, with BENGglas
With a U-value of just 0.40, BENGglas far exceeds double glazing (approximately 1.1) and triple glazing (approximately 0.7). This means you insulate up to 3 times better than with double glazing and almost 2 times better than with triple glazing Less heat loss means directly lower heating costs and a significant reduction in your CO₂ emissions — on average, you save up to 750 kg CO₂ per year per house. That's good news for the environment and your wallet.
But the biggest advantage?
BENGglas is so thin (8.3 mm) and light that it fits into existing frames without modifications. No demolition work, no dust, no expensive renovations. This way, you not only keep the authentic appearance of your property intact but also save on costs and time.
In short: if you choose BENGglas, you choose the best insulation, maximum energy savings, lower CO₂ emissions, and hassle-free renovation. This makes BENGglas the smart, sustainable, and future-proof solution for any renovation project.
Up to 20 years warranty, 50 years comfort
BENGglas is designed to last for decades! With an expected lifespan of no less than 50 years, we offer a standard warranty of up to 20 years — that's twice as long as regular insulating glass.
If the insulating performance of your BENGglas windows unexpectedly decreases, we will provide replacement panes. This way, your investment remains sustainable and well-protected.
Want all the details? Check our warranty conditions in the documentation!
Frequently asked questions
How do I request a quote?
Under the heading ‘Dealers’, you will find an overview of all BENGglas dealers near you. Once you have contacted a dealer, they will prepare a quote for you. This quote includes both the glass and the necessary installation. If desired, additional work, such as painting, can also be included. This way, our dealers always offer a complete total solution.
All BENGglas dealers have sample panes, so you can view the glass and make an informed choice. Additionally, you are warmly welcome by appointment in our showroom to personally experience the possibilities.
Is there no dealer near you? Then ask your local glazier to contact BENGglas via info@bengproducts.nl.
Why should I choose BENGglas?
BENGglas is not ordinary glass – it is a revolutionary solution for sustainable and future-proof building. Compared to standard insulation glass, BENGglas offers unique advantages that directly improve both your home and the climate.
- Superior insulation: with a U-value starting from 0.35 W/m²K, BENGglas is twice as effective as triple glazing (0.70) and even three times better than double glazing (1.10). This means significant energy savings and lower heating costs.
- Long lifespan: while traditional glass lasts an average of 25 years, BENGglas lasts up to 50 years. Produce once, less CO₂, and half a century of benefits!
- Sustainable and environmentally friendly: thanks to less material use (30% less glass than triple glazing), BENGglas saves thousands of tons of CO₂ annually. This way, you actively contribute to a cleaner planet.
- Light and thin: at only 8.3 mm thick, BENGglas fits in almost any existing frame and allows for lighter hardware, making construction sustainable and efficient.
- A true climate hero: if all of the Netherlands switches to BENGglas, we can save up to 4.1 megatons of CO₂ annually — that's equivalent to 170,000 car trips from Amsterdam to Paris! Moreover, the production of BENGglas alone results in 24,000 tons less CO₂ emissions per year.
- A smart investment in the future: less energy consumption, less maintenance, and a longer lifespan make BENGglas a choice that benefits you for years – for yourself and for future generations.
In short: with BENGglas you choose maximum energy efficiency, sustainability, and a smart investment in the future. Make a difference, for your home and for our planet.
The enormous CO₂ benefit of a massive switch to BENGglas: this is what it really delivers!
If the whole of the Netherlands switches to BENGglas, we achieve a structural CO₂ saving of no less than 4.1 megatons per year — that is equivalent to 170,000 car trips from Amsterdam to Paris! In production alone, BENGglas saves more than 24,000 tons of CO₂ annually. For an average house, BENGglas means a saving of 1,800 kg CO₂ per year, which can amount to as much as 90,000 kg CO₂ per house over 50 years. This directly contributes to achieving our climate goals: it can realize more than 8% of the CO₂ reduction in the built environment by 2030 and helps the Netherlands become climate neutral by 2050. It is not just glass, it is a revolution in sustainable building.
How do I apply for a subsidy?
ISDE subsidy for individuals and businesses
Do you want to apply for the ISDE subsidy via RVO.nl? Then make sure you have the following items at hand:
- An invoice with a registration code, the contact details of the installation company, and the date of purchase and installation.
- Photos of the installation, plus proof of payment.
- The number of square meters of glass you have had installed (note: do not include extensions).
Important: you must submit your application within 24 months after installation.
EIA subsidy for business customers
Do you have a business? Then you must apply for the EIA subsidy within 3 months after installation via the eLoket of RVO.nl. Make sure you have everything ready on time so that you do not miss out on benefits.
Subsidy in Belgium
Do you live in Flanders? Then easily apply for your renovation premium via the online portal on Vlaanderen.be. You will need the certificate from your recognized contractor for this.
References
Are you curious where BENGglas has already been applied? Check out our references and discover the power of vacuum glass in practice. From carefully renovated monuments with special monument glass to sustainable new buildings and modern office buildings – BENGglas makes the difference for a greener future.
Get inspired and discover what we can do for your project!

BENGglas breathes new life into mill Woldzigt

Villa renovated with BENGglas
