Extra Clear
BENGglas Extra Clear is the clearest vacuum glazing in the lineup. It’s almost as transparent as single-pane glass, but with an insulation value of U=0.50. That means more natural light, free solar heat, and lower heating costs.
And the best part? It fits right into existing window frames. This makes it ideal for historic buildings: the original appearance is preserved, while comfort is significantly enhanced.
- Extra-clear vacuum glazing
- For extra daylight and solar heat (LTA=83, G=0.68)
- Maximum insulation (U=0.50)
- The best choice for historic renovations
- Fits into existing window frames
- U-value tested by IFT Rosenheim (2025)
Differences at a glance
| BENGglas | Double glazing | Triple glazing | |
|---|---|---|---|
|
U-value (W/m²K) |
>0,35 | 1,10 | 0,70 |
|
Thickness from (mm) |
6,7 | 21 | 38 |
| Fits existing window frames | Yes | Sometimes | No |
| Tempered |
Standard EN3569 Except for BENGglas 6,7 mm (half tempered) |
Optional | Optional |
|
Light Transmission (LTA in %) |
> 83 | 80 | 65 |
|
Solar Heat Gain (G-value) |
>0,33 | 0,76 | 0,52 |
|
Sound Insulation Rw (C;Ctr) dB |
36 (–2; –3) to 41 (-2;-6) for BENGglas Hybrid |
31 (-1;-4) | 33 (-2;-6) |
| Insulation degradation at horizontal tilt (%) | 0 | 60 | 40 |
| Expected lifespan (years) | 50 | 20 - 25 | 30 |
| U-value degradation over time? | No | Yes | Yes |
| BENGglas Extra Clear | BENGglas Single Coated | BENGglas Double Coated | BENGglas Triple Coated | BENGglas Monu | BENGglas Monu Restover | BENGglas Solar Control | BENGglas SUN | |
|---|---|---|---|---|---|---|---|---|
|
U-value (W/m²K) |
0,50 | 0,40 - 0,50 | 0,40 | 0,35 | 0,50 | 0,50 | 0,50 | 0,50 |
|
Thickness from (mm) |
8,3 | 6,7 | 8,3 | 8,3 | 8,3 | 12 | 10,3 | 14 |
|
Maximum dimensions (in mm) |
2.350 x 4.150 | 2.350 x 4.150 | 2.350 x 4.150 | 2.350 x 4.150 | 2.350 x 4.150 | 1.500 x 2.500 | 2.350 x 4.150 | 1.500 x 2.500 |
| Light Transmission (LTA %) | 83 | 78 | 70 | 68 | 83 | 83 | 45-47 | Adjustable |
|
Solar Heat Gain (G) |
0,68 | 0,58 | 0,39 | 0,33 | 0,68 | 0,68 | 0,29 | Adjustable |
| Sound Insulation Rw (C;Ctr) dB |
36 (-2;-3) up to -41 dB (-2;-6) in the hybrid version |
36 (-2;-3) up to -41 dB (-2;-6) in the hybrid version |
36 (-2;-3) up to -41 dB (-2;-6) in the hybrid version |
36 (-2;-3) up to -41 dB (-2;-6) in the hybrid version |
36 (-2;-3) up to -41 dB (-2;-6) in the hybrid version |
39 (-2;-3) |
36 (-2;-3) up to -41 dB (-2;-6) in the hybrid version |
39 (-2;-3) |
| Properties |
Extra clear Extra thermal Extra light |
Clear Color-neutral glass Ultra thin: > 6,7 mm |
Solar control glass |
Best U-value Extra solar control Commercial buildling |
Heritage glass (light drawn) |
Heritage glass (strongly drawn) |
Solar control glass | Energy-generating glass |
Everything in one convenient overview? Download our brochure
References
Are you curious about where vacuum glazing is already being used? Check out our references and discover how BENGglas is used in all kinds of projects—from historic buildings and protected heritage sites to sustainable new construction, canal-side homes, and modern offices.
In this way, pane by pane, we’re helping to create energy-efficient buildings with lower CO₂ emissions.
BENGglas in ‘The Art of Living’ with the sustainability of a 100-year-old building
Sustainability of modern office building
Villa renovated with BENG glass
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!
Frequently asked questions
How do I request a quote for vacuum glazing?
At BENGglas, we understand that you don’t want to spend a lot of time getting a fair price comparison.
By filling out our quote form , you’ll immediately receive three quotes from three authorized dealers in your area. These quotes include both delivery and installation of the vacuum glazing.
Would you rather choose which dealers provide you with quotes? That’s easy, too.
Useour Dealer Finder byentering your ZIP code. You’ll immediately see a list of BENGglas dealers in your area, including their contact information and a dedicated page with a quote form. If desired, additional services, such as painting, can also be included. This way, our dealers always offer a complete, all-in-one solution.
All BENGglas dealers have sample panes available, so you can view the glass and make an informed choice. You’re also welcome to visit our showroom by appointment to experience the possibilities in person.
Is there no dealer near you? Then ask your local glazier to contact us directly.
What are the benefits of vacuum glazing?
BENGglas: The Future of Insulating Glass
Vacuum glazing is a revolutionary solution that goes beyond traditional insulating glass. BENGglas offers unmatched benefits for both the environment and your living comfort, making it an ideal choice for sustainable construction projects and renovations.
Unmatched Insulation
BENGglas has an exceptional U-value starting at 0.35 W/m²K, making it twice as efficient as triple-pane glass (0.70) and three times better than double glazing (1.10). This results in less energy loss, lower energy costs, and a much more comfortable home that stays pleasant in both winter and summer.
Consistent Performance in All Positions
Many types of insulating glass lose their effectiveness when installed at an angle, but BENGglas performs excellently regardless of the installation angle. This makes it ideal for sloped skylights or other challenging applications where other types of glass may perform less effectively.
Long-Term Durability
Unlike standard glass, which typically needs to be replaced after 25 years, BENGglas has a lifespan of up to 50 years. This means you’ll need to replace your windows less often, which not only saves money but also reduces CO₂ emissions from glass production.
Excellent Sound Insulation
BENGglas offers excellent sound insulation, with a rating of 36 to 42 dB. This significantly outperforms double glazing (31 dB) and triple glazing (33 dB), allowing you to enjoy a quieter home. Ideal for homes along busy roads or in urban environments.
Year-Round Comfort, Without Fluctuations
Thanks to the thermal efficiency of BENGglas, your home stays at a comfortable temperature all year round. In the summer, it keeps the heat out, while in the winter it keeps the heat in—without drafts or temperature fluctuations.
Condensation Is Not a Problem
BENGglas features an innovative edge seal that prevents condensation from forming on the inside of your windows. This not only keeps your windows clear but also prevents moisture problems and mold growth in your home.
Perfect for Renovations
At just 8.3 mm thick, BENGglas is thinner and lighter than traditional insulating glass, allowing it to fit seamlessly into existing window frames. This saves on the cost of replacing window frames and makes renovations easier and faster.
A Sustainable Choice for the Future
If the entire Netherlands were to switch to BENGglas, it would save up to 4.1 metric tons of CO₂ per year—equivalent to the CO₂ emissions from 170,000 car trips from Amsterdam to Paris. The production of BENGglas itself is also environmentally friendly, with annual CO₂ savings of 24,000 metric tons thanks to green energy and a more efficient production process.
A Smart Long-Term Investment
BENGglas not only provides excellent insulation and enhances living comfort, but it also increases the value of your home and contributes to a better energy rating. This makes it an investment that pays for itself quickly, both in terms of savings and home value.
With its advanced technology, long lifespan, and positive impact on the environment, BENGglas is the perfect choice for anyone who wants to invest in a more sustainable, energy-efficient, and comfortable home.
Can I become a BENG glass dealer?
Thank you for your interest!
We are always looking for enthusiastic professionals who are just as much a fan of top quality and sustainable insulation glass as we are. But you don't become a BENG glass dealer overnight. Because we stand for quality, service and craftsmanship, we deliberately choose a carefully selected dealer network.
Would you like to become part of our network?
Then send an email to [email protected] and tell us who you are, what you do and why you think BENGglas is a good fit for your business. We will then contact you soon to discuss the possibilities.
Good to know:
As a dealer you get access to our sample windows, plenty of marketing support, technical support and you will be included in our online dealer map so customers know how to find you easily.
We look forward to hearing from you!
BENGglas Extra Clear
BENGglas Extra Clear is the clearest vacuum glazing in the product line. It’s almost as clear as single-pane glass, but with an insulation value of U=0.50. Perfect for those who want to maximize savings while enjoying extra natural light and free solar heat.
- Top-Notch Insulation (U=0.50)
- Fits into existing window frames
- Extra-clear vacuum glazing
- Extra light and solar heat (LTA=83, G=0.68)
- U-value tested by IFT Rosenheim (2025)
BENGglas Single Coated
BENGglas Single Coated combines the color-neutral appearance of double glazing with an insulation value of up to 0.40 (U). With a glass thickness of just 6.7 mm, the U-value is 0.50. Perfect for slim window frames and historic buildings.
- Maximum insulation (U=0.40–0.50)
- Fits into existing window frames
- Ultra-slim: starting at 6.7 mm (U=0.50)
- Color-neutral vacuum glazing
- Natural light transmission (LTA=78%)
- U-value tested by IFT Rosenheim (2025)
BENGglas Double Coated
With a high insulation value of 0.40 (U),BENGglas Double Coated keeps the heat inside. At the same time, a smart sun-control coating keeps the sun’s heat out. This way, you can always enjoy a cool and comfortable home—and keep your energy bills low, even on the hottest and coldest days.
- Solar control glass (G=0.39)
- Maximum insulation (U=0.40)
- Fits into existing window frames
- U-value tested by IFT Rosenheim (2025)
BENGglas Triple Coated
BENGglas Triple Coated offers maximum sun protection and the world’s best insulation value: U=0.35! For those seeking maximum energy efficiency and sun protection in commercial construction.
- The best insulation value worldwide (U=0.35)
- Highly solar control glass (G=0.33)
- Fits into existing window frames
- U-value tested by IFT Rosenheim (2025)
BENGglas Hybrid
BENGglas Hybrid insulates twice as well as triple-pane glass and is thinner than standard double-pane glass. Or rather, you decide on the glass configuration and thickness yourself. You keep your existing window frames and benefit from additional edge insulation: more heat, less heat loss, and no need for heavy, expensive triple-pane glass. Choose the thickness and type of BENGglas yourself, with the best insulation value available worldwide: starting at U=0.35.
- Maximum insulation (U=0.35–0.50)
- Fits into existing window frames with wider profiles
- Improves edge insulation
- Fully customizable to your specifications
- Includes thermally broken warm-edge spacers
BENGglas Monu
BENGglas Monu combines extra-clear glass with the insulating power of vacuum glazing (U=0.50). Thanks to its slim profile of just 8.3 mm and its subtly undulating surface, it is the ideal solution for historic buildings where the original window frames must be preserved.
- Top-tier insulation (U=0.50)
- Extra-clear vacuum glazing
- Extra light and solar heat (LTA=83, G=0.68)
- Fits into existing window frames
- The best choice for historic renovations
- U-value tested by IFT Rosenheim (2025)
BENGglas Monu Restover
BENGglas Monu Restover combines heritage glass (Restover) with the insulating properties of vacuum glazing (U=0.50). The distinctive strong curvature of heritage glass preserves the authentic appearance so characteristic of historic buildings. For the first time, there is a glass solution that helps preserve heritage.
- Top-tier insulation (U=0.50)
- Extra-clear vacuum glazing
- For extra daylight and solar heat (LTA=83%, G=0.68)
- Laminated glass: 12 mm
- Heritage glass: strongly curved surface (Restover glass)
- U-value tested by IFT Rosenheim (2025)
BENGglas Sun
With BENGglas SUN, you not only save on your energy costs thanks to its extremely low U-value of 0.50—you also generate your own energy! Thanks to its integrated solar cells, this glass is ideal for facades and roof glazing in sunny locations.
- Top insulation (U=0.50)
- Energy generation (up to 140 Wp/m²)
- No degradation of the U-value when installed horizontally
- Lightweight and slim (> 14 mm)
- U-value tested by IFT Rosenheim (2025)
- Project-based construction: available for order starting at 50 m²
BENGglas Solar Control
BENGglas Solar Control offers the best solar control in the BENGglas product line—with an impressively low G-value of 0.29. Ideal for commercial buildings where you want to keep solar heat out and achieve maximum energy efficiency.
- Top-tier insulation (U=0.50)
- Maximum solar control (G=0.29)
- Fits into existing window frames
- U-value tested by TÜV Rheinland (2025)
BENGglas PyroVac® EW 30-1
BENGglas PyroVac® EW30-1 is fire-resistant vacuum glazing with a U-value of 0.40 and a total glass thickness of just 15 mm. Thanks to its EW30-1 classification, the glass provides 30 minutes of protection against fire and smoke, while significantly reducing heat radiation on the non-fire side.
- Maximum insulation (U=0.40)
- Double-sided shatter-resistant (EN 3569) and fall-through-resistant (EN 2608)
- Fire-resistant: EW30, fire-rated on one side, UV-stable, impact class: 1B1 (EN 12600)
- Glass thickness: 15 mm
- Tested and certified
- Fully customizable