Maximum insulation with extra solar heat and natural light
Are you looking for glass that allows a lot of daylight in, without adding color to your beautiful view? BENGglas is also available in extra clear variants – perfect for those who want to make the most of natural light and solar heat.
Each type of BENGglas lets in up to 15% more natural daylight than triple glazing, while insulating up to three times better than double glazing
With a G-value of up to 0.68, you also bring in extra solar heat — useful in winter and good for your energy bill.
- Extra clear or color-neutral vacuum glass
- For extra daylight and solar heat (LTA up to 83%)
- Maximum insulation (up to U=0.50)
- The best choice for monumental renovations
- Always fits in existing frames
- U-value tested by IFT Rosenheim (2025)
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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!
Solar heat gain factor
The G-value (solar heat gain factor) indicates how much solar heat passes through the glass — in other words, how much free warmth from the sun you actually feel indoors.
Good to know: no matter which G-value you choose, BENGglas always delivers excellent insulation — far better than double or triple glazing. You’ll notice the difference: your home loses less heat, maintains its temperature longer, and requires less heating. Especially in winter or in older homes, this can mean significant savings on your energy bill.
What does change? How much solar heat you allow inside.
- Higher G-value → More solar heat indoors. Perfect for bright spaces or colder facades.
- Lower G-value → More solar heat blocked. Ideal for areas with large glass surfaces, warm rooms, or strong summer sun.
You choose what suits you
BENGglas is available in various versions, each offering its own balance between natural light, heat, and solar protection.
Want extra daylight? Prefer to block more sun? Or a mix of both? You decide what’s important — and whichever option you choose:
- It fits perfectly into your existing frames.
- It’s sleek, lightweight, and highly insulating.
- It contributes to a more comfortable indoor climate.
Not sure which version is best for your situation? We’re happy to advise you.
Light transmission factor
The LTA value (light transmission factor) indicates how much natural daylight passes through the glass. The higher the value, the more light enters your home — and you’ll notice it immediately. Daylight not only makes your living space more pleasant, but it can also help reduce energy use. The more natural light that comes in, the less often you need artificial lighting.
More light — or just a little less? You decide.
Not every space needs the same amount of daylight. In homes or buildings with large glass surfaces or strong direct sunlight, a lower LTA value can be more comfortable — helping to prevent glare, overheating, or fading of furniture and floors.
That’s why BENGglas offers different glass types — from ultra-clear to more solar-control — with both high and lower LTA values, depending on the function of the room and the orientation of your facades. Whatever you choose, you’ll always enjoy superior insulation, with U-values as low as 0.35.
Want to know which option best suits your plans? We’re happy to help you decide.
Solar heat that is welcome
Extra clear glass with a high G-value (up to 0.68) lets more solar heat in — meaning less heating in winter and a lower energy bill. Especially for south- or east-facing facades, this can be a smart choice. Where solar control glass keeps heat out, extra clear glass does the opposite — making it ideal for spaces where warmth is welcome, such as living rooms, conservatories, or heritage facades.
Thanks to advanced vacuum technology, the insulation value remains unmatched, so heat stays inside and energy loss is minimized. A true win-win: more sunshine indoors, less heat escaping outdoors.
Frequently asked questions
What are the benefits of vacuum glass?
Vacuum glass is no ordinary insulating glass - it is a smart and future-proof solution for sustainable construction. Compared to standard insulation glass, BENG glass offers benefits that directly improve your home as well as help the climate.
- Superior insulation
With a U-value starting at 0.35 W/m²K, BENG glass is two times better than triple glazing (0.70) and three times better than HR++ glass (1.10). This ensures less heat loss, lower heating costs and a comfortable home. - No loss of insulation in slope
Many insulation glasses lose up to 60% of their performance when installed at an angle. BENG glass continues to perform. - Up to twice the lifespan
Whereas traditional glass lasts an average of 25 years, BENG glass lasts up to 50 years. Producing it once means less CO₂ and half a century of benefit. - Strong noise reduction
From 36 dB to 42 dB, well above HR++ (31 dB) and triple glazing (33 dB). As a result, you live more quietly and peacefully. Ideal for homes or properties on busy roads. - More comfort all year round
Cool in summer, warm in winter - without draughts or cold spots. - No condensation on the inside
The unique edge seal completely prevents interior condensation. - Fits into existing window frames
With only 8.3 mm thickness, BENG glass almost always fits into existing window frames. This makes renovations easier and avoids unnecessary use of materials. - A true climate hero
If the entire Netherlands switches to BENG glass, we save up to 4.1 megatons of CO₂ annually - comparable to 170,000 car trips from Amsterdam to Paris.
The production of BENG glass itself will also save 24,000 tons of CO₂ per year, thanks to production using green energy, 30% less material usage than with triple glazing, up to twice the lifespan and high insulation. - A smart investment in the future
A U-value that insulates up to 2x better and that for as much as 50 years. Combine that with an improved energy label and a higher home value and you have your costs back immediately!
Why is vacuum glass a smart investment?
Because you don't just buy glass, but a future-proof solution that really saves money and energy. BENG glass has an insulation value from 0.35 W/m²K - that is 2x better than triple glass (0.70) and even 3x better than HR++ glass (1.1). Less heat loss immediately means lower heating costs. It also means a better energy label and thus a higher home value. The effective payback time is often 0 years.
But that's not all. BENG glass lasts up to 50 years, while standard glass needs to be replaced after 25 years on average. Invest once, and you're set for two generations. That means less maintenance, less replacement, and thus lower overall costs.
The environment also benefits: if the entire Netherlands switches to BENG glass, we save as much as 4.1 megatons of CO₂ annually - comparable to 170,000 car trips from Amsterdam to Paris. Less CO₂ emissions and a lower energy bill: that's what we call an investment that pays for itself.
In short: with BENG glass you invest in sustainability, comfort and financial savings. Smart, right?
How do I request a vacuum glass quote?
At BENGglas, we understand that you don't want to spend a long time getting an honest price comparison.
By filling out our quote form , you will immediately receive three quotes from three authorized dealers in your area. These quotes include both delivery and installation of the vacuum glass.
Would you still prefer to decide yourself from whom you get a quote? That's easy, too.
Useour Dealer Finder byentering your zip code. You will then immediately get an overview of BENG glass dealers in your area, including their contact details and their own page with a quotation form. If desired, additional work, such as painting, can also be included. In this way, our dealers always offer a complete total solution.
All BENG glass dealers have sample windows, so you can view the glass and make an informed choice. You are 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 BENGglas at info@bengproducts.nl.
How much subsidy will I get for BENG glass in the Netherlands?
Good news! Thanks to the Sustainable Energy and Energy Saving Investment Subsidy (ISDE), you get a nice compensation if you preserve your home with BENG glass:
- € 25 per m² if you only replace the glass with BENG glass (registration code: KA18780)
- € 111 per m² if you also replace your window frames (report code: other)
- € 46 per m² if you live in a national monument and replace the glass with BENG glass
And it gets even better: if you also take other insulation measures, such as roof or floor insulation, the amount is doubled!
Do you doubt whether your home is a national monument? Check it quickly on RVO.nl.
Are you an entrepreneur and do you want to make your business premises more sustainable?
Then the Energy Investment Allowance (EIA) is for you! This allows you to get up to € 300 per square meter in tax benefits. Note: the investment must be at least € 2,500. Do not forget to apply for the subsidy within three months after installation via the eLoket of RVO.nl.
How much subsidy will I get for BENG glass in Belgium?
Do you live in Flanders? Then there is good news! When renovating your home or building, you can take advantage of the renovation premium. Do you replace your old glass with BENG glass? Then you get as much as €16 per m² back!
Subsidy application? Super easy:
- Have BENG glass installed by an authorized dealer or contractor.
- Apply for the premium via the online counter at Vlaanderen.be.
- After installation, you get a certificate from the contractor, which you use with your application.
Saving money can be that simple!
References
Are you curious to see 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 a difference for a greener future.
Get inspired and discover what we can do for your project!
BENGglas in ‘The Art of Living’ with the sustainability of a 100-year-old building
BENGglas breathes new life into mill Woldzigt
Verduurzaming woonboerderij Spanbroek
