The Best Insulating Glass in the World U=0.35

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 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)

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 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 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 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 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)

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 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® 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