Vacuum glass is a revolutionary step in the field of (glass) insulation. BENGglas is a type of vacuum glass and has additional advantages over regular vacuum glass.


Vacuum glass is extremely thin insulating glass in which two panes of glass are separated by a high vacuum space. This vacuum prevents heat and sound transmission and ensures an extremely high insulation value and good sound absorption. The microscopic spacers are inherent to vacuum glass and prevent the two panes of glass from touching. BENGglas has several advantages compared to regular vacuum glass:


  • BENGglas is almost always tempered (tempered glass is 5x stronger and has no thermal breakage)
  • BENGglas has a U-value from 0.40, regular vacuum glass has a U-value of 0.70
  • BENGglas has up to 6x fewer spacers
  • BENGglas is considerably cheaper than regular vacuum glass

BENGglas comparison

Only glass
You value
Thickness (from)
30 dB
36 dB

BENGglas – external characteristics

The BENGglas portfolio consists of four types of vacuum glass:

  • BENGglas BASIC
  • BENGglas
  • BENGglas PRO
  • BENGglas +

Each type has specific technical properties and external characteristics. As a result, almost every project can be provided with a suitable vacuum glass solution.


BENGglas BASIC is the entry-level model of the BENGglas product range. This type does not have a vacuum cap and has a thin absorption strip.

The U-value of BENGglas BASIC is 0.58 and therefore insulates better than regular vacuum glass

  • U value 0.58
  • Fully hardened (from 10.15 mm thickness)
  • 4x less spacers than regular vacuum glass
  • Economically the most advantageous option


The “ BENGglas ” type is equipped with a visible vacuum valve in the corner. There is also a small circle for absorption. The sealing edge (10 mm) can therefore be kept very slim and therefore disappears behind the glazing bars.

  • U value 0.40
  • Fully hardened
  • 6x less spacers than regular vacuum glass
  • The best U value in the world!

BENGglas Pro

The big advantage of BENGglas PRO is that this product is equipped with an invisible vacuum valve. Because the valve is concealed, the sealing edge (18 mm) is slightly wider than with the other types BENGglas . Nevertheless, this edge often disappears completely behind the glazing bars. Absorption takes place by means of a small strip along the sealing edge.

  • U value 0.45
  • Fully hardened
  • 5x less spacers than regular vacuum glass
  • Suitable for large window dimensions: 1,800 x 3,000 mm

BENGglas +

BENGglas + is the ideal product for repetitive dimensions. It has no vacuum cap, a slim sealing rim, a low U-value and is also very competitively priced.

  • U value 0.45
  • Fully hardened
  • 6x less spacers than regular vacuum glass
  • Optically the most attractive variant

Only available from 100 m² per project.

The four types of BENGglas vacuum glass each have their own technical properties. These are set out in the table below.