Single-pane safety glass

Safety glazing with toughened safety glass (ESG)

The safety requirements for which safety glazing is designed determine which type of safety glass is used. Toughened safety glass (ESG) is suitable for protection against accidents caused by glass breakage and therefore provides passive safety. It is toughened and, when broken, shatters into small, relatively harmless fragments.

For active safety, meaning protection against forced entry or attack, as well as for structural safety applications such as walkable glazing, laminated safety glass (VSG) is used. VSG is described in more detail in the following section.

ESG consists of glass panes that have undergone a special heat treatment. The float glass panes are heated to approximately 600 degrees Celsius and then rapidly cooled under controlled conditions. As a result, the surface cools faster than the interior of the glass. This creates thermal prestressing, which makes the glass more resistant to impact and, at the same time, ensures that if it breaks, it shatters into small fragments with a relatively low risk of injury. For this reason, ESG is used for vehicle side windows, in sports halls and in similarly exposed public areas.

Safety glazing with ESG in the FENSTERNORM product rang

ESG6b-ESG6b

Double glazing with ESG safety glass

• Two toughened ESG panes with a glass thickness of 6 mm for both the outer and inner pane
• Insulating coating on both panes facing the cavity between the panes
• Argon gas filling in the cavity between the panes
• Ug value = 1.1 W/m²K according to DIN EN 673
• Sound insulation value = Rw 34 dB according to DIN EN 410
• Maximum size of one insulating glass unit = 7.2 m²

ESG6b-6-ESG6b

Triple glazing with ESG safety insulating glass

• Two toughened ESG panes with a glass thickness of 6 mm for the outer and inner ESG panes, and a 6 mm thick middle pane
• Insulating coating on the outer and inner panes facing the cavity between the panes
• Argon gas filling in the cavities between the panes
• Ug value = 0.5 W/m²K according to DIN EN 673
• Sound insulation value = Rw 36 dB according to DIN EN 410
• Maximum size of one insulating glass unit = 7.2 m²

*Other glazing options available on request.