What is hidden behind the term "warm edge"?

Traditionally, spacers made of aluminium or galvanised steel are used for insulating glass. However, these create thermal bridges due to their thermal conductivity. Spacers with low thermal conductivity (low Psi-value, heat-relevant values) such as those made of plastic or stainless steel are therefore used to reduce heat loss in the edge area. The UW value (heat transfer coefficient of the window, heat-relevant values) can thus be improved by approx. 0.1 W/m²K. In addition, condensation in the edge area is avoided.

In the case of multiple glazing, the warm edge is a spacer in the transition area from the glass to the frame (edge seal), which keeps the individual glass panes permanently at a distance and is made of a material with very low thermal conductivity. Originally, the spacer was made of aluminium, which, however, has a high thermal conductivity and thus causes heat loss in the edge area of the glazing. Increased requirements for energy efficiency have led to the development of spacers made of highly insulating plastic, which is characterised by very low thermal conductivity. The use of the new material resulted in an increase in temperature at the inner edge of the window, which led to the name “warm edge” being coined.

Welcome to ENERsign® Price Configurator with U-Value window Calculation:

You don’t want to go through the trouble of obtaining various offers, but would like to find out the recommended prices and U-values for our high-quality ENERsign®primus window? Then try our price configurator, here you can put together your desired windows as you wish and try out different sizes and designs.

All you need is the desired dimensions and window types and you can configure immediately. The window price and U-value window will be adjusted automatically, so that you always have an overview and can compare directly.

We are uncompromising in the product we offer:
ENERsign®primus elements with at least triple glazing with a U-value glass of 0.52 W/m²K and a g-value of 53%. Other designs and special glasses are available on request.

Welcome to the ENERsign® U-Value window configurator:

The U-value window is also called heat transfer coefficient and according to the standard DIN EN 10077 it indicates the amount of thermal energy lost through a window to the outside.

The U-value window is calculated using the formula W/(m²K), i.e. watts per square metre and Kelvin. This value refers to the entire window and defines the amount of energy per unit of time that flows through an area of one square meter when the air temperature on both sides differs by one Kelvin. The lower this value is, the less energy or heat the window emits.

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Gesamtpreis (inkl. 19% MwSt)
0€ - 0
Potentially avoided CO2 emissions over 30 years :
Potentially saved energy and CO2 costs over 30 years:
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0 (W/m2K)
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