Home    Service    Become a partner    Jobs
deutsch      englisch

freecall


How to maintain the window right?

read now

What is VOB?

read now



What does U-value mean?

Did you know that the K-value is still used extensively, but is an outdated term? The European standard is now the U-value. The U-value is calculated differently. For the window you have to differentiate between three different U-values: The U-value for the window as a whole (window frames and glass), the U-value for the glazing and the U-value for the window frames (no glass). Again, the smaller the value, the better the insulation. 





For our PVC Windows and Doors we only use Materials "Made in Germany".


We`re processing for our PVC Windows exclusively Quality Profiles from Schüco.


Our website is CO₂-neutral.
Thereby we reduce the CO₂-emission.









© 2017 ISOGON Fenstersysteme GmbH. All rights reserved.