A high standard of insulation as an important component of the energy turnaround
Hardly any component in a building has made such rapid progress in the field of thermal insulation as the window. Within twenty years, the U-value has improved from 2.6 to less than 1.0. The industry has made many adjustments, optimizing each window element individually. Triple glazing is now standard for a highly insulated house. This is complemented by integrated insulating inserts made of extruded polystyrene (XPS) or cork in the window frame, inert gas fillings in the spaces between the panes and thermally optimized edge seals.