The heat insulation requirements on buildings will only continue to be tightened. For exterior walls with heat insulation, this is basically not a problem. But for windows and facades it is conceivable that in a few years the requirements will only be met with triple-glazing or with vacuum-glazing which may be available by then. A research project will now develop particularly low thermal bridging constructions for the integration of extremely good thermal insulating and vacuum glazing for thin framework and facade structures.
more details Thinner heat insulation with new window and facade constructions