To1978
Basics:
Energetic standard of installed windows compared to German situation between 1969 and 1978:
Record ID: 5
End of time frame: 1978
U-Value:
Wooden window frames, single glazed: 5.0 W/(m2*K)
Wooden window frames, double glazed: 2.7 W/(m2*K)
Plastic frames: 3.0 W/(m2*K)
Aluminium/steel frames: 4.3 W/(m2*K)
g-Value:
Wooden window frames, single glazed: 0.87
Wooden window frames, double glazed: 0.75
Plastic frames: 0.75
Aluminium/steel frames: 0.75
26 September 2025