Insulating Glass

If you currently have a home with only single glazing, then installing double glazing or HR glazing can have many advantages for you. People often immediately opt for HR++ or even triple glazing. HR glass can also be a good choice in itself. It is often difficult to make a choice, because, for example, HR++ glass is unnecessary in a shed, but single glass is just too cold for a shed. By installing HR insulating glass, your energy label will immediately improve and you can save a lot on your energy bill!

The insulation value of glass is expressed in a U-value: the lower the U-value, the better the glass insulates. Triple glass has the lowest U-value (0.5 – 0.9).

Type of glass (U-value)

Annual savings per m2

glass/year 

Triple glazing in new frame (0.5 – 0.9) 30m3                             

Triple glazing in existing frame (0.5 – 0.9) 25m3                              

HR++ glass (1.0 – 1.2) 23m3                               

HR+ (1.3 – 1.6) 21m3                                              

HR (1.7 – 2.0) 16m3                                 

Double glazing, Thermopane (2.7) 13m3                                    

Single glazing (5.8) –