The Double Function of Passive House Windows

17th January 2020

The window in a passive house plays an excellent role in two ways. Firstly, the heat loss can be reduced despite large glass areas. Secondly, windows open up possibilities for heat gain through solar irradiation. Highly thermally insulating Internorm windows fulfil this double role exemplary which first appears contradictory. Ug values as low as 0.4 W/(m2K) can be achieved with thermal insulation glazing which is used in passive houses. Find out more in the Internorm Windows section of the website.

The Double Function of Passive House Windows

Advantages of passive house windows - Windows in passive houses are tripled glazed and frames are also very well insulated in order to fulfil the high requirements on thermal insulation. As 30 to 40% of the window opening consists of the frame, the quality of the frame is paramount. In detail, passive house windows offer you the following advantages:

  • Highly thermally insulating glazing
  • Highly thermally insulating frame
  • Thermally optimised edge compound
  • Professional, thermally optimised installation

Enquiry Form


Our Showroom is open by appointment only, so we can give you an individually tailored viewing experience. Call 01226 702567 to arrange a time to suit you, even if this is outside normal office hours or at a weekend.