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Things to know about new-build

Windows determine the character of a house and build a connection to the outside world. Windows are a natural source of light that create a comfortable atmosphere and support the well-being.

Energy efficient construction

Not only passive houses help to save energy – also in the conventionally house building you can save enormous energy and CO2. A prerequisite for this is a corresponding know-how. Your Internorm distribution partner will gladly advice you.

Alignment of windows and doors

To make best use of the sun, windows should wherever possible face south, west or east.Large, south-facingareas of glass create a good energy balance and bring light and life into the room.

To prevent overheating in the room, provision for sun protection should be included in the planning stages. An integrated insect proofing system is also available.

Always ensure that outside doors have built-in weather protection. On south-facing front doors with dark surfaces the surface temperature can become very high if there is no integral protection, and this can lead to functional problems. Care should be taken that west-facing doors are adequately protected from very heavy rain.

Apertures in the house shell and determining size



Entrance doors


Tips for building windows

Our checklist helps you to find your way round the basic questions and considerations you might have when buying windows. You can, of course, obtain first-class, all-round advice from our specialist dealers.


Things you need to know about renovation

High energy prices, climate protection and the introduction of energy performance certificates all lead to the fact that an investment in sustainable remodelling of your house will pay off quickly. Old “energy dumps” can be easily replaced with modern, highly thermally insulated Internorm window systems, which will save heating costs.

Lower energy consumption from the start

As has been demonstrated in various studies, a temperature rise of two degrees centigrade can be accommodated without any major economic impact, anything above that is critical. The situation is serious, but not hopeless. Everyone agrees that the major contributor for climate change is the worldwide emission of CO2.

Possible overall temperature losses in a badly insulated house

Saving tonnes of CO2 is possible

This notion becomes even more interesting, if you note where these CO2 emissions originate from: the well-known “sinners” industry and traffic each

account for approximately a third, but roughly 40 % come from badly insulated buildings.

As 25 to 30 % of the heat in a house escapes through the windows alone; this results in an increased need for heating and cooling. Using modern windows could already save tonnes of CO2 every year. If all windows in an average house with 20 windows aged 25 years would be replaced with new passive house windows, every year almost two tonnes of CO2 could be saved. In case these old windows are old single glazed windows, which are even less insulated, the number would rise to almost five tonnes.

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