German Home-
page of Annex 36
Homepage of the International Energy Agency
Borgen Secondary School
Address Borgen ungdomsskole
1388 Borgen
Asker, Norway
Year of construction 1970
Year of renovation 2002 - 2003
Total floor area 6000 m²
Number of pupils 450 - 500
Number of classrooms  
Typical classroom home base
groups of 15 or 45 pupils

Borgen secondary school was built in 1970. The school needed renovation and upgrade to be suitable to new working methodes and tentants from the neighborhood. The old building will have comprehensive retrofit, and 2000 m new construction will be the starting point for establishing a community centre. Good indoor climate, low energy and environment-friendly solutions are key factors to the retrofit concept.

Retrofit features:
  • Enlarged windows with improved thermal insulation and solar shading.
  • New roof to allow daylight inside.
  • New ventilation system based on hybrid ventilation to obtain better indoor climate.
  • Total change in plan layout to meet new working methods.
  • Low energy concepts and environmentally friendly solutions, supported by the national programme    EcoBuild.

  •   total report as pdf-download in English  

    Fraunhofer Institute for Building Physics