You are using an outdated browser.
Please upgrade your browser to improve your experience.

Loci Anima
  Loci Anima Projects Studio News Contact Press Fr En
Projects Studio News Contact Press Fr En

Renovation of the Zehrfuss Tower Block, Saint-Denis

A buil­ding that covers up when it gets cold and takes off a layer when it gets hot, this is the prin­ciple under­lying the reno­va­tion of the tower block built in 1970 by Bernard Zehrfuss in Saint-Denis. In 2009, it won the Low Carbon Renovation com­pe­ti­tion orga­ni­zed by EDF.

Program Renovation of a building constructed by Bernard Zehrfuss
Site Saint-Denis ,France
Floor Area 5 170sqm / 55 650sqft
Cost of construction € 8 800 000 / $ 9 900 000
Timetable 2009 (not completed)
Project owners Siemens, EDF
Certification HQE, BBC, Low Carbone

Built in 1970 by the archi­tect Bernard Zehrfuss, the epo­ny­mous tower block is ele­gant and inno­va­tive, but noto­riously poorly insu­la­ted. The pro­ject aimed to remedy this draw­back while conser­ving the ori­gi­na­lity of the façade. With win­dows that can now be ope­ned, the buil­ding breathes in sum­mer without the use of air-condi­tio­ning. Thanks to its struc­tu­ral concrete shaft and to the ther­mal points on the façade, the heat is cha­sed out­side the buil­ding. In win­ter, infla­table blinds made from EFTE, a highly insu­la­ting mate­rial that is trans­pa­rent, are lowe­red along cables and cover the exte­rior façade, pro­vi­ding a warm over­coat for the buil­ding.

Renovation of the Zehrfuss Tower Block, Saint-Denis — © Loci Anima
Renovation of the Zehrfuss Tower Block, Saint-Denis — © Loci Anima
Renovation of the Zehrfuss Tower Block, Saint-Denis — © Loci Anima
Renovation of the Zehrfuss Tower Block, Saint-Denis — © Loci Anima