New construction MFH Poststrasse, Zürich

The project
The apartment building on Poststrasse (7 residential units on 3 floors) was the first Minergie-P-Eco building in the municipality of Spreitenbach. The new building thus not only impressed with its architecture, but also set new standards in terms of energy efficiency.

The construction method
Except for the basement and the access core with staircase and storage tank, the apartment house was built in wood. Worth mentioning are the interior walls with storage mass for direct solar gains. Since a high degree of prefabrication was desired, prefabricated wood-concrete composite interior walls were installed.

The challenge
Here, for the first time, we used interior cladding made of PCM (phase change material). These consist of fine encapsulated kerosene beads, which melt when heated and become solid when cooled. This change of aggregate state from solid to liquid and back again allows energy to be bound and released. This keeps the surface temperature at the same level for a long time. This level can be adjusted during the production of the sheets and lies between around 23 and 26° C.