Tschuggen Bergoase, Arosa

Pitched green roof with lawn and sail-shaped skylights
project profile data
Area: ca. 2,500
Construction year: 2006
Architect/Design: ARGE Studio Mario Botta, Lugano and Fanzun AG, Chur
System build-up: Inverted Roof with Floradrain® FD 25-RV, grass and herbs
Project report

The new wellness and spa area of the Tschuggen Bergoase in Arosa was de-signed by the architect Mario Botta. The greater part of this new building disappears somewhat into the mountain. The only visible elements are the skylights, which are up to 13 meters in height and are intended to resemble trees. The green roof build-up is an inverted roof with the thermal insulation placed above the roof waterproofing. A Floradrain® FD 25-RV drainage element is installed on a water-resistant filter sheet. A wooden construction resembling an “avalanche support” was built as shear resistance for the steep roof areas. The humus layer that had been removed and stored temporarily was used as a vegetation layer and a lawn was sown.

  • Roof terrace and pitched green roof with sail-shaped skylights
    The grassy roof blends perfectly into the surrounding landscape.
  • Pitched green roof with lawn and sail-shaped skylights
    Most of the structure of the building is built into the hillside.
  • Sail-shaped skylights on a green roof in front of mountains
    The design simulates its mountainous surroundings.
  • Pitched green roof with lawn and light sails
    The skylights are up to 13 meters in height and are intended to resemble trees.
  • Hill with meadow and skylights
    The humus layer that had been removed was used as a vegetation layer for grass and herbs.