Office Building to Get Hedge-Covered Facade

FRIDAY, MAY 31, 2019

Work recently topped out at Düsseldorf, Germany’s Kö-Bogen II office block, a structure that’s slated to be covered with five miles’ worth of hedges.

The five-story block was designed by Ingenhoven Archiects as part of a competition in 2014.


The two main facades of the trapeze-shaped building will be covered with the hedges. The rows will be installed on each floor of the building's slopped facades. The roof will also be covered with greenery.

Architects worked with engineering firm Werner Sobek for the feat and with firm Frener & Reifer for the insulation and sealing work on the facade.

"… the main building looks like a virtual 'vertical park' with eight kilometres of hornbeam hedges, the leaves of which take on different hues throughout the year," said Ingenhoven Architects.

The hedges have been growing at a nursery for about three years and will be delivered on site as fully formed later this year.

The studio says that the goal for the hedges is to help cool the building, reduce the inner-city heat-island effect and help clean the air.

Materials for the work include:

  • 8,187 square meters of aluminum and steel stick system glass facades, mainly on the south and east sides, and for the courtyards of the main building;
  • A 4.5-meter high-glass facade for a round glass pavilion; and
  • 2,410 meters of steel planters with integrated irrigation and drainage system—in some places the troughs project 2-3 meters beyond the edge of the roof.

The building is slated to open in spring 2020.


Tagged categories: Color + Design; Design; EMEA (Europe, Middle East and Africa); EU; Green building; Green design; Green roofs; Ongoing projects

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