The Soeverein
April 6, 2020
Apartments Spetsaï nv
April 6, 2020

Chamber of Commerce

The Chamber of Commerce in Luxemburg is not just a building. It is in fact composed of six different buildings with three different roof types in total. A challenge not to underestimate. Read in this case study how the architectural firm Jean Petit managed everything.

In the centre of Kirchberg, the European district of the city of Luxemburg, we find a fine piece of architecture. The Chamber of Commerce in Luxemburg is not just a building. It is in fact composed of six different buildings: the original construction an five new ones. The whole with three different roof types in total. A challenge not to underestimate. The international experience and the knowhow of the technical team was vital here.

To steer this enormous project in the right direction, help was called in from the architectural firm of Parisian Claude Vasconi. The office “Jean Petit”, the Luxemburg partner of Vasconi followed up the entire project. The result is what we can call one of the most advanced buildings of the grand duchy.

Chamber of Commerce 2
Chamber of Commerce 3

The decision to work with Derbigum is based on a durability study of waterproofing membranes done by the WTCB.

All the standards, calculated according the French regulations, were adapted to the situation in Luxemburg.

The jobsite consists of three roof types : traditional roofs, ballasted roofs (3,000 m² of plates on Buzon pedestals) and green roofs.

In order to be able to follow up the project and all its typically technical characteristics from the beginning, the Derbigum team visited the jobsite regularly. During the works numerous waterproofing tests were executed. At the technical check up e.g. all the roofs had to be inundated, a rather unusual thing to do with this kind of job. What’s more, the maintenance service of the Chamber of Commerce requested a manual on how to maintain the waterproofing in the future.

The roofers got an adapted training and during the whole duration of the jobsite Derbigum provided assistance to the contractor. This technical follow-up before and after the works played an important role because a successful application is only possible when the roofer applies the product correctly.

10 000 m2
Luxemburg, Luxemburg
2001-2005
Green roof, Traditional flat roof,