Off-the-shelf Envelope

Like many of the examples shown here, the modernisation of a residential building in Cologne’s Zollstock district by Zeller Kölmel Architekten is one of a series of serial renovation pilot projects initiated by the German dena | Jens Willebrand Energy Agency (dena).
Industrially prefabricated elements are intended to optimize the energy efficiency of existing buildings more quickly. Which companies are currently active in the serial renovation of building envelopes? 
Like many of the examples shown here, the modernisation of a residential building in Cologne’s Zollstock district by Zeller Kölmel Architekten is one of a series of serial renovation pilot projects initiated by the German dena | Jens Willebrand Energy Agency (dena).