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Doktornberg in Hamburg/Germany: Cavity insulation with Neopor®

The Doktornberg villa in Hamburg, Germany, demonstrates that cavity insulation is an ideal solution to retain the appearance of beautiful old facades. The energetic modernisation using prefoamed Neopor® and the elimination of damaged joints drastically reduce heat loss.

  • Villa built in 1928 (stories with a basement and unfinished hipped roof)
  • U value of uninsulated facade: 1.64 W/m2*K
  • Facade surface of 256 m2 exhibited high energy losses
  • Injection nozzle blows prefoamed Neopor® and water-based adhesive into the wall cavity 
  • Avoiding changes in the building’s external appearance
  • Reparation of damaged joints
  • U value of the insulated façade: 0.38 W/m2*K (heat loss through the facade has been reduced by 77 %)

Downloas as PDF

"Cavity insulation was the ideal solution, as all of the requirements were met by one single product."






Georg Seimel,
proprietor of EuGon Consulting GmbH,
Energy Consultancy

Cavity insulation / loose beads with Neopor®

Two-leaf masonry structures represent a rainproof wall structure even when subjected to heavy loading from driving rain. Insulating materials made of Neopor® can be employed for frost-resistant, back-ventilated masonry as well as purely for cavity insulation that is not backventilated.