Renovation of an Office Building with Prefabricated Wooden Element—Case Hedensbyn

  • Karin SandbergEmail author
  • Anders Gustafsson
  • Anna Pousette
  • Joakim Norén
  • Mohsen Soleimani-Mohseni
Conference paper
Part of the Springer Proceedings in Energy book series (SPE)


There is a major need of cost-effective renovation that leads to lower energy consumption and better environment. This article shows the results from a pilot case of a newly developed prefabricated building system. It is an industrially prefabricated insulated wooden element adapted to renovation and upgrading of building envelopes. The renovated building is a one-story office building located in Skellefteå in the north of Sweden. Energy performance, thermal bridges, risk of moisture problems, LCA, applicability of the renovation method and assembly time were evaluated during the planning and execution of the renovation. Results from this case show that the elements were very light and easy for one person to handle at the building site. There is a great potential to reduce assembly time with improved joints and element sizes adapted to the building as well as improved batch packaging from the factory. With 100 mm insulation, the renovation gives a certain energy savings, and LCA calculations show that the reduction of climate impact due to reduced heating energy used during a service life 50 years corresponds to the climate impact of the renovation measures. The risk of microbial growth can be regarded as small.


Façade renovation Building envelope Prefabricated wood element Energy efficiency Thermal bridge Insulation Climate impact Retrofitting 



This paper was written within the project, Nordic Built Concept for renovation and upgrading of residential buildings, supported by Nordic Built, Swedish Energy Agency, The Swedish Research Council Formas and industry partners from Sweden, Norway and Finland. The work with “Case Hedensbyn” was also supported by Nordic Renovation Center, a project financed by an EU Interreg program with participants from Sweden, Norway and Finland to exchange best praxis and information on renovation.


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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.RISE Research Institutes of SwedenSkellefteåSweden
  2. 2.RISE Research Institutes of SwedenStockholmSweden
  3. 3.Umeå UniversityUmeåSweden

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