Energideklarationer och kulturvärden

• Main Author: Leijonhufvud, Gustaf
• Format: Others
• Language: Swedish
• Published: Högskolan på Gotland, Institutionen för kultur, energi och miljö 2006
• Online Access: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-307560

The European Directive on the Energy Performance of Buildings 2002/91/EC will soon be implemented in Sweden. Legislation about energy certificates will probably take effect in Sweden during October 2006. In this thesis I try to investigate if and how cultural values in the building stock will be affected by the introduction of compulsory energy certificates for existing buildings. My aim is to find out how the procedures and methods involved in the process of acquiring the certificates can be adjusted in a way that will preserve the cultural values. The subject of energy saving and its impact on historic building is briefly presented in the first chapters. Relevant Swedish legislation is described. The new Swedish legislation about energy certificates is summarized, with focus on the parts that might be important considering historic buildings. Three case studies constitute the core of the investigation. Energy certificates are constructed for three different one-family houses. The method that is supposed to be used when constructing the energy certificates is not yet established in Sweden, but the basis is somewhat decided. The results from each energy certificate have then been discussed with preservation issues in mind. Especially the recommendations for cost-effective improvements of the energy performance that are presented in the certificates are discussed. Undoubtedly, there is a potential for energy saving in historic buildings. Most culturally valuable buildings were built with constructions which are inferior to modern when it comes to energy performance. In the case of one- and two-family houses measures that affect the building shell (i.e. retrofitting and exchange of windows) will be proven cost-effective and therefore suggested in the certificates. We know that these kinds of measures are prone to affect the cultural and aesthetic values of historic buildings. This is well known in Sweden since the 1970´s, when many careless energy saving measures were made in connection with the oil crisis. The main conclusion made is that the independent experts who are supposed to carry out the work to produce the energy certificates should have a basic understanding of the problems involved. This necessary qualification should be applied for all categories of buildings, not only monumental ones. In the case of monumental buildings, where the cultural values are more obvious, it is in fact easier to be aware of the risks involved.