Konflikten mellan bevarandekrav och tilläggsisolering : The conflict between conservation requirements and additional insulation

Sammanfattning: Sweden has formulated ambitious energy goals which signify that by year 2050 the energy usage should be halved. One of the objectives is the reduction of energy usage by 20% by year 2020 and that it should be compared to the usage of energy from 1995. In parallel with increased energy requirements for buildings the demand on housing conservation, by highlighting also buildings from the last 50 years as part of the building heritage, continues to enhance, which in theory means that there is a conflict between these. The law will never be able to point out unique buildings and PBL (planning and building act) is not especially concrete. The National Housing Board has tried to make this more concrete by the new BBR regulations though there are still an enormous variety of interpretations. This report deals with the conflict between conservation requirements and additional insulation of the building envelope and is limited to multi-residential buildings built between the years 1945 and 1975. It is the stock with the greatest energy consumption and that is where the big challenge lies. The question is whether in practice it is no conflict between conservation requirements and additional insulation of the building envelope and what it in this case depends. With the support of background facts, interview questions were formulated for different participants. By interviews with property-owners, municipalities and other partners it has been shown that the creation of zoning determines whether a property has been preserved. In municipalities with a metropolitan character the interest in conservation issues are the greatest and Stockholm municipality distinguishes itself, providing significant space in regards to this subject. The smaller municipalities do not believe in that the preservation of our multi-residential buildings are central but that there lies a greater problem in areal density and that eventually great portions of the genuine country will disappear. Only in isolated cases, conservation requirements became an obstacle in performing façade renovations. Property owners are interested in the conservation issue; however, it must be weighed against the economic condition and therefore is it in sight of what is a good conservation.