The significance of quality labelling single-family houses for the residents experience of the indoor environment

The purpose of this licentiate thesis is to investigate the following hypothesis in a case study: "Occupants of buildings with a quality labeled indoor environment experience a better indoor environment than occupants of buildings with normal planning and construction." The aim of the case study is to compare the outcome of using a quality system for indoor environment with a normal quality system. P-marked houses fulfilled best the requirements that are formulated in this essay. The resident's perception of the indoor environment is measured in a questionnaire survey. The case study includes 610 single-family houses that were built between the years 1999 and 2000. The result is that residents in P-marked detached houses with a slab on the ground foundation, consisted of more than one storey, floor heating on the ground and radiator heating on the upper storey, experienced significantly fewer problems with cold floors and drafts.