Problems with high humidity levels and mould growth in cold attics have been increasing over the last few years. A recent Swedish study showed that as least 60 % of the single-family houses in Västra Götaland (largely, the Gothenburg region) are showing significant mould growth and thereby risk developing serious moisture problems.
Mould odours in indoor air seem to be one of the most frequent side effects (?Så mår våra hus?, the National Housing Board - Boverket 2009), Thus, cold attics are together with crawl spaces singled out as the two worst constructions in existing buildings with large existing and future mould problems.
The project aims at developing and providing decision support data and tools for the design of cold attics. The tools will be based on probalistic methodologies for prediction of energy use, life cycle cost and functional performences.The project will answer questions about the appropriate technological solution based on climatic conditionsm constructions techniques, ventilation systems and activities within the building, The project will provide answers to how secure the various technical solutions are.
The project is carried out by the Division of Building Technology, reasearch group Building Physics.
Angela Sasic Kalagasidis