Hygrothermal Conditions and Mould Growth Potential in Cold Attics: Impact of Weather, Building System and Construction Design Characteristics

Field surveys and experiences of cold attics show that these are risk constructions. Both old and new constructions are facing problems. For old constructions there is a clear correlation with improved attic floor insulations. In this chapter the hygrothermal condition of the attic is simulated both using simplified as well as more advanced models. These models are also used to generate probabilistic assessment of mould growth risk. Validation of the advanced HAM-model using field measurements is also demonstrated.