Welcome to our survey on hygrothermal-related structural damage. Taking part will take up about 5-10 minutes of your time. The Institute of Building Climatology at the TU Dresden and the Fraunhofer Institute for Building Physics are conducting this survey as part of a research project funded by the BMWI (the german Federal Ministry for Economic Affairs and Energy). The subject is hygrothermal damage to structures, particularly their prediction using hygrothermal simulation. The target group of the survey are stakeholders of the building industry from architects to planners, calculators, material suppliers or contractors to users or building management.