[Measuring fungal spores in residential housing].

The frequently expressed suspicion that certain chemicals are responsible for the infestation of living rooms and for health disorders cannot be substantiated on close examination in some cases. Instead, wet parts of buildings are found to be infested by mould which might be the reason for health disorders. We introduce a special method of measuring mould infestation. Some case studies prove the suspicion that moisture in living accommodation must be taken notice of more properly. Redevelopment principles are outlined.