[Moisture and mold on the inner walls of prefabricated building slabs--investigating a strange cause].
Reasons for indoor-moisture beyond the normal level can be caused by penetrating dampness, condensation-water, and apartment misuse. A fall in the air temperature below the dew point in connection with moulding inside buildings becomes evident mostly at places like badly insulated outer-walls or room-corners. In a number of houses built between 1980 and 1983 in the so called "Plattenbauweise" (prefabricated slabs), exclusively the inner-walls were covered in mould around cracks in the walls. Examinations showed connections between the apartment and the outer-corridor with a slight exchange of air through the cracks. Warm, wet air escaped from the apartment into the outer-corridor, and cold air entered the apartment from the outer-corridor. This temporary fall below the dewpoint caused by suitable variation of temperature probably resulted in the building materials and wallpapers becoming damp, as well as the growth of mould.
Kaufhold
T
T
Institut für Allgemeine, Krankenhaus- und Umwelthygiene der Friedrich-Schiller-Universität Jena.
Fiedler
K
K
Jung
G
G
Lindner
M
M
Gassel
R P
RP
D000391:Air Microbiology; D004463:Ecology; D005160:Facility Design and Construction; D005658:Fungi / Q000302:isolation & purification*; D005858:Germany; D006798:Housing / Q000592:standards*; D006801:Humans; D006813:Humidity