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Building-related microbes before and after the repair of moisture damage

Kujanpää L., Reiman M., Kujanpää R., 2003
moisture | refurbishment | school
Bibliographic info: Healthy Buildings 2003 - Proceedings 7th International Conference (7th-11th December 2003) - National University of Singapore - Vol. 1., pp 590-594, 3 Tab., 12 Ref.
Languages: English

In two school buildings, concentrations of viable fungal spores in air, material and insurface samples were high indicating moisture and mould damages. Microbesincluded numerous moisture indicating species (e.g. Aspergillus versicolor,Trichoderma, Fusarium, Stachybotrys, Chaetomium, Streptomyces). After renovation,the school buildings were thoroughly cleaned. Surfaces still had abundant anddiversiform microflora. After repeated cleaning, abundance and diversity ofmicroflora diminished. According to this study, moisture damages have greatinfluence on the microbiology of the building increasing the concentrations anddiversity of microbes. The renovation of major damages causes declining of microbialcounts and species, but leaves the traces of indicator microbes to the building.Repeated cleaning normalizes the microbiology of the building. Normal use of thebuilding returns the diversity of microflora, but the concentrations remain low, whichis unlike the situation before the repair.

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