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Microbial growth in insulation of external walls: modeling the indoor air biocontamination sources

Pessi, A., Suonketo, J., Pentti, M., Kurkilahti, M., Rantio-lehtim?ki, A.
2000
Proceedings of Healthy Buildings 2000, Vol. 3 295
air quality, actinomycetes, modeling, insulation, humidity , bacteria, microbial growth, wall, convection

Pessi, A., Suonketo, J., Pentti, M., Kurkilahti, M., Rantio-lehtim?ki, A., (2000), "Microbial growth in insulation of external walls: modeling the indoor air biocontamination sources", Proceedings of Healthy Buildings 2000, Vol. 3 295.
Abstract:

We studied microbial growth inside exterior walls as a possible biocontamination source for indoor air. Microbial contamination (mesophilic fungi, actinobacteria and other bacteria) of the insulation layer was measured in cfu/g of mineral wool. Quality of indoor air was studied from flats next to analysed panels having different degree of microbial contamination in the insulation. Generalised Linear Mixed Models were used to analyse indoor air spora using microbial contamination of insulation, other microbial sources (e.g. outdoor air), and environmental variables as explaining factors. Actinobacterial contamination in the insulation layer was shown to affect indoor air quality. An analogous linkage with other bacteria or fungi was not found. The moisture content of indoor air (g/m3) affected significantly airborne counts of all three microbial gro ups.
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Author Information and Other Publications Notes
Pessi, A.
  1. Microbial growth inside insulated external walls as an indoor air biocontamination source
  2. The air flows and microbial contamination to indoor air from sandwich facade -- case study  
Suonketo, J.
  1. An approach to management of critical indoor air problems in school buildings
  2. Microbial growth inside insulated external walls as an indoor air biocontamination source
  3. The air flows and microbial contamination to indoor air from sandwich facade -- case study  
Pentti, M.
  1. An approach to management of critical indoor air problems in school buildings
  2. Microbial growth inside insulated external walls as an indoor air biocontamination source  
Kurkilahti, M.
  1. Microbial growth inside insulated external walls as an indoor air biocontamination source  
Rantio-lehtim?ki, A.
     


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