Humidity Impact on Air Quality in Straw- and Reed-Bale Houses

The suitability of reed- and straw-bale houses for the temperate climate zone was assessed. The influence of indoor climate indicators (relative humidity, internal humidity load of the borders, CO2, temperature, mould index) and the microbial community was evaluated on air quality in the bedrooms. No similar studies on indoor air quality have been reported previously. The current study involved (1) indoor air quality indicators (relative humidity, CO2, and temperature) in air and at two different heights in the walls were measured; (2) air quality was tested in the bedrooms of the studied houses, and the microbial species in air and walls were determined; (3) the impact of microbial communities on the air quality in the bedrooms of straw- and reed-bale buildings was assessed. Internal moisture was higher in the reed-bale buildings. The indoor air of the straw-bale and reed-bale buildings included more colonies than the outside air, but this did not affect indoor air quality.