摘要:Environmental factors affecting winter-time fungal contamination on sash windows, inside lower beads and rails were examined. Mold counts were about 20 times higher on sash windows in houses more than two years old than in new houses. However, no effect on fungal contamination was recognized for topography around house, house type or floor number. Fungal contamination of sash windows was higher in bedrooms and north-facing rooms than in dining kitchens or south-facing rooms. Fungal contamination of sash windows was lower in houses occupied by two or fewer family members than in those occupied by more than two. On the other hand, there was no significant difference according to whether the heating system discharged moisture. Fungal contamination of sash windows seems therefore to be most affected by evaporation from human bodies during sleep and daily minimum temperature. Opening the window daily and mopping daily with a dry towel were found to be effective for reducing the fungal contamination of sash windows. Installing double glazing and plastic sashes on sash windows was also found to be effective.