Investigation of Physical Characteristics of Houses and Occupants' Behavioural Factors for Mould Infestation in Residential Buildings

Mould growth can deteriorate indoor air quality in buildings. To alleviate problems in the built environment, accurate understanding of the risk factors associated for mould infestation is required. This study aimed at identifying the key risk factors that could affect mould growth on interior surfaces in residential buildings in Korea. Both the physical characteristics of buildings and the behaviour of occupants were recognised as key concerns. A questionnaire survey had been conducted randomly on a national basis for this research. The questionnaire included building-related factors, and occupants' activities and behaviour. A total of 314 completed questionnaires were collected and processed for statistical analysis. The association of mould growth with locations and types (apartments, multiplex houses, and detached houses) of the residential buildings were tested. The relationships between mould growth and activity factors, for example, bathing, washing clothes, and opening windows were also considered. Apartments were shown to be more vulnerable to mould growth in comparison to other types of residential buildings. The results were compared with findings from other regions in the world to further understand the effects of these key factors.