As we tend to keep windows and doors closed to hide away from the cold without proper ventilation quality windows and exhaust systems, moisture and humidity accommodates for mould growth.

ABCB climate zone map indicates coastal area of Queensland is mainly zone 1 and 2 which is hot humid summer, warm winter and warm humid summer, mild winter subsequently. Inland is Zone 3 with hot dry summer, warm winter.

Mould growth includes gemmation, growth and sporulation. It thrives it high humidity areas. Climate change projections provided by the CSIRO indicate shown in a previous post indicates warming oceans and intensified water cycles. This leads to greater humidity which is most ideal for mould growth. With climatic zones in QLD already experiencing humid summers and warm-mild winters, we can expect increased mould growth. This is likely to have health implications and has been found to increase the risk of developing asthma, irritate rhinitis, eczema and coughing of phlegm. This is not only the case for Queensland, but all other coastal areas as well, including Victoria and New South Wales. Especially during winter months in the South Eastern coastline, poor ventilation, windows and exhaust system along with closed windows and doors, accommodate for mould growth. Mould also produces various enzymes that can digest the toughest materials, causing damage to things such as drywall, ceiling tiles, carpets and materials made from organic matter. The passive house standard is known to have exceptional performance regarding airtightness, ventilation and insulation which can prevent mould growth. As passive certified builders with extensive experience and knowledge derived from Europe, we can help you build a comfortable and energy efficient home.

Source: ABC, Barbeau et al., 2010, Cox-ganser, 2015, Moreno-Rangel et al., 2020, Su, 2006