Air Quality

Mould and mildew are a major problem in warm, humid climates such as the east coast of Australia where as many as 70% of all homes eventually suffer from mildew problems. Mildew increases the risk of occupant sickness and causes expensive and frequent repairs and redecorating. Mildew is a mould that grows under warm, humid conditions. Optimal growth conditions are from 77° to 86° F (25° to 30° C), and between 62% and 93% relative humidity.

Ambient air contains mould and mildew spores, as well as other air quality problems such as bacteria, pollen, dust, etc. In addition, air leakage through structures carries moisture vapor with it, which condenses on colder surfaces. This condensation causes wood decay and contributes to the creation of microenvironments suitable for the development of mold and mildew.

In older buildings, uncontrolled air leakage can be responsible for 50 to 60% of the heating and cooling energy consumption, and large capacity heating and air conditioning equipment is required. During times when even small temperature differences exist between inside and outside and/or no wind is blowing, leaky buildings still experience underventilated conditions.

To improve the air quality in and around your home, seek further information on this site about Dehumidifiers, Sub-floor ventilators and Roof ventilators.