Moisture and evaporation is a part of earth's cycle where the wind disperses it. As dwellings are built on the ground this locks in humidity and is entrapped in the sub-floor whereby moisture can go nowhere except into your home. Sub-terranean moisture from rain and stormwater run-off finds its way into the sub-floor area as higher evaporation rates and storms are more frequent during the summer periods.
The use of natural ventilation should facilitate aeration in the sub-floor, however wind through passive vents is not always forthcoming which is very inconsistent. When humidity in the sub-floor become elevated and mix with organic substances such as mycelium or fungus it creates a pungent odour which will penetrate into the habitable area, this allows for mould growth if left unchecked.
The use of natural ventilation should facilitate aeration in the sub-floor, however wind through passive vents is not always forthcoming which is very inconsistent. When humidity in the sub-floor become elevated and mix with organic substances such as mycelium or fungus it creates a pungent odour which will penetrate into the habitable area, this allows for mould growth if left unchecked.
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The Envirofan Difference
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In the 1970's a Telecom engineer created a fan-forced ventilation system for sub-floor areas that would replace passive vents whether brick size or terracotta size. As now clients can take control of their sub-floor ventilation needs and not be at the mercy of the wind or the lack of it to aerate their sub-floor areas.
Envirofan Online Shop
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Extract over 5,500 litres per minute of damp air from your sub-floor area while preventing termites and mould from spreading into your home. The Envirofan Quad-Fan is quiet at only 27 decibels@1m, has low voltage (or can be solar powered), and only costs $4-$6 per fan annually. Extract over 7,000 litres per minute of damp air from your sub-floor area while preventing termites and mould from spreading into your home.
Sub-Floor Ventilation
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The purpose of a sub-floor ventilation system for your home is to extract the damp humid air and to displace it with fresh air from and into the sub-floor area. The same principle also applies to heat. Powered roof ventilation systems extract the hot air while allowing cooler air to enter the roof space.
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