David & Alison Croughan
Sub Floor Ventilation
When installed correctly roof ventilation takes your roof back to the outside ambiant shade temperature. Yes that can still be hot during the day but 40 degrees is a lot lower than 65 degrees. Where the massive change occurs is in the early evening. When you have a sealed roof which the heat can not escape from that heat, it only very slowly releases over the night. During hot weather conditions this release of heat is very limited and is reheating before it gets the chance to cool. With a Ventilated roof you are back to the outside ambient shade temperature directly thus taking all that heat pressure off the home. These cost effective machines work for years once installed at no additional cost but save you incredible electricity amounts through lack of needing to use alternative cooling devises.
Many homes today are closed tight during the day, for security reasons. This restriction on air movement can cause stale air and odors to accumulate, trap heat, and increase the concentration of household pollutants. The result is a more unpleasant environment with increased levels of allergens and asthma triggers.
Constant movement of air within the home and exchange of air with the external environment will help to alleviate these problems. This can only be achieved by forceful removal of air with the facility for replacement air to enter the home.
This process of replacing hot, stale air with clean, fresh air makes your life more comfortable in three ways:
Extraction of super heated attic air enabling it to be replaced by fresh air through ceiling registers or eave vents. Roof space temperatures can be lowered, in turn reducing the amount of heat radiating into the home.
Ducted energy bills. Ducted air conditioning systems operate far more efficiently with roof space ventilation.
Up to 12 litres of moisture per day is drawn into roof spaces from shower and kitchen fans and can cause mould and mildew. Adequate roof space ventilation can help maintain a dry atmosphere.
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