A lot of people believe by keeping the heat loss from the home that escapes to the roofspace in winter will maintain a warmer home – this is a common misconception held by many, including insulation companies. Once you have heat loss from the enclosed space (inside the home) to the roofspace the value of this entrapped heat to the inhabitants is lost and the heat trapped in the roofspace serves no purpose to the inhabitants quite the contrary – the trapped heat in the roofspace can become a major problem for the inhabitants of the home without effective roof ventilation, due to condensation and Sick Building Syndrome.
This trapped heat in the roofspace (or ceiling space if you prefer) rises to the underside of the roof covering (be it tiles, metal or sarking etc). The top side of the roof covering (outside) is either cold or freezing – at this point the trapped heat carrying moisture vapour turns to water – this phenomenon is called the Dew Point – it could be raining in your roof. There are a lot of scenarios that come into play with condensation problems in the roofspace – check out BLOGS on this site “Warning! Read Before You Design Your Next Housing Project” and “Very Happy Customer”.
So therefore you need an effective roofspace ventilation system to allow the ambient airflow to enter and leave the roofspace, to allow the stale moist air to exhaust and be replaced with constant fresh air – will this make your home colder, definitely not, what the ventilation does is keep the roofspace dry it does not make your home colder. Due to friction your home will more than likely be warmer – check out this site Case Studies & Reports “26% Energy Savings”.
Therefore you need an effective roofspace ventilation system to allow the ambient airflow to enter and leave the roofspace causing the stale moist heated air to evacuate the roofspace – having an effective roof ventilation system installed in your roof will remove all the inherent problems of roofspace condensation and Sick Building Syndrome.
SO FOR THE MOST EFFECTIVE ROOF VENTILATION SYSTEMS IN AUSTRALIA YOU CANNOT GO PAST THE UNIVERSAL TILE VENTILATOR FOR TILED ROOFS AND THE SMOOTHLINE VENTILATOR FOR CORRUGATED COLORBOND ROOFS.