Water is the biggest enemy of the roof because it causes a variety of damages that can affect the life of the roof if not repaired on time. However, since the roof must withstand all other types of weather conditions from the blasting sun to storm and snow, it will not be right to focus all attention on water damages to roofs. Excessive heat and extremely dry climates like what you find in Australia can be as much damaging for roofs.
The hot and humid Australian summers can be detrimental for the roof because if the heat remains trapped within the roof space, which can happen from poor ventilation, it can damage the roof material and cause several problems. The biggest threat is that the timber used for the roof structure might dry up and eventually cause its decay that may require costly services related to Roof Restorations Brisco. It is therefore essential to ensure proper ventilation to drive out the heat from the roof surface.
Why you need roof ventilation
Besides driving away heat, roof ventilation helps in other ways too. In winter, roof ventilation helps to prevent the build-up of moisture,and in extremely cold climates that experience ice and snow formation on roofs, ventilation prevents the formation of ice dams. Having proper roof ventilation protects the roof in all kinds of climates besides maintaining a comfortable indoor climate and helps to reduce the load on the air conditioner thereby saving money on energy. However, the summertime benefits are more obvious.
Whirlybird for ventilation
Laying an energy efficient foil with high reflective properties is the most practised method of insulating roofs for protecting the roof surface from the elements of weather and creating a comfortable living environment inside homes. However, this method has a downside because it seals moisture and air in the roof space that can encourage fungus growth. Therefore, the ideal solution is to use a combination of ventilation together with insulation.
Installing whirlybirds on the roof helps to achieve the goal of keeping roofs insulated and ventilated. The whirlybird is a simple device comprising of a cylindrical dome that spins when the wind hits it thereby creating a vacuum that sucks out the hot air trapped within the roof cavity. Whirlybirds are effective,low-cost solutions because it is easy to install and does not require any maintenance or very little maintenance.
It has some downsides
Since the performance of whirlybirds is dependent on a natural factor like wind, it will not function at all on days when there is no wind. If you are living in an area that experiences dry summers, better not think about whirlybirds. Another problem is that whirlybirds remain operational in winter too thereby resulting in heat loss that no one would like. Noise is another problem because when there is a strong wind blowing, whirlybirds can be quite noisy and disturbing. Whirlybirds are prone to corrosion and does not have a long life.
However, you can make a start with whirlybirds and then replace it with a solar vent which offersa more stable solution in the same price range.
December 5, 2018