Learn about the bird: 10 frequently asked questions about whirlybirds

Proper ventilation is crucial for maintaining a comfortable and healthy living environment in your home. One popular way to improve ventilation is by installing whirlybirds, also known as turbine ventilators or roof vents. Whirlybirds work using wind energy to spin the turbine, creating a vacuum effect that draws hot air and moisture out of the roof space and expelling it outside.

If you are considering installing whirlybirds in your home, you may have some questions about their effectiveness and functionality. In this article, we will answer some frequently asked questions we receive about whirlybirds so you can make an informed decision on whether they are the right choice for your ventilation needs.

What are whirlybirds and how do they work?

Whirlybirds are turbine ventilators that use wind energy to create a suction effect, drawing hot air and moisture from the roof space of your home and expelling it outside. Whirlybirds are installed on the roof of your home, close to the apex, and typically near the ridge cap. They work by spinning the turbine when wind passes over it, which creates a low-pressure zone below the whirlybird and aids in drawing hot air from the roof cavity.

For more information, visit our page - what are whirlybirds?

Are whirlybirds really effective?

Yes, whirlybirds are effective in improving roof space ventilation, reducing heat buildup, and prolonging the lifespan of your roof by reducing the risk of rot and decay. Additionally, whirlybirds can provide relief from condensation build-up caused by trapped air and moisture, which can cause problems like mould and mildew growth.

Do whirlybirds help to cool the house?

Yes, whirlybirds can help to cool your home by reducing the amount of hot air that builds up in the roof space. This, in turn, can reduce the amount of heat that radiates down into the living areas of the house, making it more comfortable inside.

Do whirlybirds make your house colder in winter?

No, whirlybirds are not designed to make a house colder in winter. They are primarily used to ventilate hot and humid air out of the roof space in the summer months. However, they can help to reduce condensation buildup in the winter, which can be a problem in some areas.

Are whirlybirds better than roof vents?

Whirlybirds are a type of roof vent, but they can be considered as an alternative or better option than traditional roof vents. Whirlybirds are more efficient at drawing hot air from the roof space since they use wind energy to spin the turbine and create suction, whereas other types of roof vents rely on convection currents created by the sun’s heat.

Do whirlybirds work without wind?

Traditional whirlybirds need wind to spin the turbine and create suction. This means that they won’t work if there is no wind as they rely on air movement for ventilation. Solar-powered whirlybirds, however, do not require wind and work using solar energy to spin the turbine.

Do whirlybirds let rain in?

No, whirlybirds are designed with a weather-resistant coating that helps to keep water out of the roof cavity. Additionally, they can be fitted with a mesh guard or baffle plate to further reduce the amount of water entering your home.

Do whirlybirds leak if not spinning?

No, whirlybirds are designed to remain watertight even when there is no wind and they are dormant   . 

Do whirlybirds make noise?

Whirlybirds can make some noise as they spin, especially if they are not installed properly or are spinning too fast. However, most modern whirlybirds are designed to operate quietly and are usually only audible in very still conditions.

Where is the best place to put a whirlybird?

The best place to put a whirlybird is in the highest part of the roof, where hot air tends to accumulate. It should be installed on the ridge of the roof, and there should be enough whirlybirds to ensure adequate ventilation for the size of the roof space. It is also important to consider wind direction and other factors that may affect the efficiency of the whirlybirds.

Got more questions? Speak to a member of our team

If you have further questions regarding whirlybird products of installations, be sure to reach out to a member of our team today. We’ll be happy to provide any additional information, make product recommendations, and provide you with a free quote for an installation.