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FAQ

Frequently Asked Questions | FAQ

Do Whirlybirds Work?

Yes, whirlybirds do work to allow the hot air and moisture trapped within your roof cavity to escape naturally. Whirlybirds also provide a high level of air quality for your home by preventing the build up of any fumes, stale air or damaging condensation. Whirlybirds are essentially designed to cover and protect a hole in your roof. Hot air and moisture can rise up and escape through a whirlybird – whilst the whirlybird turbine and flashings prevents any rain water from entering the roof.

For more information on How Whirlybirds Work, please visit our blog post here.

Do Whirlybirds Lower Temperature?

It is difficult to say whether or not whirlybirds will lower the temperature of your home. It is very much dependent on what is actually causing the build up of heat, as well as the architectural design and construction of your house. A single CSR Edmonds Windmaster Whirlybird (the standard whirlybird we install) is rated to change the air within 90m2 of roof cavity at least once per hour. With a sufficient number of whirlybirds installed, enough hot air may be able to escape in order to lower the temperature within your home. This can be further increased with the installation of internal ceiling vents throughout.

However it is generally considered that the air within a roof cavity needs to be changed at least 8 times per hour in order to provide a cooling effect. Changing the air 8 times per hour prevents the roof members from heating up, which in turn prevents heat from traveling downwards in to your living spaces. This number of air changes can only be adequately achieved by installing powered roof vents.

For more information on our Powered Roof Vents, please visit our blog post here.

For more information on How Whirlybirds Work, please visit our blog post here.

Do we Install Solar Powered Roof Vents?

Yes we do install solar powered roof vents. The model we install is the Dyna-air 20 Watt solar powered roof vent. It has a maximum output of 2290 cubic metres per hour (1350 Cubic Feet per Minute), which is equivalent to 18 standard whirlybirds. The Dyna-air 20 Watt solar powered roof vent is designed to balance the temperature throughout your home by assisting internal ceiling vents to exhaust the hot air and humidity from your living spaces.

For more information on our Solar Powered Roof Vents, please visit our blog post here.

Do I Need an Electrician to Install my Mains Powered Roof Vents?

No, our Mains Powered Roof Vent pricing already includes the connection of your vents by a Licenced Electrician. Our Licenced Electrician will install a 240 Volt AC electrical socket within 1.5m of your AiroMatic roof vents. This allows for the power supply of your AiroMatic roof vents to be plugged directly into mains power.

If you would like the option to turn your AiroMatic roof vents on and off from a wall mounted electrical switch, you will need to organise this yourself through your own electrician.

For more information on our Mains Powered Roof Vents, please visit our blog post here.

Where Can Whirlybirds be Positioned on a Roof?

Whirlybirds are generally positioned at the very top of a roof along the highest ridge line. This positioning allows whirlybirds to work most effectively, as hot air and moisture will naturally rise and accumulate at the highest point of a roof, where it can escape through the whirlybirds and in to the environment.

However whirlybirds can be installed anywhere on a roof. If you have a particularly problematic area of your home that requires ventilation, you can install a whirlybird on the roof directly above this area. For tiled rooves, this is not a problem at all. However with metal rooves, an additional dry pan flashing is required to protect and prevent water from penetrating under the upper edge of the whirlybird base.

For more information on the Positioning of Whirlybirds, please visit our blog post here.

Where Should Whirlybirds be Positioned on My Roof?

We try to position the whirlybirds on the rear aspect of your roof as much as possible in order to preserve the aesthetics of your home and maintain its natural street view. Our tradesmen are all experienced roofers who are skilled at finding the best possible locations for your whirlybirds.

However we can position the whirlybirds wherever you would like them. We use satellite imagery of your roof to plan positioning prior to installation. And our tradesman are more than happy to discuss all the possible locations with you on the day.

If you would like your whirlybirds positioned in a location other than at the very top of the roof, some further considerations may be necessary. For tiled rooves, this is not a problem at all. However metal rooves will require the installation of additional dry pan flashings to protect and prevent water from penetrating under the upper edge of the whirlybird bases.

For more information on the Positioning of Whirlybirds, please visit our blog post here.

Do Eave Vents Make Whirlybirds More Effective?

Yes eave vents do make whirlybirds more effective. Eave vents are essentially like intake valves, allowing cool fresh air to be drawn in through the eaves at the bottom of the roof. This increases the flow rate of air throughout the roof cavity and also increases the exhaust rate of hot air through the whirlybirds at the top of the roof. The minimum number of eave vents recommended by the whirlybird manufacturer is 4 per roof, with additional eave vents required for larger houses or multiple whirlybird installs.

For more information on How Eave Vents Work, please visit our blog post here.

Are Ceiling Vents Necessary?

Ceiling vents allow hot air, fumes and moisture to be drawn up through your ceilings and in to the roof cavity, where it can be exhausted in to the environment by whirlybirds and roof vents. We recommend one ceiling vent for every room with air quality issues. And we currently offer two types of ceiling vents – a circular always Open Ceiling Vent and a square Closeable Ceiling Vent. The Closeable Square Ceiling Vents are useful for controlling air flow during Summer and Winter, as well as for managing rooms with air conditioning.

For more information on our Ceiling Vents, please visit our blog post here.

Do we Replace Noisy or Seized Whirlybirds?

Yes we do replace noisy or seized whirlybirds, however please contact our office for an estimate on how soon we can attend onsite.

Generally whirlybirds are installed in pairs and when one whirlybird starts to go, the other one isn’t far away. Standard residential whirlybirds have an average life span of between 10 and 15 years (the CSR Edmonds Windmaster Whirlybirds we install come with a 15 year parts warranty). So when it comes to replacing whirlybirds that have failed due to old age, we always recommend replacing both of them at the same time – as it is 25-30% cheaper for you to replace both whirlybirds, compared to replacing one whirlybird now and the other one down the track.

For more information on Replacing Noisy or Seized Whirlybirds, please visit our blog post here.

Can Whirlybirds be Repaired?

Yes whirlybirds can be repaired. The most common cause of whirlybird failure is for the bearings to rust or seize. This can result in the whirlybird turbine making noise, slowing down or prevent it from spinning all together. Replacement whirlybird bearings can be purchased separately – by simply looking up the manufacturer’s data sheet and searching for the listed bearings on the internet.

However we do not recommend whirlybird repairs. We found that when repairing whirlybirds in the past, further issues would always seem to arise resulting in additional call outs and costs. As such, we simply recomend replacing the entire whirlybird unit. This not only saves money (by preventing unnecessary call out fees) but ensures your whirlybirds are brand new and completely problem free. We also guarantee peace of mind with our 15 year parts and labour warranty.

For more information on How Whirlybirds Work, please visit our blog post here.

 

Do we Provide a Warranty on our Whirlybird Installations?

Yes we provide a 15 year parts and labour warranty on all our whirlybird installations. We use CSR Edmonds Windmaster Whirlybirds as standard for all installations – the best quality whirlybirds available on the Australian market.

 

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