What Consumers Should Know About Whirlybird Ventilation

December 24, 2019 Roof ventilation

What Consumers Should Know About Whirlybird Ventilation

Imagine a typical room without proper means of ventilation and insulation. Wouldn’t it be too hot and unbearable, especially in the extreme summer heat? Of course, it would! That is why many homeowners would resort to air conditioning to keep themselves cool. Some may even install window blinds and furnishings to reduce the heat that passes through the windows.

Heat, however, still seeps through your ceilings, and they can get so hot, but you won’t even notice. Therefore, you should be aware of other means to dissipate the heat from your ceilings. Roof whirlybirds are an excellent example of this roof ventilation.

What is Whirlybird ventilation?

Roof whirlybirds are a common type of roof ventilators. They help manage the roof and ceiling temperatures that can make summer unbearable. As such, they can cut you’re your costs on air conditioning. Moreover, they reduce the risk of heat-related conditions.

The whirlybird is perhaps the most recognisable roof ventilator because of its appearance. They are round and rotating roof turbines that roughly resemble steamed buns. They have been around for over a century now. Samuel Ewart in 1910 first patented Whirlybirds. While there are many varieties of the whirlybird these days, they all function similarly.

How does Whirlybird Ventilation work?

Nowadays, whirlybirds come in two types: the conventional, wind-driven whirlybirds, and the mechanical, power-driven whirlybirds.

The conventional and wind-driven whirlybirds rely on the wind to hit the turbine, allowing it to rotate. Mechanical whirlybirds, on the other hand, work similarly as exhaust fans and rely on power to rotate. Either way, these rotations allow hot air in the roofs and ceilings to dissipate out of the roof. However, a single conventional whirlybird is not enough for a modern home. It usually takes four to six whirlybirds to keep the roof ventilated in the summer.

What are the effectiveness and advantages of Whirlybird Ventilation?

On average, each whirlybird unit is capable of ventilating an area of 100 to 150 cubic metres per hour. These usually depend on the type or model of the whirlybird unit, the current daily temperature, and the size of the room. Also, on average, you will start to feel the cooling effects of whirlybirds at around 700 cubic metres per hour. That means you will need around six whirlybird units to experience the effects of this roof ventilation.

There are also advantages in using each of the specific types of a whirlybird unit. For instance, conventional whirlybirds help reduce energy expenses. You only need to rely on the wind for the ventilation unit to work. On the other hand, mechanical whirlybirds, while they consume energy, are more reliable 24/7.

Another advantage of whirlybirds is that they are reasonably cheap, accessible, and easy to install. Most modern methods of roofing ventilation can break the bank. Whirlybirds, on the other hand, are reasonably priced at around $60.00 and above. They are also easy to set up. Depending on the unit or model, you can even install them easily on your own.

What are the downsides of Whirlybird Ventilation?

While it has its perks, the whirlybird unit has its flaws. A common problem with whirlybirds, especially the conventional design, is that they rely on airflow. In other words, the whirlybird turbine will not spin if there is no wind. Also, because they use rotating turbines, they can be extremely noisy when they run. The inconvenient sounds can usually include grinding and squeaking noises.

Moreover, the whirlybird design is not the best type of roof ventilators around. They can be cheap, yes, but it would take you more than six units for them to be as effective as the other types. For instance, the solar-powered roof ventilators, despite being expensive, are efficient enough to keep your home heat-free.

Do you need Whirlybird installations and repairs? Call Amazing Roof Restorations today!

If you’re thinking of installing or repairing roof ventilators such as whirlybirds, look no further. We at Amazing Roof Restorations has the best roofers in Newcastle, and we offer all kinds of roof ventilation services you need. Contact us today at info@amazingroofrestoration.com.au or call 02 4944 2085 or  0413 933 110 for your enquiries.

Enquiry Form

  • This field is for validation purposes and should be left unchanged.