Whirly Bird Installation
Whirly birds are a wind driven turbine ventilator designed to exhaust heat & moisture from the roof space of a home, without the use of electrical energy. Constructed from light-weight aluminium, it comes with a 15 year warranty for long lasting peace of mind and comfort in your home.
During the summer months, temperatures in roof spaces can reach levels as high as 60ºC, causing discomfort in living areas. Cooler months can be just as much of a problem with the roof cavities becoming very humid and sticky. This can cause mildew on walls and ceilings, which can contribute to a damp environment.
Here at Roof Ranger we believe that installing a wind master whirly bird can be a great solution to the problems listed above.
Wind master whirly birds are available in an extensive range of 28 colours to suit most roof options.
How many WindMasters do I need?
The number of whirly birds you will need will vary based on your roof size and reasons for ventilating. As a general recommendation, 1-2 whirly birds is sufficient per 90m2 of roof space.
However, for the best results contact us at Roof Ranger and we can help you with a solution, custom to your needs.





Frequently Asked Questions (FAQs)
A whirlybird is a wind-powered ventilator installed on your roof to remove hot air and moisture from your roof cavity, improving airflow and cooling your home.
- Lowers roof cavity temperature, reducing heat transfer into your home
- Helps prevent mould, condensation, and structural damage
- Reduces reliance on air conditioning, leading to energy savings
- Operates silently without electricity costs
- The number depends on your roof size and ventilation needs. A standard home may need 1–2 units, while larger homes may require more. A roofing professional can assess the best setup.
- Yes, they function in both hot and cold weather by improving airflow. However, their effectiveness depends on wind speed—low wind conditions may reduce ventilation efficiency.
- Quality whirlybirds are designed to operate quietly. If you hear excessive noise, it may be due to poor installation, worn bearings, or damage.