Whirlybirds come in two types, passive and active. Passive whirlybirds work through the power of wind, while those that are classed as active require a motor to ventilate an area.
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About the Author: Adam Dean
Adam has 28 years of roof tiling and restoration experience, he has been running Fremantle Roofing Services since its inception and is still trying to improve the business and its reputation. Adam has worked on everything, Often a little grumpy before 10 am but otherwise always happy to discuss the job and explain exactly what’s going right or wrong with your roof.
