As they spin these vents suck the air out of the container.
Installing whirlybird roof vent.
This video demonstrates the installation of a whirlybird roof ventilator on a trimdek metal roof.
A roof vent also known as also known as turbine or whirlybird vents are installed in shipping container roofs.
This technique is also known as cross ventilation.
Installing a roof ventilator whirly bird installing a twista whirlybird is best done by a trained professional ensuring that a weatherproof seal is restored to the roof and that the twista is operating at it s best.
Often one vent is installed low and the other one s placed high diagonal from one another.
For example if the length of the roof is 21 meters and you want to install 2 whirlybirds you could measure 7 meters to the centre of the first whirlybird then 7 meters from there to the centre of the second whirlybird leaving a final 7 meters to the other end of the roof.
If you re a qualified tradesperson you may like to follow these for whirly bird vent installation also.