At this point take the whirlybird up to the top of the roof and place it centrally over each hole you have drilled tracing out the perimeter of the cylinder on the outside of the roof sheet.
How to install a whirlybird on a metal roof.
Roof whirlybird installation might just be the answer.
Once you have purchased the wind turbine its time to install it on your roof.
While whirlybirds are not an eye sore they do break up the lines of the roof therefore keeping them out of sight can improve the overall aesthetic of your property.
This video demonstrates the installation of a whirlybird roof ventilator on a trimdek metal roof.
In case it is a tiled roof you will have to eliminate the tiles surrounding the place that you will be cutting through.
You need to have a suitable saw blade for your reciprocating saw if you have a metal roof.
Then remove the whirlybird and starting from the centre hole cut out the circle you have drawn.
Most homeowners prefer installing the whirlybird on the side of the roof that is out of sight.
Use silicone to prevent leaks note can also install underneath the whirlybird base for extra leak prevention 10.
Place the whirlybird tube onto the base 11.
If you are installing more than one whirlybird you must install them an even.
Install the top whirlybird.