A closed attic space is needed to force the whirly bird to draw air through the vents.
Worly birds roof.
It must be said however that the general effectiveness of whirlybirds is dependent on the type of house.
Howbeit this option brings the challenge of contending with a little bit of noise coming from the machine around the home.
The best way to combat this is a combination of insulation and ventilation.
Of vented area for every 300 sq.
Roof vents australia pty ltd offers domestic and industrial services of whirlybird vents direct venting solar vents mini whirlybirds roof vents exhaust fans industrial vents commercial skylights and static vents.
How much air must be moved.
Otherwise the whirly bird will just draw air through the gaps in the roof tiles locally and not produce much cross ventilation.
Find roof turbine vents at lowe s today.
First more people prefer the turbine type one for more effective roof ventilation.
While roof blanket or sisalation is one way to reflect heat the downside is it seals air and moisture in your roof space which can encourage growth of fungus.
One of the most popular options for roof ventilation is the commonly seen whirlybird.
Also whirlybirds are less effective if you have no sarking under the roof.