Turbine Roof Vents How They Work

A turbine is installed directly on the top of a roof and uses wind power to suck hot and humid air out of the attic.

Turbine roof vents how they work. All things being equal wind driven turbine vents also known as a whirlybird roof vent do move more air than flat vents but only when the wind blows. A turbine vent is a passive ventilation device. It houses a circular fan that s very sensitive to breezes. Cool air in hot air out attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.

Intake vents located at the lowest part of the roof under. A turbine has a series of vanes that spin as wind passes through them. A turbine vents spins with the slightest breeze. While a turbine looks a little complex at first glance it s actually very simple.

The same steps can be used when doing a whirlybird roof turbine vents. The popular ridge and soffit ventilation systems and the traditional metal pot vents are also passive ventilation systems. A small 12 inch diameter turbine vent with a constant wind speed of 5 miles per hour mph can remove 347 cubic feet of air per minute cfm from the attic space. Much like a window this round vent is powered by the wind.

Whirlybird roof turbine vents are as easy to install as turtle vents and are one of the most popular ways remove hot air out of the attic space. Dependable construction has made a video on how to replace a turtle vent on a roof. A ridge vent runs across the top of the roof s peak. Because warm air rises up the wind powered vents with their spinning action tend to suck the air outside.

Wind driven roof vents will pull more air from the attic but only when the wind is blowing. A single 14 inch diameter turbine vent that is subjected to 15 mph winds can expel up to 1 342 cfm of air. Flat roof vents have no moving parts to break or squeak but don t vent as much air as wind driven vents. The intake should be installed at the soffits or blocking where the walls meet the roof.

When the wind blows the right way it turns the fan which in turn draws up air from the attic and disperses it. Find roof turbine vents at lowe s today. How do turbine roof vents work.