Question about whirlybird vents

[Ben Staples]

I just had two whirlybird vents installed in my triplex as I was doing the roof to increase ventilation.  My roof has a pretty steep grade, and the contractor installed them at the angle of the roof.  Do whirlybird vents need to be installed level to work, or can they function if installed at an angle

[David Dachtera]

Are you talking about "turbine" vents?

They are wind-driven. Any build up of deposits - dirt, debris, etc. - will make them off-balance and either not rotate properly or be noisy (think of an off-balance washer in the spin cycle).

Some of them allow installation of extension ducts so joints can be used to make up for the off-level.

[Ben Staples]

thanks @David Dachtera  yes that is correct. 

[Scott C.]

@Ben Staples Here is a great resource all about roof ventilation.

http://www.airvent.com/ 

[Ben Staples]

hey @Scott C. thanks for that resource. I've reached out to them and will update the thread with findings. They really do seem like experts. 

Ben 

[Ben Staples]

Thanks for the resource @Scott C.

Here was there response: "Whirlybird roof vents will still work if installed on and angle. However, it won’t be to their full potential. Also by the vent being installed incorrectly can lead to increased bearing stress and voids warranties."

I have had my roofers come back, and correctly adjust the vents!

Ben