They have fins that open when they turn in the wind and this spinning action creates suction that draws hot humid attic.
How to remove a roof turbine vent.
In fact when i was headed to the last vent i noticed the the others were spinning on their own quietly with only the slightest hint of wind wafting by.
I ambled around the roof shooting wd 40 specialist spray stay gel lubricant into all the vents getting them spinning smooth and easy.
Roof mounted wind turbine vents versus aura gravity ventilators.
Use a pry bar to pull the mounting.
Lift the shingles covering the flashing of the existing turbine base to expose the mounting nail heads.
Lift the existing turbine away from the roof exposing the vent hole into the attic.
Especially if they are the kind that you cannot just turn off with a switch.
But you can fix it if you are able to get up on the roof to get to it.
And they are hard to reach so it is not like you can just spray them with lube easily.
Measure the vent hole to.
Turbine vents are a type of exhaust vent.
Features compared side by side.
A squeaky turbine vent can be terribly annoying.
Picture above shows both roof vents a rotary turbine vent on the left and an aura gravity ventilator on the right with curb mount flanges.