The one thing i ll mention is that turbine vents need to be installed perfectly level.
Roof turbines not turning.
The hot air is exiting the roof through the louvers at each end of the roof as they were designed to do.
The new turbine needs hot air to flow out to turn the impellers.
If the vent is rusted it may be sticking and not turning as it should and this can lead to water infiltration.
If the wind is blowing and catches the fins then the turbines act like giant vacuum pumps sucking hundreds of cubic feet of hot air out of an attic per minute.
It doesn t take much wind to turn your turbine roof vents.
Just hot air rising out of one will make it spin.
Do you see anything else that s wrong in the photo.
Finally be sure the ball bearings are permanently lubricated and sealed.
If they spin freely but just sit there when on your roof i d say they aren t level.
Not all turbines will fit all roof pitches.
2 of my 3 turbine vents on my roof won t turn unless there s a stronger wind.
In the photo below the vent on the left wasn t level.
My attic turbines are not turning step 1.
Also barely using my finger of course they spin freely no noise etc.
If the vents are blocked by insulation boxes or.
Do i have a low pressure system.
A turbine may fail to spin if the bearings become rusty or.
When they re not installed level they don t turn.
Nothing is more bothersome in the middle of a.
There may also be something near or in the vent that is stopping it from turning.
Examine the turbine from the exterior from the roof.
Since they are only 4 years old i m guessing they were replacements so maybe the wrong ones were installed not all turbines work with all roof pitches or these just haven t been leveled correctly.
You may have to replace the turbine with an electric fan type of ventilator.
The maximum roof pitch is almost always printed on the box label.
The turbines are adjustable so that the spinning part is level even though the roof is slanted.
This is a standard turbine vent.
If yours aren t turning it s time to lubricate or replace entirely.
The faster the wind speed the faster the turbine rotates.
Walking around my soffits yes i do have soffit vents and from the attic i can see sunlight in.
You can usually adjust the level by turning the turbine body.