Wind driven roof vents will pull more air from the attic but only when the wind is blowing.
Turbine roof vent not spinning.
Climb the ladder remove the access panel and enter the attic.
If the flashing is loose against the roof secure it with.
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.
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Flat roof vents have no moving parts to break or squeak but don t vent as much air as wind driven vents.
Place the stepladder under the attic access space.
The popular ridge and soffit ventilation systems and the traditional metal pot vents are also passive ventilation systems.
It s not uncommon for insulation to have been jammed tight out to the edge of the roof.
Climb up into your attic and look at the vents from the inside.
Inspect your turbine vent and make sure the top spinning portion is securely anchored to the standpipe using sheet metal screws.
They sell foam channels you can staple to the underside of the room to allow for airflow while still allowing insulation to be installed.
If the vents are blocked by insulation boxes or other obstructions heat will not be able to escape through them and they will not spin.
This is a bad thing because it blocks the air flow.
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.
These are located in the track where the pipe coming out of the roof meets the spinning part of the vent.
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If they spin freely but just sit there when on your roof i d say they aren t level.
Clear away any debris or insulation blocking the vents to re activate the spinning turbine.
Our turbine roof vents whirlybirds were really noisy and had some rattling that was causing some vibration in the house.
You can usually adjust the level by turning the turbine body.
Find roof turbine vents at lowe s today.
A turbine vents spins with the slightest breeze.
It was very annoying.