Because it has no moving parts it is unlikely to break.
Pros and cons of to roof fans ridge vent.
List of the cons of roof ridge vents.
These types of vents contain motors that drive large fans.
A properly installed roof ventilation system should be constructed in a wave that creates a constant flow of fresh air throughout the attic.
If you were to install about 40 feet of roof ridge vent the area would span up to 10 turbines in this case 10 turbines would cost you substantially more to purchase and install.
Used in conjunction with soffit vents which allow air to enter the attic a ridge vent can be one of the most effective ways to provide ventilation to your attic.
You ll be able to move air throughout the attic without the use of fans or turbines when enough space is given to this vent design.
But the ridge vent maintenance and running cost is a lot less than for turbines when.
What are the cons.
Generally his is accomplished by either using ridge vent or by installing a soffit under the eaves and then exits near the peak of the roof through which the air can exit.
Cons these are most effective when they are used in combination with a continuous ridge vent.
If you have good continuous soffit venting and a ridge vent then any type of attic fan may be totally unnecessary.
Many times vents are painted over insulation covers soffit venting in attic and the ridge vent is obstructed by roofing felt.
However in my experience most homes do not have the proper passive ventilation.
A ridge vent runs along the entire ridgeline of the roof.
So you have to put more money into ventilation systems than others.
The effect of ridge vents for the roof depends upon the energy efficient nature of the structure.