To seal the ridge from weather. If a ridge vent is used it is just that, a vent for the roof.
Rake overhangs are not as critical to vent as are the rafter spaces above the living areas, but for the sake of appearance, the entire ridge is usually covered with venting.
ridge vent and powered
A shingled roof requires ventilation. That can be done several ways. Gable vents, turbine vents, air hawks or ridge vent. It is also important that your soffits are vented to get proper airflow.
The apex of roof is basically the highest point of the roof where ridge cap and ridge roll of a roof is located.
WHICH VENT If you're talking plumbing roof vents or soffit or ridge attic air vents; absolutely not!! I can't thing of a single vent that would be opened and closed at will.
jesus
To seal the ridge from weather. If a ridge vent is used it is just that, a vent for the roof.
it's easy go with a ridge vent ,remove the caps on the peak of the roof,save them if you can.cut the ridge open with a skill saw , make sure you set the blade on the saw so you do not cut to deep. about 1 in down from the top. do this on both sides of the peek.install the ridge vent and then nail your caps back on.
ocean ridge abyssal plain continental shelf continental slop hydrothermal vent
ocean ridge abyssal plain continental shelf continental slop hydrothermal vent
certainly, cut them 12" wide