How to add a roof ridge vent to an existing roof 1.
Installing roof ridge vent existing roof.
Snap a chalk line on either side of the ridge that is about an inch from the peak and cut the shingles along both.
A shingle over vent is installed over the ridge of a roof and is covered over by asphalt shingle caps that match the surrounding roof shingles.
The ridge of the roof is prepared similarly for both types of ridge vent.
A ridge vent is an important part of a home s roofing system.
Installed at the peak of a sloped roof the ridge vent allows damp warm air to escape from the attic.
An aluminum ridge vent has a mushroom shaped profile combined with a wide flange on both sides that sits on top of the roof shingles.
A properly installed ridge vent increases energy efficiency and prolongs the life of your roof.