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.
How to install a roof vent on an existing roof.
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.
Next position your ladder against your home and climb up to your roof.
Take your time and do not use a straight blade use a hook blade you can get it at home of the deep.
Insert an end plug into a section of ridge venting and align the end with the end of the roof.
5 add sections to.
Nail the section down by driving 2 inch roofing nails through the holes provided.
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The installation of a turbine vent is nearly identical to a static vent.
This video is a comprehensive rundown on how to install a roof vent on a pre existing shingle roof.
Drill a hole upward through the middle of the area you desire and leave the drill bit sticking up through the roof so you can find it from the outside.
A roofer will from the attic mark a spot near the ridge of the roof he may first use nails from the attic to mark preferred spots between two rafters.
Plenty more videos t.