To install a roof adaptor cut and clean the hole in the roof as you would normally.
How to install a roof fan vent.
Apply a bead of asphalt roof cement on the bottom of the vent.
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Drip edge vents are a two in one installation that promote water shedding at the eaves and rakes of a roof while also allowing for ventilation into the attic.
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Before you begin make sure all factory installed bolts are tightened.
To install a roof adaptor cut and clean the hole in the roof as you would normally.
Mount it as near to the roof ridge without it being visible from the front of the house.
Then cover the bottom of the adaptor with 3m marine sealant and clamp it to the roof until dry.
The pilot hole you drilled should be in the center of the circle.
The lower half of the flange sits on top of the shingles.
Draw a circle on the roof matching the diameter of your fan.
So there you have it.
Then get on the roof and draw the circle around the pilot hole with a piece of chalk.
Afterward install the vent fan flange as you normally would.
Then cover the bottom of the adaptor with 3m marine sealant and clamp it to the roof until dry.
A drip edge vent is made of a corrosive resistant material that sticks out about three inches back from the roof edge and then bends downward over them.
Afterward install the roof vent fan flange as you normally would.
Nail the lower corners with roofing nails and tar the heads.
Slide the vent under the shingles so they cover the top half of the vent flange.