Slide the vent under the shingles so they cover the top half of the vent flange.
How to install a roof fan vent.
Use a tape measure to determine the diameter of your fan or check the manufacturer s specifications.
Before you begin make sure all factory installed bolts are tightened.
Mount it as near to the roof ridge without it being visible from the front of the house.
Be sure to like and subscribe in order to help me bring you more helpful videos filled with tips and tricks i ve learned over the years.
Apply a bead of asphalt roof cement on the bottom of the vent.
Draw a circle on the roof matching the diameter of your fan.
Mount the vent as close to the center of the house as possible.
The pilot hole you drilled should be in the center of the circle.
Nail the lower corners with roofing nails and tar the heads.
Plenty more videos t.
Then cover the bottom of the adaptor with 3m marine sealant and clamp it to the roof until dry.
The lower half of the flange sits on top of the shingles.
Then get on the roof and draw the circle around the pilot hole with a piece of chalk.
Then cover the bottom of the adaptor with 3m marine sealant and clamp it to the roof until dry.
So there you have it.
Afterward install the vent fan flange as you normally would.
Consider two things for maximum performance when you choose the location of the vent.
To install a roof adaptor cut and clean the hole in the roof as you would normally.
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.