With the pipe in a vertical position trace around the pipe using a pencil.
How to install a bathroom vent through roof.
Then drill a hole on the roof top.
Over there mount the vent hood using tri polymeric locking seal paste and put the nails to strengthen it.
Center the nail between.
Apply a bead of asphalt roof cement on the bottom of the vent.
From the roof find the nail and use the utility knife to cut roof shingles from around the nail.
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How to vent a bath fan through the roof 1.
So if you like then climb a couple ladders with me an.
I really hate cutting holes in roofs but it was this or run 15 feet of vent hose through a gable end.
Slide a flat pry bar underneath the.
Nail the lower corners with roofing nails and tar the heads.
Go into your attic.
From inside the attic drive a nail through the roof directly above the bathroom vent fan.
The lower half of the flange sits on top of the shingles.
Position the vent pipe up to the bottom of the roof.
If you have any questions or comments at all please comme.
This video is a comprehensive rundown on how to install a roof vent on a pre existing shingle roof.
Slide the vent under the shingles so they cover the top half of the vent flange.