To install a roof vent start by choosing a good location from inside the attic and then pound a nail all the way through the roof at that location so you can find the spot from outside.
How to install a roof vent for bathroom fan.
Choosing a whole house fan.
This video is a comprehensive rundown on how to install a roof vent on a pre existing shingle roof.
Draw a mark on the bathroom ceiling where you d like to install the vent fan.
From inside the attic drive a nail through the roof directly above the bathroom vent fan.
How to install a bathroom fan vent in the soffit.
In this video this old house general contractor tom silva shows how to properly install a roof mounted bath fan vent.
Use an extra long 3 8 inch diameter spade bit to bore a reference hole through the ceiling and into the attic.
This way we can make sure both are positioned properly.
If you have any questions or comments at all please comme.
Check the damper and the screen in prior to installation.
Next we must slip a worm drive metal clamp on the inside part of duct liner.
The lower half of the flange sits on top of the shingles.
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.
Climb into the attic and clear away any insulation from around the hole.
Center the nail between two rafters.
Idea 5 connecting the duct to the bathroom fan.
For optimum performance locate it between the shower and the toilet.