The penetration will be oval to have a round pipe exit vertically through a pitched roof you need an oval hole in the roof.
Install bathroom vent thru roof.
Install the vent into the ceiling.
For optimum performance locate it between the shower and the toilet.
A single exhaust exits through the roof figure a.
Any person competent in installing an outside vent either thru the roof soffit or gable hip end of the house thru the siding.
Use an extra long 3 8 inch diameter spade bit to bore a reference hole through the ceiling and into the attic.
Nail the lower corners with roofing nails and tar the heads.
Climb into the attic and clear away any insulation from around the hole.
Slide a flat pry bar underneath the.
Slide the vent under the shingles so they cover the top half of the vent flange.
With the pipe in a vertical position trace around the pipe using a pencil.
Cut the hole overhead in the ceiling following the manufacturer s instructions.
Go into your attic.
Attaching the vent pipe in the attic attach the vent pipe from the vent up to the roof.
Center the nail between.
Draw a mark on the bathroom ceiling where you d like to install the vent fan.
In order to accomplish this the roof has to have a hole cut in it.
From the roof find the nail and use the utility knife to cut roof shingles from around the nail.
Apply a bead of asphalt roof cement on the bottom of the vent.
It is because of this that many builders tend to advise against this method.
From inside the attic drive a nail through the roof directly above the bathroom vent fan.
Each bath fan should be on a separate 4 or larger duct and the outside vent portion must have a baffle damper to prevent anything from coming into the duct work.
A grille in each bathroom attaches to ducts which then fasten to a y connector at the fan.
The lower half of the flange sits on top of the shingles.
Plenty more videos t.
Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof.
Choosing a whole house fan.
This system is quiet too.
This involves running ductwork from the fan usually though an attic and out through the roof.
How to vent a bath fan through the roof 1.