Since this is a new installation not a replacement your bathroom will not have ducting.
How to install roof vent bathroom fan.
For optimum performance locate it between the shower and the toilet.
Slide a flat pry bar underneath the.
Slide the vent under the shingles so they cover the top half of the vent flange.
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.
Choosing a whole house fan.
Then drill a hole on the roof top.
From the roof find the nail and use the utility knife to cut roof shingles from around the nail.
Draw a mark on the bathroom ceiling where you d like to install the vent fan.
Wrap the joints with duct tape.
Apply a bead of asphalt roof cement on the bottom of the vent.
How to vent a bath fan through the roof 1.
Use an extra long 3 8 inch diameter spade bit to bore a reference hole through the ceiling and into the attic.
Slide clamps over the flexible duct at both the roof cap and the fan housing then slip the clamps over the tailpieces.
Center the nail between.
To vent a bath fan through the roof you must first prepare a ductwork connecting the roof top to the bathroom.
Table of contents hide.
Over there mount the vent hood using tri polymeric locking seal paste and put the nails to strengthen it.