How To Install Roof Vent Bathroom Fan

How to vent a bath fan through the roof 1.

How to install roof vent bathroom fan.

For optimum performance locate it between the shower and the toilet. Choosing a whole house fan. To vent a bath fan through the roof you must first prepare a ductwork connecting the roof top to the bathroom. Use an extra long 3 8 inch diameter spade bit to bore a reference hole through the ceiling and into the attic.

Climb into the attic and clear away any insulation from around the hole. Slide the vent under the shingles so they cover the top half of the vent flange. Venting means that after air from the bathroom is drawn into the exhaust fan it is blown through a connected flexible duct and out of the house through a hole in the side of the house or roof. Slide clamps over the flexible duct at both the roof cap and the fan housing then slip the clamps over the tailpieces.

Since this is a new installation not a replacement your bathroom will not have ducting. The lower half of the flange sits on top of the shingles. Table of contents hide. Wrap the joints with duct tape.

Center the nail between. From inside the attic drive a nail through the roof directly above the bathroom vent fan. Slide a flat pry bar underneath the. Nail the lower corners with roofing nails and tar the heads.

Draw a mark on the bathroom ceiling where you d like to install the vent fan. From the roof find the nail and use the utility knife to cut roof shingles from around the nail.