How To Install Roof Vent For Bathroom Fan

From inside the attic drive a nail through the roof directly above the bathroom vent fan.

How to install roof vent for bathroom fan.

For optimum performance locate it between the shower and the toilet. Table of contents hide. Cut a piece of drywall to make the ceiling hole the right size for your fan. From the roof find the nail and use the utility knife to cut roof shingles from around the nail.

Secure the vent flanges with roofing nails before installing the shingles. Center the nail between two rafters. Apply roofing adhesive on the underside of the flanges to seal. One is to route it over to a soffit vent and attach it to the back of the soffit vent but this can work against your exhaust fan because that s actually an air intake so not as good as other methods.

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. Idea 5 connecting the duct to the bathroom fan remove the tape from the fan first. Draw a mark on the bathroom ceiling where you d like to install the vent fan.

The lower half of the flange sits on top of the shingles. Attach the drywall filler to a larger piece of wood set it in the hole and drive screws through the ceiling into the wood. The patched areas can be repaired with spackling later. Next we must slip a worm drive metal clamp on the inside part of duct liner.

Check the damper and the screen in prior to installation. Several different ways you can move that hot air to the outside. Install the roof vent install the roof vent by sliding the top flange under the shingles above it and resting the bottom flange on the shingles below. How to install a bathroom fan vent in the soffit.

If the hole is too big you ll need to patch the ceiling. Apply a bead of asphalt roof cement on the bottom of the vent. To vent a bath fan through the roof you must first prepare a ductwork connecting the roof top to the bathroom. Then drill a hole on the roof top.

Another method a little bit better is if you have a gable style roof and a gable vent on one end of the house you can attach this to the back of a gable vent. Nail the lower corners with roofing nails and tar the heads.