How To Install Roof Vent For Bathroom Fan

If the hole is too big you ll need to patch the ceiling.

How to install roof vent for bathroom fan.

Idea 5 connecting the duct to the bathroom fan remove the tape from the fan first. Next we must slip a worm drive metal clamp on the inside part of duct liner. 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. 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.

Apply roofing adhesive on the underside of the flanges to seal. Use an extra long 3 8 inch diameter spade bit to bore a reference hole through the ceiling and into the attic. Center the nail between two rafters. Then drill a hole on the roof top.

Over there mount the vent hood using tri polymeric locking seal paste and put the nails to strengthen it. 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. From inside the attic drive a nail through the roof directly above the bathroom vent fan. Several different ways you can move that hot air to the outside.

Cut a piece of drywall to make the ceiling hole the right size for your fan. The lower half of the flange sits on top of the shingles. Check the damper and the screen in prior to installation. To vent a bath fan through the roof you must first prepare a ductwork connecting the roof top to the bathroom.

Climb into the attic and clear away any insulation from around the hole. For optimum performance locate it between the shower and the toilet. The patched areas can be repaired with spackling later. Nail the lower corners with roofing nails and tar the heads.

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. In this video this old house general contractor tom silva shows how to properly install a roof mounted bath fan vent. Slide the vent under the shingles so they cover the top half of the vent flange.

How to install a bathroom fan vent in the soffit. Secure the vent flanges with roofing nails before installing the shingles.