Install Bathroom Exhaust Fan Vent Roof

In this video this old house general contractor tom silva shows how to properly install a roof mounted bath fan vent.

Install bathroom exhaust fan vent roof.

Then drill a hole on the roof top. Center the nail between two rafters. Slide the vent under the shingles so they cover the top half of the vent flange. This involves running ductwork from the fan usually though an attic and out through the roof.

Attach the drywall filler to a larger piece of wood set it in the hole and drive screws through the ceiling into the wood. Cut the exterior vent location depending on where you intend to exhaust to the exterior access either the side wall or the roof of the house. Options for venting a bathroom exhaust fan include best to worst. Also bring your reciprocating saw cordless drill pencil and silicone caulk.

Secure the vent flanges with roofing nails before installing the shingles. The lower half of the flange sits on top of the shingles. Over there mount the vent hood using tri polymeric locking seal paste and put the nails to strengthen it. Apply a bead of asphalt roof cement on the bottom of the vent.

Apply roofing adhesive on the underside of the flanges to seal. It is because of this that many builders tend to advise against this method. 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. Bring your round vent for walls or vent cap for roofs.

In order to accomplish this the roof has to have a hole cut in it. Cut a piece of drywall to make the ceiling hole the right size for your fan. From inside the attic drive a nail through the roof directly above the bathroom vent fan. Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof.

If the hole is too big you ll need to patch the ceiling. Table of contents hide. Nail the lower corners with roofing nails and tar the heads. Through the roof or an exterior gable wall.

The patched areas can be repaired with spackling later. Some installers particularly in hotels or rental units hard wire the bath exhaust vent fan to force it on when the bathroom ceiling light is on thus assuring that the vent fan is in fact used. From the roof find the nail and use the utility knife to cut roof shingles from around the nail.