Install Bathroom Exhaust Fan Vent Roof

Options for venting a bathroom exhaust fan include best to worst.

Install bathroom exhaust fan vent 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. 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. Then drill a hole on the roof top. The lower half of the flange sits on top of the shingles.

From inside the attic drive a nail through the roof directly above the bathroom vent fan. It is because of this that many builders tend to advise against this method. Slide the vent under the shingles so they cover the top half of the vent flange. Also bring your reciprocating saw cordless drill pencil and silicone caulk.

The patched areas can be repaired with spackling later. Bring your round vent for walls or vent cap for roofs. Table of contents hide. Center the nail between two rafters.

Secure the vent flanges with roofing nails before installing the shingles. 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. Through the roof or an exterior gable wall. When venting a bathroom exhaust fan make sure to vent the air to the outside rather than into your attic where it can cause mold and mildew to form.

This involves running ductwork from the fan usually though an attic and out through the roof. Apply a bead of asphalt roof cement on the bottom of the vent. 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. To vent a bath fan through the roof you must first prepare a ductwork connecting the roof top to the bathroom.

From the roof find the nail and use the utility knife to cut roof shingles from around the nail. Nail the lower corners with roofing nails and tar the heads. Over there mount the vent hood using tri polymeric locking seal paste and put the nails to strengthen it. Apply roofing adhesive on the underside of the flanges to seal.

If the hole is too big you ll need to patch the ceiling. Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof. In this video this old house general contractor tom silva shows how to properly install a roof mounted bath fan vent.