Installing Roof Vent For Bathroom Exhaust Fan

Climb into the attic and clear away any insulation from around the hole.

Installing roof vent for bathroom exhaust fan.

Use an extra long 3 8 inch diameter spade bit to bore a reference hole through the ceiling and into the attic. Slide the vent under the shingles so they cover the top half of the vent flange. If the hole is too big you ll need to patch the ceiling. From inside the attic drive a nail through the roof directly above the bathroom vent fan.

Nail the lower corners with roofing nails and tar the heads. Attach the drywall filler to a larger piece of wood set it in the hole and drive screws through the ceiling into the wood. In this video this old house general contractor tom silva shows how to properly install a roof mounted bath fan vent. If you have two bathrooms that are close together and one has an exhaust fan and the other doesn t you might be.

We explain how to install bathroom exhaust fans or vents the vent ducting the vent termination at the wall soffit or roof vent fan wiring bath vent duct insulation bath vent lengths clearances routing and we answer just about any other bathroom ventilation design or installation question you may have. Apply a bead of asphalt roof cement on the bottom of the vent. Cut a piece of drywall to make the ceiling hole the right size for your fan. Choosing a whole house fan.

It is because of this that many builders tend to advise against this method. Several different ways you can move that hot air to the outside. One in line centrifugal fan can be mounted in the attic to exhaust the moisture from two bathrooms. Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof.

The lower half of the flange sits on top of the shingles. From the roof find the nail and use the utility knife to cut roof shingles from around the nail. Each bathroom has its own exhaust fan. This involves running ductwork from the fan usually though an attic and out through the roof.

Each fan vents separately out the roof. Center the nail between two rafters. Draw a mark on the bathroom ceiling where you d like to install the vent fan. 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.

For optimum performance locate it between the shower and the toilet.