Installing Roof Vent For Bathroom Exhaust Fan

One in line centrifugal fan can be mounted in the attic to exhaust the moisture from two bathrooms.

Installing roof vent for bathroom exhaust fan.

Choosing a whole house fan. This involves running ductwork from the fan usually though an attic and out through the roof. 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. Cut a piece of drywall to make the ceiling hole the right size for your fan.

Nail the lower corners with roofing nails and tar the heads. In this video this old house general contractor tom silva shows how to properly install a roof mounted bath fan vent. Center the nail between two rafters. From the roof find the nail and use the utility knife to cut roof shingles from around the nail.

If you have two bathrooms that are close together and one has an exhaust fan and the other doesn t you might be. Each fan vents separately out the roof. Apply a bead of asphalt roof cement on the bottom of the vent. Climb into the attic and clear away any insulation from around the hole.

It is because of this that many builders tend to advise against this method. The lower half of the flange sits on top of the shingles. The patched areas can be repaired with spackling later. Several different ways you can move that hot air to the outside.

Draw a mark on the bathroom ceiling where you d like to install the vent fan. Each bathroom has its own exhaust fan. If the hole is too big you ll need to patch the ceiling. 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 order to accomplish this the roof has to have a hole cut in it. 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. 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.

Use an extra long 3 8 inch diameter spade bit to bore a reference hole through the ceiling and into the attic.