Installing Roof Vent For Bathroom Exhaust Fan

Cut a piece of drywall to make the ceiling hole the right size for your fan.

Installing roof vent for bathroom exhaust fan.

Nail the lower corners with roofing nails and tar the heads. The lower half of the flange sits on top of the shingles. Center the nail between two rafters. If the hole is too big you ll need to patch the ceiling.

Each fan vents separately out the roof. Slide the vent under the shingles so they cover the top half of the vent flange. The patched areas can be repaired with spackling later. For optimum performance locate it between the shower and the toilet.

Several different ways you can move that hot air to the outside. 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. Each bathroom has its own exhaust fan. From inside the attic drive a nail through the roof directly above the bathroom vent fan.

Apply a bead of asphalt roof cement on the bottom of the vent. One in line centrifugal fan can be mounted in the attic to exhaust the moisture from two bathrooms. Climb into the attic and clear away any insulation from around the hole. In order to accomplish this the roof has to have a hole cut in it.

Draw a mark on the bathroom ceiling where you d like to install the vent fan. If you have two bathrooms that are close together and one has an exhaust fan and the other doesn t you might be. It is because of this that many builders tend to advise against this method. Choosing a whole house fan.

Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof. 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. 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. In this video this old house general contractor tom silva shows how to properly install a roof mounted bath fan vent.

From the roof find the nail and use the utility knife to cut roof shingles from around the nail.