Installing Roof Vent For Bathroom Exhaust Fan

Center the nail between two rafters.

Installing roof vent for bathroom exhaust fan.

Climb into the attic and clear away any insulation from around the hole. In this video this old house general contractor tom silva shows how to properly install a roof mounted bath fan vent. Draw a mark on the bathroom ceiling where you d like to install the vent fan. From the roof find the nail and use the utility knife to cut roof shingles from around the nail.

Choosing a whole house fan. 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. It is because of this that many builders tend to advise against this method.

If you have two bathrooms that are close together and one has an exhaust fan and the other doesn t you might be. Attach the drywall filler to a larger piece of wood set it in the hole and drive screws through the ceiling into the wood. Use an extra long 3 8 inch diameter spade bit to bore a reference hole through the ceiling and into the attic. The patched areas can be repaired with spackling later.

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. Each fan vents separately out the roof. 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. From inside the attic drive a nail through the roof directly above the bathroom vent fan.

The lower half of the flange sits on top of the shingles. Nail the lower corners with roofing nails and tar the heads. Each bathroom has its own exhaust fan. For optimum performance locate it between the shower and the toilet.

Slide the vent under the shingles so they cover the top half of the vent flange. Apply a bead of asphalt roof cement on the bottom of the vent. In order to accomplish this the roof has to have a hole cut in it. 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.