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.

Installing roof vent for bathroom exhaust fan.

Nail the lower corners with roofing nails and tar the heads. For optimum performance locate it between the shower and the toilet. Attach the drywall filler to a larger piece of wood set it in the hole and drive screws through the ceiling into the wood. Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof.

Apply a bead of asphalt roof cement on the bottom of the vent. From inside the attic drive a nail through the roof directly above the bathroom vent fan. The patched areas can be repaired with spackling later. 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. 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. If you have two bathrooms that are close together and one has an exhaust fan and the other doesn t you might be. This involves running ductwork from the fan usually though an attic and out through the roof.

Choosing a whole house fan. If the hole is too big you ll need to patch the ceiling. 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.

Each bathroom has its own exhaust fan. The lower half of the flange sits on top of the shingles. Slide the vent under the shingles so they cover the top half of the vent flange. In this video this old house general contractor tom silva shows how to properly install a roof mounted bath fan vent.

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 order to accomplish this the roof has to have a hole cut in it. Several different ways you can move that hot air to the outside. Cut a piece of drywall to make the ceiling hole the right size for your fan.

Each fan vents separately out the roof.