How To Vent An Exhaust Fan Through Existing Attic Vent

Slide the vent under the shingles so they cover the top half of the vent flange.

How to vent an exhaust fan through existing attic vent.

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. Slide the four metal brackets into the tabs protruding from the sides of the vent fan. Set the vent fan down into place between the joists centered on the ceiling hole.

But you can install one fan in your attic for both bathrooms and make your bathroom quieter too. Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof. Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside. Options for venting a bathroom exhaust fan include best to worst.

Through the roof or an exterior gable wall. In all cases the ducting needs to conduct the exchaust to the building exterior and needs to terminate in an animal proof vent cover. The lower half of the flange sits on top of the shingles. You should never exhaust the bathroom fan directly into the attic.

By the diy experts of the family handyman magazine. Venting two bathroom exhaust fans through one roof duct won t work sorry to say. Hot air exhaust vents located at the peak of the roof allow hot air to escape. This article describes routing bath exhaust fan duct upwards through an attic or roof space or downwards through a floor or crawl space.

When venting a bathroom exhaust fan make sure to vent the air to the outside rather than into your attic where it can cause mold and mildew to form. Choosing a whole house fan. Taking advantage of this natural process referred to as passive ventilation is the most common way to vent an. Remove the knockout hole on the side of the fan s housing and attach a cable connector.

Nail the lower corners with roofing nails and tar the heads. Use foil duct tape. Bathroom ventilation fan duct routing routing a bath vent duct down out or up through an attic or roof out. No you cannot vent your bathroom exhaust fan into the attic.