How To Vent An Exhaust Fan Through Existing Attic Vent

The lower half of the flange sits on top of the shingles.

How to vent an exhaust fan through existing attic vent. Slide the four metal brackets into the tabs protruding from the sides of the vent fan. Through the roof or an exterior gable wall. Nail the lower corners with roofing nails and tar the heads. Remove the knockout hole on the side of the fan s housing and attach a cable connector.

Venting two bathroom exhaust fans through one roof duct won t work sorry to say. You should never exhaust the bathroom fan directly into the attic. Unlike fabric duct tape it won t deteriorate over time. In all cases the ducting needs to conduct the exchaust to the building exterior and needs to terminate in an animal proof vent cover.

No you cannot vent your bathroom exhaust fan into the attic. Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside. Use foil duct tape. Slide the vent under the shingles so they cover the top half of the vent flange.

It is because of this that many builders tend to advise against this method. Hot air exhaust vents located at the peak of the roof allow hot air to escape. Options for venting a bathroom exhaust fan include best to worst. Taking advantage of this natural process referred to as passive ventilation is the most common way to vent an.

In order to accomplish this the roof has to have a hole cut in it. Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof. Bathroom ventilation fan duct routing routing a bath vent duct down out or up through an attic or roof out. But you can install one fan in your attic for both bathrooms and make your bathroom quieter too.

Set the vent fan down into place between the joists centered on the ceiling hole. This article describes routing bath exhaust fan duct upwards through an attic or roof space or downwards through a floor or crawl space. By the diy experts of the family handyman magazine. Apply a bead of asphalt roof cement on the bottom of the vent.