How To Vent An Exhaust Fan Through Existing Attic Vent

Hot air exhaust vents located at the peak of the roof allow hot air to escape.

How to vent an exhaust fan through existing attic vent.

Choosing a whole house fan. Bathroom ventilation fan duct routing routing a bath vent duct down out or up through an attic or roof out. In all cases the ducting needs to conduct the exchaust to the building exterior and needs to terminate in an animal proof vent cover. Slide the vent under the shingles so they cover the top half of the vent flange.

Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof. Use foil duct tape. Through the roof or an exterior gable wall. You should never exhaust the bathroom fan directly into the attic.

This involves running ductwork from the fan usually though an attic and out through the roof. In order to accomplish this the roof has to have a hole cut in it. Nail the lower corners with roofing nails and tar the heads. 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. By the diy experts of the family handyman magazine. This article describes routing bath exhaust fan duct upwards through an attic or roof space or downwards through a floor or crawl space. Unlike fabric duct tape it won t deteriorate over time.

Apply a bead of asphalt roof cement on the bottom of the vent. Options for venting a bathroom exhaust fan include best to worst. 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. Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside.

Venting two bathroom exhaust fans through one roof duct won t work sorry to say. 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. The lower half of the flange sits on top of the shingles.