How To Vent An Exhaust Fan Through Existing Attic Vent

Through the roof or an exterior gable wall.

How to vent an exhaust fan through existing attic vent.

This involves running ductwork from the fan usually though an attic and out through the roof. By the diy experts of the family handyman magazine. 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. Remove the knockout hole on the side of the fan s housing and attach a cable connector.

It is because of this that many builders tend to advise against this method. 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. Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside.

Slide the four metal brackets into the tabs protruding from the sides of the vent fan. Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof. Use foil duct tape. Options for venting a bathroom exhaust fan include best to worst.

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. But you can install one fan in your attic for both bathrooms and make your bathroom quieter too. Choosing a whole house fan.

Set the vent fan down into place between the joists centered on the ceiling hole. 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. Unlike fabric duct tape it won t deteriorate over time.

Hot air exhaust vents located at the peak of the roof allow hot air to escape. The lower half of the flange sits on top of the shingles. Taking advantage of this natural process referred to as passive ventilation is the most common way to vent an. No you cannot vent your bathroom exhaust fan into the attic.