Bathroom Exhaust To Attic

Ceiling fans vent either into the attic or outside through the roof.

Bathroom exhaust to attic.

This is much easier to do if you have attic access because if you don t you usually have to remove some ceiling drywall and run the ducts along a joist. If you have access to the attic the fan can vent either through a gable wall or roof. See bathroom vent duct termination for details about how to terminate the bath exhaust vent duct. Note that the bathroom vent fan must always exhaust to the outdoors.

Allowing the exhaust to vent into your attic can potentially cause several moisture problems. It s all outdoor air anyways right. Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. No you should not vent a bathroom fan directly into an attic.

There are wall mount exhaust fans as well as ceiling exhaust fans. Never allow the duct to simply blow into an attic crawlspace or other enclosed area. The exhaust needs to vent outdoors. Avoid venting through a soffit vent or ridge vent.

However you can vent a bathroom fan through an attic while it terminates on the roof or gable end. Today s homeowner serves cookies to analyze traffic and better serve you. Wall mount fans are mounted on an external wall of a home and are used if there isn t a way to vent through the roof as in the case of a bathroom on the first floor of a home. Exhaust air from toilet rooms and bathrooms shall not discharge into attic crawl space or other areas inside building.

Venting a bathroom exhaust fan into your attic is never a good idea here are three better options. If you re simply replacing the fan the ducts should already be set up for you. Vent your bath and kitchen exhaust fans through the roof through a special roof hood. Bathroom fan sound levels.

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. The building code requires a bathroom exhaust fan to vent outside the building so installation of a new bathroom fan necessarily involves installation of ductwork. No you cannot vent your bathroom exhaust fan into the attic.

Example model ventilation codes.