Bathroom Duct To Attic Vent

Otherwise you re inviting a moisture mold rot insect problem in the building.

Bathroom duct to attic vent.

Start in the attic and drill a hole through the roof in the desired vent location. Now where the discharge point is is going to be up to you. The exhaust vent must terminate outdoors. Through the roof or an exterior gable wall.

Each fan vents separately out the roof. Each bathroom has its own exhaust fan. This article series explains how to install bathroom exhaust fans or vents the vent ducting the vent termination at the wall soffit or roof vent fan wiring bath vent duct insulation bath vent lengths clearances routing and we answer just about any other bathroom ventilation design or installation question you may have. Try to keep it close to the fan location.

Mount the fan high on the wall to better capture warm moist air. Options for venting a bathroom exhaust fan include best to worst. Ask your hvac contractor about fabricating a duct run that extends from a fan mounted in a bathroom wall down through the floor and between floor joists out to an exterior wall. Do not simply terminate a bath vent fan duct in an attic as shown in our photo above nor can you just dump the exhaust vent into a crawl space nor into a closed wall floor or ceiling cavity.

Fabricate the duct run from rigid metal or pvc material. Both bathrooms are vented by a single in line fan that has one exhaust vent running through the roof. Leave the drill bit sticking through the roof so you can find the hole. One in line centrifugal fan can be mounted in the attic to exhaust the moisture from two bathrooms.

From up on the roof use a jigsaw or reciprocating saw to cut a 4 in. So what you want to do is you want to install a duct a vent duct and you can use flex duct for this. The bathroom exhaust ventilation fan disperses air through an opening in the fan housing which is usually 3 inches in diameter and ideally faces in the direction of the ventilation system outlet. A lot of options.