Bathroom Exhaust Fan Installation Attic

Ceiling mounted fans typically use ducts hidden in the walls ceiling or attic to reach a safe exit point on the roof or a wall.

Bathroom exhaust fan installation 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. Options for venting a bathroom exhaust fan include best to worst. If you have access to the attic the fan can vent either through a gable wall or roof. 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.

Through the roof or an exterior gable wall. Exhaust fans mounted on an exterior wall vent directly outside without any ductwork. Letting the fan exhaust into an open attic will cause moisture buildup on the underside of the roof. Use the reference hole as a landmark to transfer your measurements from the attic to the ceiling.

Mark the ceiling back in the bathroom measure the inside dimensions of the vent fan s intake port to determine what size hole you need. The warm air will exhaust out the duct and enter back into the attic through the soffit vent or ridge vent. Avoid venting through a soffit vent or ridge vent. Use a layout square or framing square to draw the.