Bathroom Exhaust Fan Venting Attic

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.

Bathroom exhaust fan venting attic.

There are wall mount exhaust fans as well as ceiling exhaust fans. First you ll partially block your roof vent with the piping reducing the flow of cooling air through your 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 correct way to vent a bathroom fan through an attic is to terminate the vent either to the roof or to the gable wall.

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. Second during cold winters you ll be blowing warm moist air onto a cold surface the roof vent and roof plywood. No you cannot vent your bathroom exhaust fan into the attic. Bath vent fan installation building codes bath vent fan troubleshooting bath vent fan repair.

This article series explains why bathroom vent fans are needed and describes good bath vent fan choices necessary fan capacity and good bath vent fan and vent duct installation details. Ceiling fans vent either into the attic or outside through the roof. Bathroom exhaust fans perform an important function by removing excess moisture from your home. Bathroom fan sound levels.

Either way the vent will have to go directly to the outside and installed with a vent hood cover. If you re tempted to vent your exhaust fan through an existing roof vent or even vent it into the attic don t do it.