Bathroom Fan Vent Through Attic

By the diy experts of the family handyman magazine.

Bathroom fan vent through attic.

The best way to do it is to give the bathroom exhaust fan its own direct vent to the outside of your home and not into the attic where it can mix with the air causing the issues mentioned above. It eliminates the need for routing ductwork through the house and these fans usually dry the bathroom more quickly. Bath vent fan installation building codes bath vent fan troubleshooting bath vent fan repair. 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.

There are wall mount exhaust fans as well as ceiling exhaust fans. 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. How to install a bathroom vent fan. Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot.

This article describes routing bath exhaust fan duct upwards through an attic or roof space or downwards through a floor or crawl space. Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof. The master bathroom and the 2nd bathroom vent through the roof and through the same opening. Vent your bath and kitchen exhaust fans through the roof through a special roof hood.

The 2nd bathroom vent drips on the floor and is ruining the ceiling. Bathroom ventilation fan duct routing routing a bath vent duct down out or up through an attic or roof out. Bathroom code does address the issue of moving odor and moisture laden air from the bathroom to the outside. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood.

All municipalities have different requirements but some do not draw a hard line on requiring exhaust fans. No you cannot vent the bathroom exhaust fan into the soffit vents. In all cases the ducting needs to conduct the exchaust to the building exterior and needs to terminate in an animal proof vent cover. The 2 pipes one a 4 master and the other a 3 2nd do not go through the ceiling but into a common box that goes through the roof.

But you can install one fan in your attic for both bathrooms and make your bathroom quieter too. We explain how to install bathroom exhaust fans or vents the vent ducting. Either way the vent will have to go directly to the outside and installed with a vent hood cover. Ceiling fans vent either into the attic or outside through the roof.

The vent hood will have a little flap that opens when air is blowing through the vent but at other times it will remain closed. Venting two bathroom exhaust fans through one roof duct won t work sorry to say. Surprisingly bathroom fans are not required by some building codes.