Vent Bathroom Fan Through Wall Or Roof

The 2nd bathroom vent drips on the floor and is ruining the ceiling.

Vent bathroom fan through wall or roof.

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. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. A down through soffit exhaust vent design by leaving warm air in the exhaust duct when the fan is off creates a heat trap that reduces heat loss out of the bathroom through the exhaust fan duct when the fan is off in comparison with up routed vents or even horizontal vents through a gable end wall.

This involves running ductwork from the fan usually though an attic and out through the roof. The alternative to a roof exhaust if you re concerned about not being able to seal the hole in the roof is to exhaust through a gable end. Vent your bath and kitchen exhaust fans through the roof through a special roof hood. 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.

It eliminates the need for routing ductwork through the house and these fans usually dry the bathroom more quickly. A 3 or 4 inch duct connects to the outlet on the fan housing and runs to a side wall or to the roof and connects to a vent cap that allows the. 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.

Bathroom ventilation fan duct routing routing a bath vent duct down out or up through an attic or roof out. Going through the roof guarantees it will go up in the air and away from your home i would love to see a copy of the building code that suggests venting a bathroom fan through the soffit is recommended. 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. Either way the vent will have to go directly to the outside and installed with a vent hood cover.