How To Vent A Bathroom Fan Through Attic

How do i properly vent a bathroom fan into an attic.

How to vent a bathroom fan through attic.

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. In this video this old house general contractor tom silva explains how to vent a bathroom fan. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof.

To determine which size fan to buy for your bath multiply the room s square footage by 1 1. Either way the vent will have to go directly to the outside and installed with a vent hood cover. The 2nd bathroom vent drips on the floor and is ruining the ceiling. This article describes routing bath exhaust fan duct upwards through an attic or roof space or downwards through a floor or crawl space.

No you cannot vent the bathroom exhaust fan into the soffit vents. It eliminates the need for routing ductwork through the house and these fans usually dry the bathroom more quickly. The master bathroom and the 2nd bathroom vent through the roof and through the same opening. 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.

Can you vent a bathroom exhaust fan into the soffit vents. Bathroom ventilation fan duct routing routing a bath vent duct down out or up through an attic or roof out. In all cases the ducting needs to conduct the exchaust to the building exterior and needs to terminate in an animal proof vent cover. Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot.

From outside use 4 inch hole saw to cut hole for wall cap. The bathroom here is below an accessible attic so tom ran the exhaust duct across the attic and out a gable end. Drive nail through house wall from attic. This will serve as a reference point for positioning the wall cap.

This involves running ductwork from the fan usually though an attic and out through the roof.