Bathroom Vent Through Roof Or Wall

Bathroom ventilation fan duct routing routing a bath vent duct down out or up through an attic or roof out.

Bathroom vent through roof or wall.

The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. Bathroom is on an exterior wall. You can pass the vent through a wall instead of through the roof but it must still rise over the roof. It eliminates the need for routing ductwork through the house and these fans usually dry the bathroom more quickly.

Single story house w attic hip roof. 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 master bathroom and the 2nd bathroom vent through the roof and through the same opening. Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof.

The roof contractor recommends the soffit to minimize protrusio. Praticle and easier to do. 1 cut into the drain pipe you want to vent with a hacksaw. Amazon s choice for bathroom wall vent broan nutone 512m through the wall ventilation fan white square exhaust fan 6 0 sones 70 cfm 6 4 5 out of 5 stars 781.

You can also fit through the ceiling but make sure you bring the pipe outside so through the roof tiles or in some other way some people have connected to the vent pipe but i do not reccomend it. The 2nd bathroom vent drips on the floor and is ruining the ceiling. 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. Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot.

I am under the impression that venting a bathroom fan out of the wall or to an eave vent as opposed to through the roof will allow moisture to rise back into the eaves and then into the attic. Vent your bath and kitchen exhaust fans through the roof through a special roof hood. I have gotten mixed opinions on whether to vent the new fan through the roof or through the soffit eave. The 2018 irc contains the same language.

This article describes routing bath exhaust fan duct upwards through an attic or roof space or downwards through a floor or crawl space. Through the wall is always better. I am getting a new roof installed and tear off and likely a lot of plywood and am simultaneously getting a new bath vent fan.