Bathroom Vent Through Roof Or Wall

You can pass the vent through a wall instead of through the roof but it must still rise over the roof.

Bathroom vent through roof or wall.

Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof. The 2nd bathroom vent drips on the floor and is ruining the ceiling. I have gotten mixed opinions on whether to vent the new fan through the roof or through the soffit eave. Bathroom ventilation fan duct routing routing a bath vent duct down out or up through an attic or roof out.

Bathroom is on an exterior wall. 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. The 2018 irc contains the same language.

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. This involves running ductwork from the fan usually though an attic and out through the roof. Single story house w attic hip roof. It eliminates the need for routing ductwork through the house and these fans usually dry the bathroom more quickly.

Through the wall is always better. The roof contractor recommends the soffit to minimize protrusio. Vent your bath and kitchen exhaust fans through the roof through a special roof hood. Some veteran builders used to consider a soffit as an appropriate placement for the event outlet but section m1501 1 of the 2012 international residential code irc changed the language to disallow exhausting through a soffit vent or ridge vent or into an attic or crawl space leaving a side wall or roof as the only two options.

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. This article describes routing bath exhaust fan duct upwards through an attic or roof space or downwards through a floor or crawl space. 1 cut into the drain pipe you want to vent with a hacksaw. The master bathroom and the 2nd bathroom vent through the roof and through the same opening.

Do not leave the moisture going into the loft. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent 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.