Venting Bathroom Into Roof Space

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 bathroom into roof space. Recently we had a loft extension including a bathroom. Took the fan off and lo and behold no ducting. This section notes that air exhausted from the bathroom must be sent outdoors not indoors to the same residence or indoors to any other dwelling unit. This article describes routing bath exhaust fan duct upwards through an attic or roof space or downwards through a floor or crawl space.

To be properly terminated bathroom fans should exit the home through stem vents that are specifically used for this purpose. 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. My home is like betty s. What is the irc code referencing this.

Until recently builders and plumbers might have got away with it as long as the. Bathroom ventilation fan duct routing routing a bath vent duct down out or up through an attic or roof out. A venting a shower or bathroom extractor fan into the roof space is a crazy thing to do but surprisingly common. They have left it venting into the roof space see photo.

It needs to vent to the building exterior. When we got into the attic i quickly noticed the smell moisture and what i could see as mold on the roof rafters above each bathroom. The master bathroom and the 2nd bathroom vent through the roof and through the same opening. After further inspection it was evident the current home owners vented their bathroom exhaust fans directly into the open attic space and not to the outside.

I understand this will be very bad for the wooden beams. I was thinking of using a straight pvc pipe to create a horizontal run leading towards the roof and then somehow terminating it at the eaves although i don t know how to do this properly. The 2nd bathroom vent drips on the floor and is ruining the ceiling. Now winter is here we ve noticed the ceiling extractor blows a cold gale in when the wind comes from the west so i decided to find the vent outlet.

While this may seem obvious homeowners may out of convenience direct the vent into either of these locations. Venting moist air into an attic or crawl space can result in damp or wet insulation. On 2020 02 19 by mod joe the exhaust vent duct should not terminate in an attic or roof space. Is it okay to vent a ceiling fan into the attic for just a toilet room.

Children seniors and people with weaken immune systems or respiratory issues are usually more susceptible to mold issues than others. These stem vents should be properly connected to the bathroom ducts to ensure that moisture is traveling to the exterior not the attic space. Bathroom vent exhausting into attic space. We have a bathroom with no external windows and an extractor fan that we just discovered vents straight upwards into the cold loft space.