To be properly terminated bathroom fans should exit the home through stem vents that are specifically used for this purpose.
Venting bathroom into roof space.
A venting a shower or bathroom extractor fan into the roof space is a crazy thing to do but surprisingly common.
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.
The master bathroom and the 2nd bathroom vent through the roof and through the same opening.
They have left it venting into the roof space see photo.
In all cases the ducting needs to conduct the exchaust to the building exterior and needs to terminate in an animal proof vent cover.
This article describes routing bath exhaust fan duct upwards through an attic or roof space or downwards through a floor or crawl space.
Reducing the effectiveness of the insulation.
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.
Venting moist air into an attic or crawl space can result in damp or wet insulation.
We have a bathroom with no external windows and an extractor fan that we just discovered vents straight upwards into the cold loft space.
While this may seem obvious homeowners may out of convenience direct the vent into either of these locations.
Bathroom vent exhausting into attic space.
Took the fan off and lo and behold no ducting.
These stem vents should be properly connected to the bathroom ducts to ensure that moisture is traveling to the exterior not the attic space.
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.
Until recently builders and plumbers might have got away with it as long as the.
My home is like betty s.
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.
Recently we had a loft extension including a bathroom.
Is it okay to vent a ceiling fan into the attic for just a toilet room.
It needs to vent to the building exterior.
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.
What is the irc code referencing this.
Children seniors and people with weaken immune systems or respiratory issues are usually more susceptible to mold issues than others.
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.
It cannot move air to a crawlspace or attic.
Bathroom ventilation fan duct routing routing a bath vent duct down out or up through an attic or roof out.
The 2nd bathroom vent drips on the floor and is ruining the ceiling.
