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-   -   Basement Bathroom Vent Through Exterior Wall? (http://www.diychatroom.com/f7/basement-bathroom-vent-through-exterior-wall-169819/)

jjchronowski 01-22-2013 01:23 PM

Basement Bathroom Vent Through Exterior Wall?
 
Plumbing/code experts-

I am looking to redo the bathroom in my basement. Currently 3 drains exist (toilet, shower, and sink) and none are tied into a vent stack. They are close to the main 4" sewer line (within 5"), but the closest 3" stack is approx 15' away along the side of a different wall. I'd like to properly vent the 3 fixtures and was curious if I could tie the vents for those fixtures into one and punch it out the side of my exterior wall, above grade (similar to a sump pump discharge), and finish it off with a nice looking cover. Is this acceptable? Reason is that there is no space above this general area to run a new vent to the attic. It makes sense to me, just don't know if it's legal...

If it's not legal, then am I allowed an unlimited horizontal run of vent pipe to reach one of the existing stacks?

Thanks for the advice...

drtbk4ever 01-22-2013 01:42 PM

I don't know the answer but I would hazard a guess that no, you cannot run the vent out a wall. But that is just a guess. So let's wait for the experts.

I will be in a similar situation when we finish our basement so I'm curious to the correct code?

drtbk4ever 01-30-2013 10:46 AM

Does anybody have any input on this?????

Trucon01 01-30-2013 01:01 PM

Im an amateur and I've never seen vents through walls, just roofs. I've seen exhaust vents through walls, but not drain vents.

I'm going to say no, because the gas coming out of that pipe is flammable and could get into your windows and doors! Plus, you shouldn't put a cover on the vent. It needs to be open or it defeats the purpose.

drtbk4ever 01-30-2013 01:07 PM

Quote:

Originally Posted by Trucon01 (Post 1105724)
I'm going to say no, because the gas coming out of that pipe is flammable and could get into your windows and doors!

Thanks Trucon, I was just thinking the area around that vent would be pretty stinky.

So any plumbers have a comment before I run my basement toilet vent out the wall? :wink:

DannyT 01-30-2013 01:14 PM

anytime we were allowed by the inspectors to run a vent through a side wall it had to be extended above the edge of the roof.

md2lgyk 01-30-2013 02:24 PM

A lot of vents are run that way around here, where there are many old homes. But they still need to extend above the roof line. Another option is an AAV, if they are legal where you live.

drtbk4ever 01-30-2013 03:18 PM

Thanks Guys. Confirmed what I thought. Hopefully the original poster gets it correct.

joes plumbing 01-30-2013 04:54 PM

You can run a vent as far as it needs to go to tie in to vent stack as long as u pitch it the right way


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