(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 15 of 19

Thread: Help With Adding A Vent

Hybrid View

  1. #1
    DIY Senior Member Briandl's Avatar
    Join Date
    Feb 2008
    Location
    Texas
    Posts
    116

    Default Help With Adding A Vent

    So I'm working on a bathroom that was finished to about 90% by the original contractor. I'm trying to finish things up but want to make sure I do things correctly.

    I always assumed the vent was connected, as I said they did 90% of the work, but as I was flushing the supply lines, I dumped the bucket of water into the tub and it would not drain. I figured it may have a little bit of debris because this bathroom has been sitting unfinished for almost eighteen years, but I began to think the vent wasn't connected and sure enough it wasn't.

    So I've posted a video, and I'll offer an explanation as to what you are seeing:



    The first thing is the drain line for the sink. The second is the drain line for the tub which has a p-trap. The third thing is the drain for the toilet, this main part is where the tub drain connects, and it also branches out on the other end, I always assumed it was for a cleanout, but apparently it was for the vent. You can also see the unfinished connection between the toilet/tub connection, and the sink. Lastly the video goes sideways and you can see the unfinished vent. The vent does tee off and connect to the sink above the ceiling.

    I just want to make sure I connect it correctly, I have a feeling it wouldn't be right to just bring it down the the concrete, elbow it and connect it to the line where the toilet is, but then again that might be the right way. If that is the right way would I put a cleanout instead of an elbow?

    I figured it was wrong because the toilet or tub could back up into the vent, but at the same time those drains need air behind them to work properly.

    I also did a paint mock up if that helps:

    Last edited by Briandl; 07-16-2010 at 01:38 PM.

  2. #2
    DIY Senior Member Briandl's Avatar
    Join Date
    Feb 2008
    Location
    Texas
    Posts
    116

    Default

    Okay so I was looking around and went through the "scrap" pieces of PVC that were left behind and I was thinking this may be what they had in mind:



    The first new piece is like a Y with a cleanout, the other new piece is an elbow with a reducer. Would that setup be good once all glued together with whatever pieces would be necessary to finish it off?

  3. #3
    Forum Admin, Expert Plumber Terry's Avatar
    Join Date
    Aug 2004
    Location
    Bothell, Washington
    Posts
    14,191
    Blog Entries
    1

    Default

    The picture below should have been a combo or wye with 45, not the Santee that I'm seeing here. Whenever you go from vertical to horizontal, it needs to be a wye fitting.
    If the tub is not draining, there may be a mechanical plug or test cap somewhere.

    Each fiixture should have a vented trap, it's a little hard for me to figure out what I'm seeing here.
    The lav would work for wet venting the tub or toilet if it's run in 2", and if it's laid out correctly, little hard for me to see that though.


  4. #4
    DIY Senior Member Briandl's Avatar
    Join Date
    Feb 2008
    Location
    Texas
    Posts
    116

    Default

    Quote Originally Posted by Terry View Post
    The picture below should have been a combo or wye with 45, not the Santee that I'm seeing here. Whenever you go from vertical to horizontal, it needs to be a wye fitting.

    So you're saying that the piece used at the bottom of the toilet drain should be one of these:


  5. #5
    Forum Admin, Expert Plumber Terry's Avatar
    Join Date
    Aug 2004
    Location
    Bothell, Washington
    Posts
    14,191
    Blog Entries
    1

    Default

    Here is one method wet venting the tub over the toilet.
    Attached Images Attached Images  

  6. #6
    DIY Senior Member Briandl's Avatar
    Join Date
    Feb 2008
    Location
    Texas
    Posts
    116

    Default

    Hmm, I'm not really sure what to do with that, or how I could apply that to my situation.

  7. #7
    In the Trades Wally Hays's Avatar
    Join Date
    Nov 2009
    Location
    New England
    Posts
    652

    Default

    They roughed it 18 years ago?

    It's real hard to tell from the pictures and diagram what is going on there but if the tub isn't draining it probably still has a cap or test plug somewhere. Vents won't cause that problem. No vent piping can run horizontal until it has risen to a point 6" above the flood level rim of the fixture served.
    Perception is 3/4 of reality

  8. #8
    DIY Senior Member Briandl's Avatar
    Join Date
    Feb 2008
    Location
    Texas
    Posts
    116

    Default

    Yeah there are receipts from 1992 so that's about eighteen years ago. It's still hard to tell what's going on between the two pictures and the video? I was really trying to make sure it was obvious what was going on.

  9. #9
    DIY Senior Member Briandl's Avatar
    Join Date
    Feb 2008
    Location
    Texas
    Posts
    116

    Default

    Hopefully this helps. You can't see the vent in the first picture because it's not connected as I mentioned. Also as I mentioned the vent on the sink connects in the attic space to the vent you cannot see.






Similar Threads

  1. Adding two lavatories to existing vent
    By prpsrv in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 4
    Last Post: 02-13-2009, 05:58 AM
  2. Need Help adding Vent...
    By thinkly in forum HVAC Heating & Cooling
    Replies: 7
    Last Post: 09-29-2008, 07:28 AM
  3. Adding Vent lines
    By SavannahPL in forum Remodel Forum & Blog
    Replies: 1
    Last Post: 05-18-2008, 07:03 AM
  4. Adding a fixture to a wet vent
    By JesseBrud in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 0
    Last Post: 01-22-2006, 05:46 AM
  5. Adding vent to kitchen sink
    By Uncle Lar in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 2
    Last Post: 06-30-2005, 05:31 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •