Double Lavatory Renovation - Grade My Plumber's Work!

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by jmpadil3, Feb 19, 2019.

  1. jmpadil3

    jmpadil3 New Member

    Joined:
    Dec 10, 2018
    Location:
    Phoenix
    Howdy all,

    I recently had a professional plumber provide rough-in installs for relocating a single lavatory to a double lavatory. I'm now bidding out some shower work and one plumber commented on the rough-ins and said that the sanitary tee on the lavatory stub-out is a code violation and would result in plumbing issues. Can anybody provide any feedback to that, or perhaps discuss what potential issues this could cause? Pictures below.
     

    Attached Files:

  2. Stuff

    Stuff Well-Known Member

    Joined:
    Mar 7, 2013
    Location:
    Pennsylvania
    I guess you are not going through permits and inspections?

    You've got more than plumbing violations. Cutting the studs out to put in an electrical box is a real treat.
     
  3. Sponsor

    Sponsor Paid Advertisement

     
  4. Terry

    Terry Administrator Staff Member

    Joined:
    Aug 17, 2004
    Occupation:
    Plumber
    Location:
    Bothell, Washington
    That's not even close to what I would have done. So he doesn't own a drill with bits? Sharkbites? You can use them, but why? What is he doing for venting? I hope you change out the tub valve while it is open. And when you do, no PEX to the tub spout.
     
  5. jmpadil3

    jmpadil3 New Member

    Joined:
    Dec 10, 2018
    Location:
    Phoenix
    The vent is directly behind the toilet. I'm certainly going to have another professional plumber replace the sharkbites and properly stub out all of the supply stops. Also going to have the tub & shower valves installed.

    To address the comment above - that is a non-LB wall (confirmed through a P.E.), so i'm not concerned about the cutting, notches, holes, etc., but I think will slip another king stud adjacent to those boxes now that you brought that to my attention.

    Should the sanitary line be re-piped? I'd like to know where the issues are (yes this is permitted and will be inspected).
     
  6. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    Replacing the sharkbites is not necessary, I don't think. They do indicate that the plumber was not doing a lot of PEX, because they are more expensive than the usual rings and clamps. I am not a plumber.

    I like those sharkbite caps on the stubouts.

    You do have considerable stuff that needs fixing.
     
  7. jmpadil3

    jmpadil3 New Member

    Joined:
    Dec 10, 2018
    Location:
    Phoenix

    Can you elaborate more on what needs to be fixed?
     
  8. kreemoweet

    kreemoweet In the Trades

    Joined:
    Sep 7, 2009
    Location:
    Seattle. WA
    Those "notches" in your brutalized wall framing grossly exceed what is allowed in even
    a non-bearing wall. Whether you are "concerned" or not, it is not fit even to support
    a load of drywall.

    There is no proper venting for either of the lavs.

    The PEX is not supported as required.

    I can't see how this could be passed by any competent inspector.
     
  9. plumber69

    plumber69 In the Trades

    Joined:
    Jun 20, 2014
    Location:
    Prince Rupert, British Columbia
    maybe his intentions were to aav each sink
     
  10. jmpadil3

    jmpadil3 New Member

    Joined:
    Dec 10, 2018
    Location:
    Phoenix
    So am I in a situation where plumbers are just going to disagree with the method here or is this legitimately an illegal install that could cause problems? I am not a plumber and I have hired professional plumbers to install this, and now I'm about to hire another to install this again. First I'm going to be re-framing most of that wall now to appease the stud-notching gods. I'd like to cut the sewer line, install my framing, and then have another plumber install a new line. Can somebody suggest what I need to see for the sewer line to be OK?
     
  11. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    Let me explain the problem that jumped out to everybody. When you have a p-trap, there should be a vent to let air enter to spoil a potential siphoning as you let water out of the lav at a high rate. The siphoning would empty the "water seal" from the trap, and let sewer gasses come up the drain.

    There is a way to admit the air under each lavatory instead of having the preferred actual vent. That is with an Air Admittance Valve (AAV), which is permitted most places. The downside is that those can fail, where a real vent is much less likely to fail. Plumber69 referred to the possibility of AAVs in #8.

    There are other flaws, but are less likely to actually cause a problem but indicate work by somebody who has not had to face inspections. The right lavatory drains through a sanitary tee on its side, as your plumber #2 pointed out. I think the problem is mainly that that fitting does not direct the flow to the right very well. This would not be expected from a real plumber or a good amateur.

    And there are the structural problems that were pointed out.

    nor am I.
     
    Last edited: Feb 21, 2019
  12. Stuff

    Stuff Well-Known Member

    Joined:
    Mar 7, 2013
    Location:
    Pennsylvania
    You were able to get a P.E. to examine the house structure. What you need now is a plumbing/building inspector.
     
Similar Threads: Double Lavatory
Forum Title Date
Plumbing Forum, Professional & DIY Advice Draining a lavatory into a double fixture fitting May 26, 2019
Plumbing Forum, Professional & DIY Advice Double lavatory drain offset Jan 26, 2018
Plumbing Forum, Professional & DIY Advice Double lavatory not vented, gurgling, not draining well Dec 7, 2014
Plumbing Forum, Professional & DIY Advice Any 2 in. x 2 in. x 1-1/4 in. x 1-1/4 in. Double Fixture Tee? Yesterday at 5:48 PM
Plumbing Forum, Professional & DIY Advice Horizontal Double Wye Tee Fitting Thursday at 7:13 AM

Share This Page