Help with my current project

Discussion in 'Plumbing Forum' started by LKent, Aug 14, 2019.

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  1. Aug 14, 2019 #1

    LKent

    LKent

    LKent

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    Good morning. Needed help with this re-plumbing project. I opened up walls and figured why not right? I want to keep the same bathroom layout. Vanity and tub/shower has 1.5in drain pipes. Toilet has 4in drain and main stack is 4in. The vanity and tub/shower are not individually vented. That's the basic situation. I do have pics and a video below.

    My question is, should I keep the same sizes? Should I switch anything like fittings? Should I rerun the pipes through the middle of joists? I will replace with ABS. I will also add a vent for the vanity and tie into the main stack. I will also do this for the kitchen sink as it wasn't vented also. Any suggestions will be appreciated. Thanks. PS I am sistering full length joists and reinforcing framing components before redoing to plumbing.



    20190717_184952.jpg 20190716_182608.jpg 20190716_182553.jpg 20190726_172800.jpg 20190713_083818.jpg
     
  2. Aug 15, 2019 #2

    bud16415

    bud16415

    bud16415

    Fixer Upper Staff Member Admin Moderator

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    Your job looks quite similar to my upstairs bathroom plumbing when I redid the whole house 5 years ago. I left all the old drain lines and replaced all the incoming lines in the whole house with PEX.


    I didn’t remove much of the old pipe that was buried in structure and just ran the PEX where it was easiest to get in and also easier to get at if it ever needed service.


    I just added in structure as you are doing where it looks like it could use it and did the bounce test on floors. Got rid of the old K&T wire.


    Your adding vents sounds like a good plan.


    Now is the time to add new electrical GFCI and all that and do insulation and level the new ceiling.


    Looks good so far.
     
  3. Aug 27, 2019 #3

    LKent

    LKent

    LKent

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    Thanks for the reply. I added 4 joists so far and ripped out the plywood. Slow but fun. Will post pics when I can decrease their sizes in a few days so others can see progress.
     
  4. Sep 16, 2019 #4

    Toadfish

    Toadfish

    Toadfish

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    I'd leave the existing plumbing as long as there are no issues. But I would replace the tub drain/trap and pop up assembly while it's accessible.
     

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