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  1. #1
    Join Date
    Jun 2012
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    2

    Default Wrong cement on PVC ABS joint

    Nope, don't ask how this happened, but I applied PVC primer and then PVC cement to a PVC toilet flange going into a black ABS pipe in my new upstairs bathroom remodel job. Yes I had a can of multiuse cement in the shop! Since it is directly above a new Sheetrock ceiling I am concerned about leaks. Does anyone have experience with a situation like this? Any way to get the joint apart or cut the PVC pipe out and try again?

    Thanks,

  2. #2
    Join Date
    Jul 2010
    Location
    SoCal
    Posts
    6,598

    Default Re: Wrong cement on PVC ABS joint

    Well, s--t happens. Cut the ABS below the mess and re-do it, using all new parts. Check the label on your multiuse cement, it must say: for ABS, PVC and CPVC. I hope you still have an easy access from below.

    Just a note: make sure the flange is high enough to be flush with whatever finished floor you will install in the bathroom. Good luck.

  3. #3
    Join Date
    May 2008
    Location
    Pacific Northwet
    Posts
    1,627

    Default Re: Wrong cement on PVC ABS joint

    A "ram bit" can be used to drill the plastic pipe out of a fitting.
    The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.

  4. #4
    Join Date
    Jun 2007
    Location
    East Georgia
    Posts
    76

    Default Re: Wrong cement on PVC ABS joint

    I did the same thing several years ago. Since my house is on a high crawl space I went underneath and cut the mess out and redid it. My wife helped from above and no problem.

  5. #5
    Join Date
    Jul 2010
    Location
    SoCal
    Posts
    6,598

    Default Re: Wrong cement on PVC ABS joint

    Quote Originally Posted by Fencepost View Post
    A "ram bit" can be used to drill the plastic pipe out of a fitting.
    Ram bits are excellent, when there is no other alternative, as last resort. For the not so skilled, it might be a little too pricey, and also something that he will never use again.

  6. #6
    Join Date
    Feb 2010
    Location
    South*East
    Posts
    1,213

    Default Re: Wrong cement on PVC ABS joint

    Ram Bits aren't that expensive. He could spend more on fittings then the cost of the bit.

    http://www.buycheapr.com/us/result.j...=pasco+ram+bit

    john
    Last edited by johnjh2o; 06-23-2012 at 10:50 AM.

  7. #7
    Join Date
    Jul 2010
    Location
    SoCal
    Posts
    6,598

    Default Re: Wrong cement on PVC ABS joint

    Replacement parts:

    1 - 3" coupling
    1 - 3" toilet flange

    Total: less than $10 plus tax (retail)


    A new 3" ram:

    From $43 to over $52, plus shipping and plus tax to many states.


    Damage caused by an unskilled homeowner, plus the cost of calling a plumber after that: priceless (the sky is the limit).

    Just comparing.

  8. #8
    Join Date
    Feb 2010
    Location
    South*East
    Posts
    1,213

    Default Re: Wrong cement on PVC ABS joint

    Your overlooking the fact that to cut the line and replace the pipe and fittings he would have to open the ceiling on the first. And being that the piping is between the floor joists, chances are he doesn't have enough room to get a coupling between the ell and the flange.

    John

  9. #9
    Join Date
    Jan 2008
    Posts
    2,118

    Default Re: Wrong cement on PVC ABS joint

    So long as a coupler can be installed, redoing the connection is easy- even for the average "Joe Homeowner". Instead of a specialty tool, use a dremel-type tool to cut the pipe from the inside. Cheap ones lack power but will work with some patience. Even with the new plumbing parts added on this is still under $50. One thing I would try first is to see if I could twist the connection apart without breaking anything downstream. If the glue connection is truly bad it might just pop apart, making the repair easy. If you're careful and bold you might be able to make a couple cuts parallel to the pipe on a fitting then split the fitting off. Just be absolutely sure to not nick the pipe underneath enough to cause a future leak.

    Phil

  10. #10
    Join Date
    Feb 2010
    Location
    South*East
    Posts
    1,213

    Default Re: Wrong cement on PVC ABS joint

    The line is between floors and there is not enough room for a coupling between the fitting under the floor and the flange.

    John

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