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  1. #1
    Join Date
    Jun 2012
    Posts
    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
    7,760

    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
    1,901

    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
    7,760

    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
    1,257

    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 11:50 AM.

  7. #7
    Join Date
    Jul 2010
    Location
    SoCal
    Posts
    7,760

    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
    Jun 2012
    Posts
    2

    Default Re: Wrong cement on PVC ABS joint

    I tried two tests, one glueing a PVC pipe and ABS coupler with the PVC primer and cement, and another with the multipurpose cement with the intention of trying to get them apart and experiment. After 24 hours, both were stuck together tight. I then tried the Dremel tool idea and it worked pretty good, but I had to cut small sections and peal them out. They came out hard on both glue ups. The ABS pipe was smoother inside after removal with the PVC glue but still seemed pretty securely attached. I think I will play some calming music and cut it out with the Dremel tool. It would require spoiling the new floor covering and floor sheathing, or tearing up the new Sheetrock to replace the fittings. Bet I don't make this mistake again!

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