Gluing ABS pipe

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by daz49, Jan 29, 2009.

  1. daz49

    daz49 New Member

    Jan 29, 2009
    My question is about 3" ABS pipe
    l've roughed in my toilet 12" from the finished drywall. l now want to install tiles and therefore need another 5/8". l have yet to secure the toilet flange to the sub floor and therefore can pull the flange 5/8 from the wall which in turn is bending the 3" pipe and connections running from the flange to the main stack about 4' away. So my question is will this stress on the glued ABS joints over time loosen and start to leak?
  2. Gary Swart

    Gary Swart In the Trades

    Sep 1, 2004
    Yakima WA
    It is a very common misconception that ABS and PVC pipes are "glued" together. The process that joins them is very similar to welding steel. The process is done chemically and is called solvent welding. The so-called glue is actually a solvent that briefly melts the top surfaces of the pipe and fitting and allows the two surfaces to combine when the joint is assembled. Then the surfaces harden and the joint is complete. While ABS and PVC are different chemically and require their own solvents, the process is essentially the same. Your joints will be fine. The main thing is when assembling the pipes, don't move a joint for a minute or so after assembly so that the solvents can set without cracking.
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  4. Redwood

    Redwood Master Plumber

    Dec 15, 2007
    Service Plumber
    Stressing any connection increases the chances of cracking.
  5. nhmaster

    nhmaster Master Plumber

    Jul 30, 2008
    Tech. Instructor
    S. Maine
    This post sounds chillingly familiar :confused:
  6. Terry

    Terry Administrator Staff Member

    Aug 17, 2004
    Bothell, Washington
    Many toilets have 3/4" of space behind on a 12" rough.

    Which toilet are you using?
  7. daz49

    daz49 New Member

    Jan 29, 2009
    Toto aquia II
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