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Thread: Gluing ABS pipe

  1. #1

    Default Gluing ABS pipe

    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. #2
    In the Trades Gary Swart's Avatar
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    Default

    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.

  3. #3
    Master Plumber Redwood's Avatar
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    Stressing any connection increases the chances of cracking.

  4. #4
    Master Plumber nhmaster's Avatar
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    Default

    This post sounds chillingly familiar

  5. #5
    Forum Admin, Expert Plumber Terry's Avatar
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    Many toilets have 3/4" of space behind on a 12" rough.

    Which toilet are you using?

  6. #6

    Default

    Toto aquia II

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