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Thread: shower drain & p trap code question

  1. #1
    DIY Member nc8861's Avatar
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    Default shower drain & p trap code question

    Watching some TLC tonight on some home improvement show and this guy says that according to code, compression fittings on a shower p trap can't be used in an area where you can't get to - the example on the show was a second floor bathroom between floor joists. Is this true? Does everything have to be glue joints?

    I'm in a 30 yr old house, 2nd floor bathroom - only access from 1st floor would be through the kitchen ceiling.

  2. #2
    Plumber jimbo's Avatar
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    Default

    Compression fittings on tub drains have been around since long before glues pipe. I have heard that some local codes don't allow them, but in general I think you can still use them.

  3. #3
    Moderator & Master Plumber hj's Avatar
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    Default joints

    Usually the prohibition is about what kind of compression joints you use.

  4. #4
    DIY Member nc8861's Avatar
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    It looks like this one - I'm assuming the twisty part is the compression fitting. Am I wrong?

    http://www.idealtruevalue.com/servlet/the-14885/Detail

  5. #5
    Moderator & Master Plumber hj's Avatar
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    Default trap

    The compression part is the inlet. The large nut is a ground joint. But regardless, I would NEVER use that trap in a concealed location. I have seen too many of them with snapped locknuts at the ground joint.

  6. #6
    DIY Member nc8861's Avatar
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    That's enough evidence for me - I'll take it back. Thanks for your help.

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