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Thread: Question about shower copper piping route

  1. #1
    DIY Junior Member lucgallant's Avatar
    Join Date
    Jan 2011
    Fort McMurray, Alberta

    Question Question about shower copper piping route

    Hi there,

    I am supply piping to the shower faucet and I had a question about if a route is acceptable. I have drawn two routes, one is in blue, and it would go through the back wall of the shower, and then around the corner to the faucet. The other, in red, goes between the ceiling drywall and the HVAC ducting, and then I would etch out 3/4" of the face of the top wall plate in order to have the piping recessed there, and then put a protective plate over top. Between the ceiling drywall and the duct there will be approximately 3/4", just enough for the 1/2" pipe.

    Is the red route acceptable or would that be considered poor workmanship? The blue route would need a lot of 45/90s and I'm concerned it might restrict the flow...

    I'd love to know what an experienced plumber would do. Thanks!

  2. #2
    Consultant cwhyu2's Avatar
    Join Date
    Aug 2007
    Cincinnati OH


    I would go the blue route more fittings and more drilling.
    But save you in the long run.

  3. #3
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    New England


    You don't want the copper pipe in contact with the duct, so keep that in mind when doing the rough-in.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  4. #4
    Moderator & Master Plumber hj's Avatar
    Join Date
    Aug 2004
    Cave Creek, Arizona


    If you can do the red route without touching the ductwork, that is the way I would go.

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