1. sjh

    sjh New Member

    Joined:
    Nov 12, 2007
    Location:
    California
    Second pin hole leak in galvanized water pipe in (4) months. House is (64) years old with (1) bathroom. When re-piping with PEX should it be main line and branch like the existing galvanized or should it be installed with a manifold and "home runs" to each fixture?
     
  2. CountryBumkin

    CountryBumkin Active Member

    Joined:
    Sep 4, 2009
    Location:
    Orlando, FL
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  4. hj

    hj Moderator & Master Plumber Staff Member

    Joined:
    Aug 31, 2004
    Occupation:
    Plumber
    Location:
    Cave Creek, Arizona
    You can do it whichever way is easiest in your situation.
     
  5. brb

    brb New Member

    Joined:
    Dec 23, 2016
    Location:
    Minnesota
    I am remodeling a second floor bathroom and did sub manifolds for that bath only. It has worked out really well for me. Like everyone else recommended, whatever works best for you is the answer!
     
  6. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Joined:
    Sep 2, 2004
    Occupation:
    Retired Systems engineer for defense industry.
    Location:
    New England
    Just keep in mind that the ID of pex is smaller than the similarly sized copper (or galvanized, at least when it was new!). Because it can be installed with fewer fittings, those don't restrict flow as lots of them in rigid pipe unless you insist on making it look really neat with square corners and lots of fittings!
     
  7. sjh

    sjh New Member

    Joined:
    Nov 12, 2007
    Location:
    California
    Got estimates and I think I am going to go with type L copper for the job. More $, but I am more comfortable going with the tried and true standard. Aluminum house wiring also sounded like a good idea at one time.
     
  8. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Joined:
    Sep 2, 2004
    Occupation:
    Retired Systems engineer for defense industry.
    Location:
    New England
    FWIW, pex is not a new item...been around for decades, but was first used more extensively in Europe. It has its advantages and disadvantages, just like many things. Like anything, though, it requires proper installation and design to work well.
     

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