Copper pipe through concrete foundation

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by tedf, Feb 8, 2011.

  1. tedf

    tedf New Member

    Joined:
    Nov 23, 2009
    Location:
    Seattle
    It is my understanding that a copper water supply line coming through a concrete foundation should not be in contact with the concrete. But what sort of sleeve or buffer should be used? I’ve seen black plumbing tape, closed-cell pipe insulation and spray foam sealant recommended. Is one of these the best choice - or something else?
     
  2. Basement_Lurker

    Basement_Lurker One who lurks

    Joined:
    Jun 21, 2007
    Occupation:
    I smash things and demand money.
    Location:
    Victoria, BC
    You need something rigid enough to stand up to the wet concrete. Your best/easiest bet is to wrap your risers in foam...they sell foam insulation tubes which would work well for this, or you could just cut pvc risers and shove them deep into the dirt to make your seal.
     
  3. Sponsor

    Sponsor Paid Advertisement

     
  4. hj

    hj Moderator & Master Plumber Staff Member

    Joined:
    Aug 31, 2004
    Occupation:
    Plumber
    Location:
    Cave Creek, Arizona
    Are you talking about the "foundation" or the "floor slab". They are two different situations and require different solutions, since a pipe through the foundation usually has to have provision to be sealed water tight.
     
  5. PlumbPowerHouse

    PlumbPowerHouse Plumber

    Joined:
    Dec 10, 2009
    Occupation:
    Plumber
    Location:
    South Carolina
    If going through the foundation, we have used pvc pipe to sleeve it. If coming through a slab, we have used foam and roof felt.
     
  6. hj

    hj Moderator & Master Plumber Staff Member

    Joined:
    Aug 31, 2004
    Occupation:
    Plumber
    Location:
    Cave Creek, Arizona
    Through the slab, we either use Armorflex insulation or the vinyl sleeving.
     
Similar Threads: Copper pipe
Forum Title Date
Plumbing Forum, Professional & DIY Advice Pressure testing copper pipes Saturday at 6:33 AM
Plumbing Forum, Professional & DIY Advice Copper pipe too short to attach a coupling and extension? Sep 10, 2016
Plumbing Forum, Professional & DIY Advice Compression sleeve damaged copper pipe Aug 27, 2016
Plumbing Forum, Professional & DIY Advice Extra long copper pipes Aug 19, 2016
Plumbing Forum, Professional & DIY Advice Green Buildup on Copper Pipes: Big issue or not? Aug 9, 2016

Share This Page