PVC vs Poly pipe around big trees

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by leak_chaser, Oct 27, 2013.

  1. leak_chaser

    leak_chaser New Member

    Messages:
    16
    Location:
    South Carolina
    Which will stand up better to big tree roots?

    Thanks.
  2. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    27,020
    Location:
    Cave Creek, Arizona
    Actually, maybe neither, because the biggest problem is usually the roots growing around the pipe and "choking" it. ANY plastic pipe can be squeezed closed by roots.
  3. Wrenched

    Wrenched In the Trades

    Messages:
    5
    Location:
    Vancouver, BC
    Big trees and plumbing generally tend to not get along.

    PVC piping has less give than Poly so will tend to crack slightly sooner.
  4. Wet_Boots

    Wet_Boots Sprinkler Guy

    Messages:
    798
    Location:
    Metro NYC
    If you really want to run a house supply past shallow tree roots, you would start at sch 40 PVC and work up from there. Poly pipe is not to be considered.

    To be really really conservative about it, you could even go with galvanized steel serving as a pull sleeve to encase plastic tubing.
  5. craigpump

    craigpump Active Member

    Messages:
    1,028
    Location:
    ct
    We sleeve poly all the time up here through 4" sch 40 PVC when we have a real rocky trench and under driveways. The stuff is damn near indestructible. Lay your 4" in the trench, glue it together, tape a golf ball to the nose of the poly & shove it in.

    All done.
  6. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    27,020
    Location:
    Cave Creek, Arizona
    quote; The stuff is damn near indestructible.

    Maybe, usually, but I had a friend who had a sewer of it and the trees squeezed the pipe closed.
  7. craigpump

    craigpump Active Member

    Messages:
    1,028
    Location:
    ct
    Really? A picture of that would make quite the conversation piece
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