need help. Can drain pipes be in an outside wall?

Discussion in 'Canadian Plumbing Code Questions' started by qkl23, Nov 12, 2013.

  1. qkl23

    qkl23 New Member

    Messages:
    1
    Location:
    toronto
    who can tell me if it is allowed to install a drain pipe(stack or branch) within a outside wall? appreciate
  2. mikeplummer

    mikeplummer Plumber

    Messages:
    190
    Location:
    Ontario, Canada
    yes you can put either in an exterior wall... although its not good practice due to freezing temps and loss of r-value of the voided area created by pipe...and should be avoided whenever possible.
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