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

    Nov 12, 2013
    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

    Mar 28, 2012
    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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