Pipes in exterior walls


Old 04-22-05, 02:52 PM
Visiting Guest
Posts: n/a
Pipes in exterior walls

I am removing a wall and need to move a drain pipe and two supply lines. I would like to move them to the exterior wall, it is a 2x4 wall...a) can i do this? b) if so what precautions do i need to take?
Sponsored Links
Old 04-22-05, 07:55 PM
majakdragon's Avatar
Join Date: Jul 2003
Location: N.E. Arkansas
Posts: 7,813
Received 0 Votes on 0 Posts
russell3068, Welcome to the DIY Forums.
Anything is possible but you need to check with your local code office to see what you need in your area. The drain will need a vent attached. Supply lines are no problem. Most code offices have no problem letting you know what is legal. Good luck with your project..
Old 04-22-05, 08:10 PM
Join Date: Sep 2000
Location: Tujunga, CA, USA
Posts: 209
Received 0 Votes on 0 Posts
Some areas frown on water pipes run in exterior walls because of freezing. You don't give much information. Like majakdragon said, anything is possible. But, some things aren't practical.
Old 04-23-05, 03:27 AM
Visiting Guest
Posts: n/a
more info on exterior wall pipes

I talked with the building code office for our town this morning and they said putting pipes in the exterior walls is fine. I live in Chicago Area and am worried about freezing. The house is a two-story and pipes i want to move is where it runs through the first floor to a second floor bathroom. They are currently vented so I expected to reconnect that on the drain pipe. Do I need to consider insulating the supply lines?
Old 04-23-05, 03:47 AM
Ed Imeduc's Avatar
Join Date: Aug 2002
Location: Mountain Williams Missouri
Posts: 18,386
Received 0 Votes on 0 Posts

Do I need to consider insulating the supply lines?
That is a for sure yes "very very good". Will code let you put a heater tape on them in the wall there ? if so I would.

Old 04-25-05, 04:15 AM
Join Date: Jan 2002
Location: Chicago
Posts: 1,915
Received 0 Votes on 0 Posts
I wouldn't recommend putting pipes in a 2X4 exterior wall in Chicago... unless you want to redoit every year.

As far as I know (I'm not a plumber) you can't put heat tape inside a wall in Chicago. It has to be exposed.
Old 04-28-05, 05:32 AM
Join Date: Feb 2003
Posts: 150
Received 0 Votes on 0 Posts
Beyond insulating the pipe well you could consider either thicker walled copper pipe (L or even K) for resistance to rupture or PEX lines that would expand but not fracture. PEX may or may not be acceptable under your code regime.
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Ask a Question
Question Title:
Your question will be posted in: