Tapping In To Main Sewer Line For Addition? - Plumbing - DIY Home Improvement | DIYChatroom

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing


Thread Tools Display Modes
Old 12-30-2012, 11:19 AM   #1
Join Date: Dec 2012
Posts: 93
Rewards Points: 99

tapping in to main sewer line for addition?

first lemme say this forum is great and a huge help as I sort out details of a planned addition to my house!

you guys were good enough to help with how to extend the heat, now I have a question on tapping in to the sewer line for the bath and laundry rooms I'm planning.

and apologies if I get some language and details not exactly right as I am definitely not a professional!

so first the house is old and there are two cast iron sewer lines -- one for the upstairs bath and one for the kitchen. the new addition will connect to the kitchen and essentially sit on top of where the kitchen sewer line is.

it exits the current stone foundation just below grade and slopes out to the street. I'm planning a crawlspace foundation so i can route the plumbing w/o the expense of a full basement. can i tap in to the current cast iron line for the new bath and laundry drains?

should I replace the cast iron under the addition (and back to the original foundation) with PVC and use a coupler to connect to the cast iron as it exits the new crawlspace and out to the street?

would rather not replace the line all the way out. thx again.


Last edited by oh'mike; 12-30-2012 at 12:16 PM. Reason: added spaces
yellowkid is offline   Reply With Quote
Old 12-30-2012, 12:21 PM   #2
DIY staff

Join Date: Sep 2009
Location: Kane county,Illinois
Posts: 25,728
Rewards Points: 7,174

You do not HAVE to change the old cast iron main drain under your new addition--

However---it would be foolish not to ---you will never find it easier to do
it's old--

You will have an excavator on site for the footings---

You need to unearth part of it anyway to tie in your new lines---


New members: Adding your location to your profile helps in many ways.--M--
oh'mike is offline   Reply With Quote

Thread Tools
Display Modes

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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Trap on main sewer line? mazzonetv Plumbing 3 12-03-2012 03:20 PM
Tapping into main water line racinpig Plumbing 3 07-31-2012 11:53 AM
Main sewer line roots adam1885282 Plumbing 2 02-12-2010 08:32 PM
Main Sewer Line repair Unregistered Plumbing 3 03-14-2005 07:10 AM
sewer main line repar Babar Plumbing 1 01-26-2004 06:39 AM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1