View Full Version : Attaching new shower drain to old cast iron plumbing
 
 Davisco10
Sep 2, 2015, 01:20 PM
I am installing a shower/bathroom in my basement.  I have a cast iron drain pipe stub sticking out of the concrete floor. What is the best way to attach a new shower drain to this drain pipe.  I will ultimately be building a concrete shower pan for custom tile install.  Thank you.
 Milo Dolezal
Sep 2, 2015, 08:38 PM
You purchase cast iron shower drain head that slips directly over the cast iron pipe. Tighten up 3 stainless steel bolts and you are ready to go. See the attachment.
 
Hope that helps
 
Milo
 hkstroud
Sep 3, 2015, 04:21 AM
I have a cast iron drain pipe stub sticking out of the concrete floor.
Is this a shower drain or is it a floor drain.  Suspect it is just a floor drain unless this area was roughed in for a bath.
 Davisco10
Sep 3, 2015, 06:07 AM
Is this a shower drain or is it a floor drain.  Suspect it is just a floor drain unless this area was roughed in for a bath.
 
It is a shower drain already roughed in and leads over to the 4" waste pipe for the toilet.  There is also a floor drain a few feet away that the HVAC system is draining into.
 
 
You purchase cast iron shower drain head that slips directly over the cast iron pipe. Tighten up 3 stainless steel bolts and you are ready to go. See the attachment.
 
Hope that helps
 
Milo
 
Should I be busting out some of the concrete and cutting the pipe lower to get the head lower?  Or, since I am building up a mortar shower base... just build up around this drain?  Thanks.
 Milo Dolezal
Sep 3, 2015, 07:15 AM
For the Cast Iron shower drain head to fit in - and to have the flat part of the bottom of the shell to be at the same lever as the existing floor -  you would need about 2" a space around the pipe and about 2" deep. 
 
Yes, you could build it up with mortar, but that would bring your shower floor ( an the curb ) another (about ) 2" higher.
 
Hope that explains
 
Milo