studio460
Member
Hi everyone!
I'm a do-it-yourselfer, but willing to hire a plumber. I just want to ensure it's done right. My main question is regarding the PVC drain connection to the 50-year-old 2" O.D. shower drain embedded in our "box-less" concrete slab (see photos below).
I'm guessing I have two options:
1. Jackhammer out a "box" around the existing drain to allow clearance to attach a Fernco no-hub coupling to the 2" cast iron drain in the slab, since the old cast iron reducer protrudes above the slab, by about one inch.
2. Leave the existing drain as is (with the protruding 3.5" cast iron reducer in place), and "build-up" the shower pan base, then connect the PVC drain to the 3.5" cast iron reducer using a Fernco no-hub coupling.
The problem with option two is, I don't know if that 50-year-old tar seal is good. Could I coat silicone (or other sealant) onto the existing interior of the cast iron reducer-to-cast iron drain connection? Isn't there some sort of sleeve-based solution for these types of installs?
Thanks in advance for any replies!
I'm a do-it-yourselfer, but willing to hire a plumber. I just want to ensure it's done right. My main question is regarding the PVC drain connection to the 50-year-old 2" O.D. shower drain embedded in our "box-less" concrete slab (see photos below).
I'm guessing I have two options:
1. Jackhammer out a "box" around the existing drain to allow clearance to attach a Fernco no-hub coupling to the 2" cast iron drain in the slab, since the old cast iron reducer protrudes above the slab, by about one inch.
2. Leave the existing drain as is (with the protruding 3.5" cast iron reducer in place), and "build-up" the shower pan base, then connect the PVC drain to the 3.5" cast iron reducer using a Fernco no-hub coupling.
The problem with option two is, I don't know if that 50-year-old tar seal is good. Could I coat silicone (or other sealant) onto the existing interior of the cast iron reducer-to-cast iron drain connection? Isn't there some sort of sleeve-based solution for these types of installs?
Thanks in advance for any replies!
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