Stumped on hooking up shower pan to 4" cast-iron-in-concrete floor drain?
I ripped out the shower pan because water got under it and rotted some shims. This happened because the shower's 2" drain fitting was just loosely dumping the water into the 4" drain.
I need to hook a shower pan to what looks like just a 4" cast iron floor drain. There is no flange or bell. I considered a Fernco made for PVC which somewhat fits, but I don't think it will pass any kind of pressure test. It also seems like I might be able to lead-in a 2" cast iron pipe into the 4" pipe, but I still need to hook a 2" cast-iron to the drain somehow. I suppose I could also chisel concrete, but this seems further down the slippery slope..
Any ideas?
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