Concrete slab poured tight to toilet rough-in

[Anthony Curtas]

Hi all,
I'm doing a basement remodel with a half bath. The drain and vent were roughed in already when the house was built, but they poured the concrete slab tight to the 3" ABS pipe for the toilet.

I chiseled the mounded concrete around it flush and level hoping for a sleeve or void, but nothing. So now I'm weighing my options.

1. Use a spigot toilet flange instead
2. Chisel away around the pipe and pray I don't damage it in the process (or hammer drill a hundred holes around it, same worries).
3. Some other fancy plumbing product I don't know about???

We have a Toto Dartmouth going there, if that matters.

Thanks,
Anthony

 

[wwhitney]

How about a picture?

Cheers, Wayne

 

[Sponsor]

 

[Anthony Curtas]

See attached. They painted the basement floor that pink color and went right over the pipe and cap. But it's 3" ABS, I'm sure of that.

 

[All Fug Duck]

They make a flange that slides inside of 3-inch pipe or just chisel it out maybe. you'll need to flush cut or just under the slab a little if it's not a flush fit flange.

 

[Reach4]

Inside is OK. You may have to taper the top of the pipe to clear a bevel on the closet flange. Be sure before you glue in a flange.

A rounded wood rasp would be the tool I would start with to make clearance.

For a glue in flange, I would want a stainless steel ring. You could use a 3-inch Pushtite (888-GPM Sioux Chief) , which has a plastic ring, since you could replace that if the ring failed. When you glue, it is hard to redo. Same thinking applies to 43654-OATEY Oatey twist n set -- it is removable.

 

[Anthony Curtas]

Thanks all. At this point the push in might be my best bet. One screwup and I'm jackhammering a slab on an almost completed reno. The stub out is almost exactly my floor height, maybe a little sanding to get it flush.

Anyone have a preference for the Pushtite (Sioux Chief) versus the Twist n Set (Oatey)?