Toilet Waste Pipe Coupling

[AlBundy]

I used flange off tool to get the flange off a toilet pipe. When I went to install the new flange I was having issues getting it all the way down flush with the tile (within 1/4 in) and figured it would get the rest of the way once I got the primer/glue on. Not the case. I wouldn't of tried this if I didn't have access to the pipes in the crawl space and there was a notch on the pipe that I thought it needed to be changed anyways. So now I have to cut it out from below.

Question - Where is the best place to join my new pipe into with a coupling? Straight vertical down from the flange is about a 2 ft straight section before the p-trap. Can I cut 6 inch below the subfloor and insert the coupling there with the new 6-in pipe going up through the subfloor for the new flange?

Is there an optimal place for the coupling or does it not really matter as long as I can get one in....?

 

[Reach4]

If you have access from the basement or crawlspace, the place you describe sounds ideal.

You could use a shielded coupler rather than glue, and that gives some re-do possibilities.

 

[Sponsor]

 

[AlBundy]

If you have access from the basement or crawlspace, the place you describe sounds ideal.

You could use a shielded coupler rather than glue, and that gives some re-do possibilities.

Thanks Reach. Should I be concerned with small gaps on the joins with getting waste caught in there with either method since I most likely will not be having a perfectly straight cut on the vertical pipe. Planning on going in there with sawzall and keeping it flush against the pipe but I imagine it wont be perfect.

 

[Reach4]

No, don't worry about the small gaps between coupled sections on your 3-inch pipe.

For your cut, maybe the metal shield could be used as a temporary guide.

 

[AlBundy]

No, don't worry about the small gaps between coupled sections on your 3-inch pipe.

For your cut, maybe the metal shield could be used as a temporary guide.

Many thanks appreciate your input!

 

[wwhitney]

I used flange off tool to get the flange off a toilet pipe. . . . Straight vertical down from the flange is about a 2 ft straight section before the p-trap.

Can you clarify the above details? There should be no external p-trap on a toilet installation, that trap is internal to the toilet.

Cheers, Wayne

 

[AlBundy]

Can you clarify the above details? There should be no external p-trap on a toilet installation, that trap is internal to the toilet.

Cheers, Wayne

Will take some pictures when I get home tonight. Now that I am thinking about it does seem odd that there would be one there. But if my memory is working there is a second trap under the toilet immediately after a 2-ft vertical 3 in pipe before it runs horizontal into the main waste line.

 

[John Gayewski]

Will take some pictures when I get home tonight. Now that I am thinking about it does seem odd that there would be one there. But if my memory is working there is a second trap under the toilet immediately after a 2-ft vertical 3 in pipe before it runs horizontal into the main waste line.

This should not be at all.

 

[AlBundy]

My mistake everyone. Thanks for your attention to details in my post too. There was not a p-trap after the toilet trap like I had thought it was a curved 90-degree that for some reason I saw as another p-trap. It is dark in my defense and this time I had a flash light. At any rate, cut the vertical pipe about 6 inches and installed the coupling. Toilet flange is on (with metal edging sitting on top of tile)!

Really appreciate the astute attention to detail and input above!