Tom-Kap over toilet rough-in?

ScAndal · Jan 10, 2011

OK I'm stumped as why anyone would do this.

Any ideas on 1.) how to validate that this is a toilet run? It is exactly where the toilet should be based on the blue prints of the house and the shower and sink are roughed in right between them. There is also a cleanout just down the line about 6 feet away.

2.) Best way to flange this thing?

Any help would be appreciated as I can't afford to bring in a plumber right now so I thought I'd see what I could do on my own.

ScAndal

Mr_David · Jan 10, 2011

Tom Kap is usually glued into 3" or 4" pipe.
You can try and peel out the threaded fitting part that is glued in.
If it is 4" ABS pipe then often the outside hub of a 3" closet flange will fit inside the 4" pipe.
I think my next how thread might be on how to peel a glued in ABS pipe from a fitting. They make a cool tool that is not very expensive that can drill out old pipe from a fitting but I don't think that this will work in this application.
Open / remove the plug and see if you can see if the pipe turns horizontal and if it reduces to 3". A closet bend typically reduces from 4" to 3"

It it is 4 " pipe you can also get a small jackhammer and chip out the concrete from around the pipe and glue a 4" hub flange on to it.

one more thing if you open it and there is a 90 look into it with a mirror. usually it will go toward a wall for a vent and then go down.

ScAndal · Jan 11, 2011

Mr_David,

What outstanding information. This is exactly what I was looking for.

Do they make a special tool to unscrew the Tom Kap?

-ScAndal

Mr_David · Jan 11, 2011

Yes but I just use a piece of 1/4" flat steel with an adjustable crest wrench

ScAndal · Jan 12, 2011

Sounds good. I will do the same. Is there anything I can use besides a jackhammer? For such a small amount of cement, I would think I could use some type a chisel instead?

Mr_David said:
Yes but I just use a piece of 1/4" flat steel with an adjustable crest wrench

Plbgbear · Jan 12, 2011

You could try renting a hammer drill like a Bosch Bulldog or something similar like it. I just did the very exact thing about two weeks ago where I had to replace a old flange and had to chip the concrete from around the pipe. I don't think the rental is very much