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Old 12-16-2017, 08:40 PM   #1
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Concealed rough in for toilet - help!


I bought a tract house that was built in 1982. They were part of a low-income project and all had to comply with certain specs. They had to be three bedroom, one bath, single car attached garage and about 1000 to 1100 sq. ft. Many of these had a half bath that was roughed in but was finished as a closet.

So, I bought one of these that was a fixer upper and am working on the half bath/closet to convert it to the half bath. I removed some of the drywall and found the rough in supply lines. In the floor, which is a slab there was what appeared to be a red plastic coffee can lid. I chiseled the concrete away from it expecting to find a toilet flange. Instead there is a cast iron pipe about 2 ID and 3 OD. It has about 1 of clearance around it.

I am guessing that a toilet flange was made that went over the outside and oakum was driven in and lead poured over it.

I have never seen anything like this and am stumped. I would like a toilet flange that I can set a toilet on. I am hoping someone is familiar with this, what do I do? Thanks.
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Old 12-16-2017, 10:27 PM   #2
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Re: Concealed rough in for toilet - help!


Here is Richard from this old house demonstrating what you need.

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Old 12-17-2017, 07:15 AM   #3
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Re: Concealed rough in for toilet - help!


I just finished the video. After Richard removed the old flange the pipe sticking up looks just like the situation that I am faced with except I think his pipe may be larger than mine. I think the fitting with the red flange that goes over the outside would work for me. I'm afraid anything on the inside of mine would restrict or clog the passage of solids.

Now I just need to locate a source for one of those flanges. Thanks for the help Joed.
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Old 12-17-2017, 08:00 AM   #4
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Re: Concealed rough in for toilet - help!


Quote:
Originally Posted by comfun1 View Post
I just finished the video. After Richard removed the old flange the pipe sticking up looks just like the situation that I am faced with except I think his pipe may be larger than mine. I think the fitting with the red flange that goes over the outside would work for me. I'm afraid anything on the inside of mine would restrict or clog the passage of solids.

Now I just need to locate a source for one of those flanges. Thanks for the help Joed.
Are you looking for this?

https://www.homedepot.com/p/Sioux-Ch...6-GP/202313119



This is the other one in the video

https://www.homedepot.com/p/Oatey-4-...-100139480-_-N


Last edited by R2D2; 12-17-2017 at 08:03 AM.
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Old 12-17-2017, 08:59 AM   #5
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Re: Concealed rough in for toilet - help!


The inside flanges are designed for toilets. The hole is made large enough for the stuff.
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Old 12-17-2017, 09:43 AM   #6
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Re: Concealed rough in for toilet - help!


These flange pics r 4"
the piping measured is 3" nominal
A 3" Inside CF is not code - too restrictive
doesn't mean it isn't made just not legal to install
if big box doesn't carry -
go to a real plumbing supply and buy the correct (red) flange
and bolt down CF with tapcon screws...

Sad to see Richard didn't perform that code requirement

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Old 12-17-2017, 11:24 AM   #7
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Re: Concealed rough in for toilet - help!


Quote:
Sad to see Richard didn't perform that code requirement
They did not show him adding the screws, flange to floor, but they are visible near the end of the video.
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Old 12-17-2017, 07:58 PM   #8
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Re: Concealed rough in for toilet - help!


My inside diameter is about 2 3/4 ". I don't think anything going inside is going to work, but I seem to have plenty of room outside. I think the contraption they put over the cast iron pipe prior to pouring the concrete is designed for either a cast iron flange or something over the outside. I live in a town of 10,000 so our fitting supplies are limited. I contacted a plumber and from my description over the phone he said it probably wouldn't take him more than an hour to fix it. He said he can get to it tomorrow or Tuesday. I think that some of the pieces you guys have showed me would halve solved my problem but our local stores don't have them and apparently have not heard of them. My wife says it will be money well spent as I will learn something. Great to have a forum like this.
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