We’re remodeling 100 yr old bathroom and the rough in for the toilet is 14”(back wall). The top quality/style of toilets come with a 12” rough in so we would like to move the lateral pipe 2”. The main drain is only 12” from the last female joint on the side wall where it goes down. I can’t help think that using two 90’s in such a short distance would work. Any suggestions?

You may be able to use an offset closet flange to get you closer to the wall. This way you wouldn't have to move the toilet drain pipe. Or if you have enough room in the vertical toilet drain, you could use street 45s, or even 22 1/2s

Hi Beener...

You may be able to use the offset flange as Mygirlsdad suggested, but you would need to transition over to PVC or ABS plastic to do that. Not that that is difficult, except the cut into the cast iron pipe, but once the cut is made you can use a shielded clamp (see picture) and transition to PVC and make the 2" offset as MGD suggested. You can make the cut into the cast a few ways... let us know if you want to discuss.

You may also be able to break off the old cast iron flange and install a new cast iron offset flange (see picture). You would probably need a plumber to do this as the tools needed for this are not common tools.

Lastly, you can usually SPECIAL ORDER most 12" rough in toilets in 14"... just that you may need to order through a plumbing supply company... ;) Let me know the name brand toilet you are thinking about.. perhaps we can advise better?

MARK

Quote:

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Originally Posted by mygirlsdad77

You may be able to use an offset closet flange to get you closer to the wall. This way you wouldnt have to move the toilet drain pipe. Or if you have enough room in the vertical toilet drain, you could use street 45s, or even 22 1/2s

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The offset closet flange doesn't look like it would bring us two inches (14 to 12) closer but it's a good idea to look in to. I'm a novice but wouldn't it take eight 22's to circle around 180 degrees within a 12" length? :o

Hi Beener...

The offset flange that Mygirlsdad posted will indeed move you over 2". Most offset flanges, including the cast iron offset flange I posted only offset you 1.5". The offset flange that MGD posted will do the job best if you can find it locally.. if not it is easy to order it online.

We need more info. Here... OK? What material are you working with.. cast or updated plastic. How much room between horizontal pipe to the finish floor?

In terms of the 22.5 degree fittings... you should only need two to offset 2 inches... a regular 22.5 degree fitting and a street 22.5 degree fitting... and then you can use a regular closet flange (or 2 regular 22.5 degree fittings). Otherwise, you leave pipe where it is and use shielded clamp to transition to plastic pipe and then use the 2" offset flange Mygirlsdad showed you...

Let us know more...

MARK

I agree with Mygirlsdad and Mark, this offset flange will do the job, Good lluck.

John

We are dealing with old cast iron. The flange and the 12” lateral pipe need to be replaced due to demolition errors. (Electric Chipper Hammer.)There's approximately 3” between horizontal pipe and what “will be” the finished floor.

As to the toilet we would like to use, we're going with a Kohler tub but Am. Standard Champion stands out better in our research. (White) Bottom line, we want a toilet that flushes well and some style if possible.

Hiring a plumber may be easier but with your help, it wouldn't be better!! Thanks for your help.

Can you post a picture of your setup. This may help us give you more advice.