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Old 12-11-2009, 12:17 PM   #1
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Toilet Drain Distance from Wall?


I am putting in a new toilet flange and drain pipe since the old one leaked. I also replaced the floor since it was rotted from the leaking toilet and forgot to check where the flange was relative to the wall. How close does it need to go from the wall? Do you measure to the center of the flange or the front/back of it? I think its 13" to the center but I don't remember for sure. My drain is 3". Thanks.

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Old 12-11-2009, 12:22 PM   #2
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Toilet Drain Distance from Wall?


You can get different toilets with different rough-in dimensions.

Standard is 12 - 1/2 " from the rough framing on the rear wall or 12" from the sheetrock

you can get 10" and 14" rough toilets too, but they are more spendy.

Also, make sure you are 15 1\2" MINIMUM in the clear from center on both sides of the toilet (from rough framing), otherwise it will be uncomfortably tight when using it. Thats a total of 30" in the clear after sheetrock with the toilet centered.

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Old 12-11-2009, 01:49 PM   #3
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Toilet Drain Distance from Wall?


If it is a 12" rough toilet and you make it 13" from the framing (12 1/2" from the finished wall) you will be able to get one of those thin paint roller behind the tank when you paint. Also the extra 1/2" is good for a little fudge factor just in case...

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Old 12-11-2009, 01:52 PM   #4
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Toilet Drain Distance from Wall?


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Originally Posted by RegeSullivan View Post
If it is a 12" rough toilet and you make it 13" from the framing (12 1/2" from the finished wall) you will be able to get one of those thin paint roller behind the tank when you paint. Also the extra 1/2" is good for a little fudge factor just in case...

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That really depends on the toilet itself. They vary depending on which style you choose.

Check rough in specs on your specific toilet to be sure.
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Old 12-20-2009, 03:37 PM   #5
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Toilet Drain Distance from Wall?


if it is a 12" r.i.toilet than it is placed 12" from the framing(stud).
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Old 12-21-2009, 09:18 AM   #6
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Toilet Drain Distance from Wall?


Sorry Rudolph58, but the rough-in measurement for a 12" rough toilet is 12" from the finished wall.
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Old 12-21-2009, 10:11 AM   #7
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Toilet Drain Distance from Wall?


I just finished setting the toilets in the log house we're building. I didn't plan it this way, but the upscale toilets I bought have an adjustable rough-in. Never seen that before.
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Old 12-21-2009, 10:35 AM   #8
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I have R.I.over 500 floor mnt. toilets and unless spec.out differently,12" from a metal or wood stud to c/l of flange has is what 85% of lic.plmbers in the state of IL.set them at.Yes I make mistakes,but I guess we can't all be perfect like U.
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Old 12-21-2009, 11:27 AM   #9
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Toilet Drain Distance from Wall?


500 huh? You must be new to the trade. I have done that many in hotels. Not saying I am perfect, but in 35 years of being in the trade, I have had to move drain lines that other people installed incorrectly. What if the wall material isn't 1/2" wallboard? Lets also throw some tile on it. You need to know the finished wall measurement before installing the drain.
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Old 12-21-2009, 01:00 PM   #10
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I stand corrected,

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Old 12-21-2009, 01:03 PM   #11
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Toilet Drain Distance from Wall?


also u missed SPEC.OUT
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Old 12-21-2009, 01:15 PM   #12
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I didn't miss the "spec out" since this tells you what distance the finished wall will be out from the studs. The rough-in for a 12" rough toilet is 12" from the finished wall. Glad 15% of IL plumbers are doing it correctly. Doubt that figure is correct either.
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Old 12-21-2009, 01:38 PM   #13
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That's 2 in one day
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Old 12-21-2009, 03:06 PM   #14
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WOW, you really get upset when you are wrong. Changing the subject and attacking doesn't change anything. You just continue to set toilets any way you want. I will continue to tell those requesting the proper way to do so, in this Forum, the way to do it and not need to force the tank against the wall and break the bowl.
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Old 12-22-2009, 10:49 AM   #15
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Toilet Drain Distance from Wall?


This is such a silly argument... Alan is right, it really depends on the toilet if you want an exact fit. I just checked the spec on two of Kohler's toilets, both 12" r.i. and one gave you an inch tolerance and the other 3/4". Both indicate 12" from the finished wall. The American Standard install guide clearly states in capital letters "THIS TOILET IS DESIGNED TO ROUGH-IN AT A MINIMUM DEMENSION OF 305mm (12") FROM THE FINISHED WALL TO THE C/L OF OUTLET." I believe Kohler has a similar section in their install guides.

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Last edited by RegeSullivan; 12-22-2009 at 10:52 AM.
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