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Old 01-07-2012, 08:07 PM   #1
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Proper Toilet Flange Installation


I'm converting a 2nd floor storage room to a bathroom. I've never done this before but I'm trying to learn as I go and do as much as I can myself.

I paid a plumber do the rough plumbing for me. After the plumbing was done I put in a couple sheets of subflooring and put down an electric heated mat covered in self leveler. I intend to put the flange on top of the finished floor, but I think I may have a problem:



There's 1.5" inside the PVC pipe and the top of the PVC pipe is another 1.5" from the top of the self-leveler. I intend to put down thinset, ditra underlayment, thinset, and ceramic tile. By my math, I'm expecting that to raise the distance between the top of the finished floor and the top of the PVC drain another .5" to a total of 2".

The flange itself is 3" deep. Is that enough contact?

I tried dry fitting it and it's not a snug fit like I was expecting which kind of makes me worried the glue won't bond properly.

Also when dry fitting, I noticed the flang doesn't sit flush on the subfloor. That's not normal right? Looking at the flange, does this mean I need to widen the hole or should I buy a different type/brand of flange?

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Old 01-07-2012, 08:23 PM   #2
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Proper Toilet Flange Installation


That flange needs to be flush with the finished floor not the sub floor.

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Old 01-07-2012, 08:26 PM   #3
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That flange needs to be flush with the finished floor not the sub floor.
Is that why there is that 1/4" thicker piece of pvc that surrounds the 3" pipe?
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Old 01-07-2012, 08:30 PM   #4
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Proper Toilet Flange Installation


Does that metal ring come off of the tail piece?
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Old 01-07-2012, 08:37 PM   #5
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Proper Toilet Flange Installation


There are a lot of different types of flanges available---is that a pipe sticking up or are we looking at a fitting?
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Old 01-07-2012, 08:45 PM   #6
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Proper Toilet Flange Installation


Looks like the top of a coupling with that tapered edge.
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Old 01-07-2012, 08:54 PM   #7
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Proper Toilet Flange Installation


That's what I thought---A short length of pipe and an outside flange --maybe trimmed a bit--would work well---
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Old 01-07-2012, 09:10 PM   #8
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Proper Toilet Flange Installation


Quote:
Originally Posted by joecaption View Post
Does that metal ring come off of the tail piece?
No, it doesn't

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Originally Posted by oh'mike View Post
There are a lot of different types of flanges available---is that a pipe sticking up or are we looking at a fitting?
The pipe the the end of the drain elbow. The 3" pipe on the flange fits inside it, though it's not very snug.
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Old 01-08-2012, 06:11 AM   #9
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Proper Toilet Flange Installation


Either trim that piece and make it shorter---or get an outside flange and add a short piece of pipe---
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Old 01-08-2012, 06:34 AM   #10
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Either trim that piece and make it shorter---or get an outside flange and add a short piece of pipe---
Thank you!
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Old 01-08-2012, 06:55 AM   #11
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You are welcome----It's not hard to trim that one down--Flush to the floor--Mike---
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Old 01-08-2012, 09:18 AM   #12
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Proper Toilet Flange Installation


I don't know if you still need help with this issue but I install flooring as a career and deal with this all the time. You should install the flange to the finished floor now. To bring it to height after tiling you can purchase flange extensions. These are flat discs that resemble the top disc portion of the original flange. You may need two. To install them, place a small bead of silicone on the bottom side around the extension, place on top of the original flange so that it is aligned and then screw it on. Hope this helps.

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