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Thread: closet flange

  1. #1
    DIY Junior Member 7echo's Avatar
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    Default closet flange

    It is about 1 1/8" from tile deck to top of pipe, and 1 5/8" from tile deck to the slab right around the pipe. This is the result of a bad remodel 15 years ago. I want to fill in the area so that it supports the flange properly and adds material for the flange bolts to anchor. What should I use to fill this area? What bolts should I use to anchor the flange in the new material?

    Thanks for comments!
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  2. #2

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    This is not the "ideal" situation and I am even hesitant to comment because I am sure you will get many opinions, however.

    I would insert the flange and then "mud" around it, Once the mud is dry I would drill the tile with a mason bit and insert mollies and then secure the flange down with screws into the mollies.

    Once the flange is has dry mud around it and then the flange is secured into the tile, then you could install the toilet.

    Thats just what I would do.

    Hope This helps, I am sure there will be other opinions as well.
    [B]
    You Should Assume Everything I say Is A Complete Lie - Thank You ~

  3. #3
    Moderator & Master Plumber hj's Avatar
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    Default flange

    We would not do what it looks like you intend to do. That is a cast iron riser pipe and it is probably no where near smooth, so that gasket will probably NOT make a watertight seal.

  4. #4
    Master Plumber nhmaster's Avatar
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    Looks like a chance to break out the lead pot to me.

  5. #5
    DIY Junior Member 7echo's Avatar
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    OK, OK, you don't have to tell me twice : )

    I have no prob returning that closet flange. However, the interior of the pipe is not too bad and I think the gasket would seal, it is very tight when I checked it by pushing it in a little.

    I am open to options!

  6. #6
    Moderator & Master Plumber hj's Avatar
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    Default flange

    Me, too, but didn't want to lay too much on him at one time.

  7. #7
    DIY Junior Member 7echo's Avatar
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    If pouring lead is involved to make it right I will call the plumber. How do you extend that drain pipe?

  8. #8
    Retired Defense Industry Engineer jadnashua's Avatar
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    I think they may long throat cast iron flanges that could be installed...this is unlikely a DIY'er option, though. The tools required could add up quickly and make having a pro do it probably the best choice.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  9. #9
    Consultant cwhyu2's Avatar
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    They do make a deep cast iron flange to fit over 4" ci pipe.This is not dyi job.

  10. #10
    DIY Junior Member 7echo's Avatar
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    Thanks for the comments guys.

  11. #11
    Moderator & Master Plumber hj's Avatar
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    Default flange

    You use a 4" long closet collar and then refer to a previous posting as to how to install a "Dutchman" inside it to make the wax ring fit properly.

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