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Thread: shower drain not flushed with tiles

  1. #1
    DIY Junior Member Amjad's Avatar
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    Default shower drain not flushed with tiles

    I have been working on a standing shower done with ceramic tiles all around. I have used kerdi to waterproof the whole thing. I slightly misscalculated the drain height and now the tile around the drain is sitting about 1/8th of an inch lower then the drain. I did use extra thin sit mortar all around to try to bring it to a level but I still ended up being 1/8th short. If i just tile it this was ill have water staying around the drain.
    I was thinking to use a little extra mortar underneath the 2 tiles which will be cut around the drain but the problem is that it'll become higher then the ones surrounding it and the problem wont be solved.
    If anyone has experience with this please help me out. I'd really appreciate that.
    Thanks!

  2. #2
    ACO Shower Drain Sales johnfrwhipple's Avatar
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    Default Shower drain not flushed with tiles - Cont

    post(s) deleted by John Whipple
    Last edited by johnfrwhipple; 03-17-2014 at 04:37 AM.


    jfrwhipple@gmail.com - www-no-curb.com - 604 506 6792

    Always get construction advice double checked by your local city hall. Flood Test Every Shower - Every Time.

  3. #3
    Moderator & Master Plumber hj's Avatar
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    IF the drain head is adjustable, and not all are, then you can remove the thinset from around it and screw it down. If it is not adjustable, you may have to remove the upper portion of the drain and find a compatible one which IS adjustable.

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    Retired Defense Industry Engineer jadnashua's Avatar
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    Assuming you have the Kerdi drain, the center part that holds the grill just floats in the thinset. You may need to chip some out, but you can then reset it to whatever (increased) height you need. If it is down all the way, there's nothing you can do to lower it, but you can raise it a fair amount. No screws on this drain.
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    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  5. #5
    DIY Junior Member Amjad's Avatar
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    Thank you so much guys for your response. I really appreciate it! I used a standard weep hole drain because the kerdi one was just too damn expensive! and i thought it was for no reason but it turns out I was wrong. this drain has a base flange with the weep holes and threaded drain cap. It can only go down so much and at its full depth its still 1/8 inch above the tile. I couldn't get the pictures today but ill try to get them tomorrow.
    is there anything you think i can do? or am I stuck with water around my drain :S

  6. #6
    Moderator & Master Plumber hj's Avatar
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    It depends on WHY it is still too high when screwed all the way down. If it is hitting the drain fitting, then you are stuck, but if not you may be able to cut the threads off a screw it down further. Where you really messed up was having the drain all the way down BEFORE you started tiling. That eliminated any possibility of adjusting it later. AND you should ALWAYS allow for later adjustment, whether up OR down.
    Last edited by hj; 01-02-2011 at 07:00 AM.

  7. #7
    ACO Shower Drain Sales johnfrwhipple's Avatar
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    Default ... Shower drain not flushed with tiles ...

    post(s) deleted by John Whipple
    Last edited by johnfrwhipple; 03-17-2014 at 04:37 AM.


    jfrwhipple@gmail.com - www-no-curb.com - 604 506 6792

    Always get construction advice double checked by your local city hall. Flood Test Every Shower - Every Time.

  8. #8
    Retired Defense Industry Engineer jadnashua's Avatar
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    It's possible, but not recommended to try to seal Kerdi to a standard compression drain designed for a liner. And, since the Kerdi goes on top, how did you seal the weep holes? The whole benefit of the surface membrane is that no water ever gets beneath it, so no weep holes required. Schluter does make an adapter that fits in a drain like you have to convert it for proper membrane installation. The Kerdi system is just that, a system. Trying to patch it together with incompatible parts is asking for problems.

    I think what John is alluding to is using a grinder to shorten the body so that the top part will screw down further...risky, but maybe possible.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  9. #9
    ACO Shower Drain Sales johnfrwhipple's Avatar
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    Default Using Kerdi with a regular compression flange.

    post(s) deleted by John Whipple
    Last edited by johnfrwhipple; 03-17-2014 at 04:37 AM.


    jfrwhipple@gmail.com - www-no-curb.com - 604 506 6792

    Always get construction advice double checked by your local city hall. Flood Test Every Shower - Every Time.

  10. #10
    DIY Junior Member Amjad's Avatar
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    alright guyz! so ive put the links to the pictures at the end.... just to explain a lil more... I sealed the kerdi around the base of the drain and cut the holes for the weep holes and its glued to the ring of the base flange in a way that water has no place to go but into weep holes.

    the threaded drain cannot go down any further. its not stopping because of the thread but because the body of the drain and base flange is flushed. (no space to go down further, im sorry if im not expressing it correctly. i am having trouble describing it in words).

    @ JOHN
    Thanks for your interest and enthusiasm to help man! I really appreciate it... here are the answer to your questions.

    When you installed the Kerdi to the compression drain did you use any Kerdi Fix?
    A: I just used silicone to make a water proof seal around the drain with the kerdi (ive done that before once and it work pretty well)

    Did you build up another mud layer ontop of the Kerdi after it was installed?
    A: No, tiles were put directly on top of kerdi. Kerdi was put over the dry pack.

    Did you flood test this shower?
    A: No, I did not not. The shower is being added in the basement so I there is no good way to check any leakages. Also, do let me know how do would I perform a flood test if the shower pan being on basement concrete.
    This brings me to another question/problem. I packed the shower utrap under the concrete crunch and layered it with topping/thin layer rough-in concrete and then made the shower pan with a scratch coat mortar. So in this case I can hardly think of any adjustment that ill be able to make with the flange :S

    Do you have a steady hand and a grinder?
    I do have a grinder and yes I can handle the grinder well.



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    Last edited by Amjad; 01-03-2011 at 07:34 AM.

  11. #11
    ACO Shower Drain Sales johnfrwhipple's Avatar
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    Default A Kerdi Shower without a Kerdi Drain - How To

    post(s) deleted by John Whipple
    Last edited by johnfrwhipple; 03-17-2014 at 04:38 AM.


    jfrwhipple@gmail.com - www-no-curb.com - 604 506 6792

    Always get construction advice double checked by your local city hall. Flood Test Every Shower - Every Time.

  12. #12
    DIY Junior Member Amjad's Avatar
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    No there is no other liner and the kerdi is not under the ring but over it and glued to it. How was I suppose to put it under. This is how I did it. I made the shower pan with the scratch coat mortar after putting the base of the compression drain in place to make the shower pan flushing with the base. Once it dried I put kerdi using the thin-set mortar and cut the hole carefully around it still being over the border of the drain base and put some white silicone under it and pressed it. Please let me know what did I do wrong here and what should have been done instead. This is my second shower and i'll be doing another soon, so I better stop learning from my mistakes and get stuck everytime, rather just ask an expert (even though how I did this was from looking at online tutorials and youtube videos and stuff)

    Thanks for the flood test technique. Once the drain problem is solved, I'll try that.

    Now coming back to the problem, I think, I can grind the drain cap since its slightly tapered right at the base of the thread. If, I do not ruin the thread, I might able to get a little bit of more clearance and it'll go down a bit more.

  13. #13
    Retired Defense Industry Engineer jadnashua's Avatar
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    The preferred thing to attach Kerdi permanently (if you can't use thinset) is KerdiFix. Don't remember what it's made of, but it's not silicon. It's designed as a permanent adhesive. The better way to do this is to use the Kerdi drain, or the adapter to connect to a conventional drain. Way back before they came out with the Kerdi drain, they did have you use a compression drain...that was before I learned of the system, so I'm not up on the details.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  14. #14
    ACO Shower Drain Sales johnfrwhipple's Avatar
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    post(s) deleted by John Whipple
    Last edited by johnfrwhipple; 03-17-2014 at 04:38 AM.


    jfrwhipple@gmail.com - www-no-curb.com - 604 506 6792

    Always get construction advice double checked by your local city hall. Flood Test Every Shower - Every Time.

  15. #15
    DIY Junior Member Amjad's Avatar
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    @jadnashua
    I'll try to look for the adapter. I tried looking for one at the home depot and they didn't seem to have a clue about it. In fact, where did you guys buy the Kerdi Fix from?? Coz they didn't have that either!

    @John, I have already taken the tiles out from all around the drain so I have space to do the fix you've suggested. As for installing the kerdi drain, I am assuming that it'll require to brake the slab which would kinda hard for me to do in this particular case. So I think let try the fix thing with this one at least.

    I'll try to do what you've suggested and update you how it goes... Just one quick question though... Wont I have to snug the kerdi overlapping patch under the existing laid kerdi to avoid seepage because of the slope. if it'll be under it it'll just drop on to the patch and drain towards the weep holes... Or do you think Kerdi Fix will create a strong waterproof seal?

    John, you gotta come up with some way of installing Kerdi with standard compression drains man... Honestly, it just hurts me to pay 100 bucks more just for a drain. Theres gotta be a way man....
    Last edited by Amjad; 01-03-2011 at 09:44 PM.

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