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Thread: Tile floor: Spacing/raising ceramic tile with no heat mat underneath

  1. #1
    DIY Member rfsmith48's Avatar
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    Default Tile floor: Spacing/raising ceramic tile with no heat mat underneath

    Folks,

    We are remodeling a small bathroom and adding an electrical heat mat under the tiled area with foot traffic. (About 50% of the floor area.)

    Can anyone recommend a method for spacing up/higher the tile that does not get the mat? (Nominal thickness for the mat is .125")

    Is there a Tile install forum that would be a better source for this type of info?

    TIA,

    Rog

  2. #2
    DIY Senior Member BobL43's Avatar
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    Quote Originally Posted by rfsmith48 View Post
    Folks,

    We are remodeling a small bathroom and adding an electrical heat mat under the tiled area with foot traffic. (About 50% of the floor area.)

    Can anyone recommend a method for spacing up/higher the tile that does not get the mat? (Nominal thickness for the mat is .125")

    Is there a Tile install forum that would be a better source for this type of info?

    TIA,

    Rog
    Good question. You can join the John Bridge tiling forum

    http://www.johnbridge.com/vbulletin/index.php

    and ask your question there. I think the notched trowel size (notch size) you use will determine the thickness of the thinset mortar between the tile and the subfloor when the tile is set and should easily accomodate the thickness of that mat. They have the answers over there, for sure.
    I am definitely not a pro plumber, but I am a pro crastinator

  3. #3
    Moderator & Master Plumber hj's Avatar
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    Use a self leveling floor filler to raise the rest of the floor, or a thicker thinset bed and level the tile to the raised portion.
    Last edited by hj; 10-17-2012 at 03:48 PM.
    Licensed residential and commercial plumber

  4. #4
    ACO Shower Drain Sales johnfrwhipple's Avatar
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    The maximum thickness of any thin-set mortar is 1/4". The term "Thin-Set" is for this 'Thin Set'. 1/4" is not a lot.

    You may consider using a "Thin-Set Mortar" than is also a "Medium Bed Mortar and Thick Bed Mortar" Ardex's X32 is just that. It can be installed up to 1" thick and is rapid setting.

    Be careful how much you mix and one time. It would be safer to dry mix the bag and separate it into 4-6 portions. Mixing each as needed. Do not mix this thin-set and then go measure a tile, cut tile, dry fit and so on. Have your cuts ready and mix a small amount.

    We used it on this niche project recently and out in UBC on our new project.



    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.

  5. #5
    Moderator & Master Plumber hj's Avatar
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    The "mat" is .125 which is 1/8".
    Licensed residential and commercial plumber

  6. #6
    DIY Senior Member BobL43's Avatar
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    Quote Originally Posted by rfsmith48 View Post
    Folks,

    We are remodeling a small bathroom and adding an electrical heat mat under the tiled area with foot traffic. (About 50% of the floor area.)

    Can anyone recommend a method for spacing up/higher the tile that does not get the mat? (Nominal thickness for the mat is .125")

    Is there a Tile install forum that would be a better source for this type of info?

    TIA,

    Rog
    I see you registered on John Bridge and they recommended using sef leveling compound like HJ did also.

    I am definitely not a pro plumber, but I am a pro crastinator

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