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

Discussion in 'Shower & bathtub Forum & Blog' started by rfsmith48, Oct 17, 2012.

  1. rfsmith48

    rfsmith48 New Member

    Messages:
    44
    Location:
    Colorado
    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. BobL43

    BobL43 DIY Senior Member

    Messages:
    1,792
    Location:
    Long Island, NY
    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.
  3. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,537
    Location:
    Cave Creek, Arizona
    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: Oct 17, 2012
  4. johnfrwhipple

    johnfrwhipple I love these ACO Shower Drains - Best in Class

    Messages:
    4,054
    Location:
    North Vancouver, BC
    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.

    [​IMG]
  5. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,537
    Location:
    Cave Creek, Arizona
    The "mat" is .125 which is 1/8".
  6. BobL43

    BobL43 DIY Senior Member

    Messages:
    1,792
    Location:
    Long Island, NY
    I see you registered on John Bridge and they recommended using sef leveling compound like HJ did also.

    :)
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