bathroom tile query

Discussion in 'Flooring' started by mikejurasw, Jun 29, 2018.

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  1. Jun 29, 2018 #1

    mikejurasw

    mikejurasw

    mikejurasw

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    Greetings, (first post in a long time!),
    I am strategizing for a bathroom re-do and need some advice about flooring. We live a 1920 brick home in Ohio, so my bathroom floors are a 3-4 inch deep mortar bed with small hexagonal tiles embedded. Over this, the previous owner laid (poorly) slightly bigger hexagons (the kind on a backer fabric), and I intend to hoe this up and start over. My questions are: since the original floor is not level (dips in the middle...I suspect a crack), how should I level it before laying newer, hipper tile? And, can I put down new ceramic tile over the old hex stuff with just mastic/thinset? (and is there a difference between those two?).
    Any help will be greatly appreciated!
    Best, MM
     
  2. Jun 30, 2018 #2

    oldognewtrick

    oldognewtrick

    oldognewtrick

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    Is there by chance access to the floor joists from below the bath area so you could stretch a string to see if it's the structure that's deflected?
     
  3. Jun 30, 2018 #3

    havasu

    havasu

    havasu

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    If the floors have highs and lows, and not structural like ol' dawg spoke of above, I would chisel out the old crap, then level the floor using SLC (self leveling compound).
     
  4. Jul 1, 2018 #4

    slownsteady

    slownsteady

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    I wouldn't tile over the old stuff. Bite the bullet and get the old floor out. Just how much higher can you afford the bathroom floor to be???
    1/4" Hardiebacker makes a pretty good base for the new tiles
     

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