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    surfdad's Avatar
    surfdad Posts: 1, Reputation: 1
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    #1

    Jul 15, 2012, 08:30 AM
    pour concrete over existing tile floor
    need to pour concrete over existing step down slab , depth about 4.5" and size is 22x10. The existing slab is covered with ceramic tile ,is it possible to pour over with no major problems?
    creahands's Avatar
    creahands Posts: 2,854, Reputation: 195
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    #2

    Jul 15, 2012, 10:27 AM
    If outside water will get between tile and concrete. In winter, water will freeze and crack concrete.

    There is an additive u can paint on existing slab,not on tile, and add to concrete mix for added strength. Use wire mesh in middle of depth.

    Chuck
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