Subfloor buildup for tile

Discussion in 'Plumbers' Talk' started by Hammertime21, Apr 1, 2023.

  1. Hammertime21

    Hammertime21 New Member

    If starting from joists, what subfloor would you use these days? Ply first and then a backer board layer? (what thicknesses?). Plan is to tile floor with porcelain tile 20x20cm, electric heating mat under. Thanks.
     

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