Cement Board Under Floor Tiles. Drywall screws spaced every 6 in. This is a distinct advantage over plywood and drywall. On top of the 2×6 will be 3/4″ subfloor, thinset, cement board, redgard, thinset, tile.
Then take actual tile material into account ( com2 floor rated porcelain for example) and finally. Then you should be fine using just the foam underlayment on your existing subfloor before. You need to first rate youre structure via a deflection rating.
Gallery of Cement Board Under Floor Tiles
Please see description for important information!please consider a small donation to support my channel so i can keep bringing you great videos in the future. This provides a solid surface under the tile that prevents flexing that could lead to cracking. However, you're not out of the woods: Firm and in good shape.