Had to remove about 300 sf of old 8x8 tile at a school here in Florida and grind down the old thinset then pour back right at 17 bags of Ardex K15 the old floor was had to be built up 1/2 to 3/4 plus was really out of level and not flat Then sand it down and go over it with a trowel down quartz floor and base Did the same in the kitchen restroom about 45 sf I set tap cons with my laser to get the finished floor height I needed had to be flush with the other floor tile. Took about 6 days total
It sure would be nice if a company could make tile from existing tile. Print out 400 ft of green 8x8 porcelain. Tap enter button!