Im getting conflicts of advice so far on this so im asking on here as im sure someone will know. We are having our bathroom refurbished and the plan is to take up the laminate floor and replace it with non-slip ceramic tiles. The floor is boarded (chip board sort of wood) and pretty much level but Ive been told you need a ply on top of that for the tiles to go on. Ive been told a 6mm ply but others have said 15mm minimum, that being a massive difference in thickness. I believe the board has to be fastened with corrosion resistant screws and I need to use flexible tile adhesive. Do I need some kind of waterproofing or any specific type of board? What would be the recommended thickness? We used Aquapanel on one of the walls, would this be suitable for the job on the floor, its about 8mm thick My concern is, a 15mm ply, then adhesive, then tiles would make the floor too high for the toilet waste outlet to fit without having to mess about moving it.
If floor is stable, with no movement? Then glue and screw 6mm Hardibacker (as mentioned) For total overkill, then use a 2 part adhesive for the tiles.
I'm sorry for a dumb question, but what do you mean by "flexible floor"? I'm trying to redesign my bathroom at the moment too and I'm working on the floor and you just confused me.
Any flexing of the original flooring. The floor needs to be totally flex/movement free.......or your tiles will pop up.
Rather than over board, why not take up the floor which should be an easy job and then replace it with the 19mm Hardie T&G flooring - 2400 long 500 wide. I used it in my wet room and it was so easy to install some screws and some adhesive (Yellow Grip) to lock it all together. Tile straight on top using an Ardex X7 or X77 adhesive - both are flexible and the latter is "reinforced".
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