If an area is on tiles on ply careful of movement it using a hard brittle latex, although not recommended you might be worth looking at a ball 700 type latex to allow for any movement
I'm not sure but I wouldn't have thought there would be that much movement with ceramics on wood to warrant a fibre flexi like 700, hopefully a polymer flexi like LevelIt2 will be sufficient.
Same here mate. LevelIt2 can go over ply, ashpalt, adhesive residues, anylhydrate. Flows great and cheaper than Renovation!
I would n`t use the Level It 2 over ply mate. I`m a fan of there product, but I used it over ply and it cracked.Big area too. Would not use it again over ply. Saying that, Renovation has cracked over ply, but just has enough fiber to hold it together. I don`t know why Instarmac don`t bring out a fiber screed. I spoke to there rep years ago, and they said they were working on one, and adhesives too.