And you guys, don't know what your talking about..You guys here in the UK tile onto plywood-chipboard alot which is unacceptable, you guys think if you use fexibile adhesive you are ready to go, that s wrong, 9 out of 10 jobs fail because of that. You need a subfloor, durock, ditra, screeds, hardibecker, etc... So you got hacked, it is a common thing here in the UK Home - TileMarbleGranite