Im off to a job today. House owner got a builder in before going to Australia for 7 weeks, and one of his jobs was the kitchen floor (6m^2)
He called me the other week asking me to go look at it as you could trip over some of the tiles. Apparently when the home owner got back from Oz, there was a post it note stuck in the middle of the floor saying "its the flatest I could get it"
Needless to say, I lifted the floor which came up real easy (B&Q adhesive?), no adhesive stuck to the floor, and have latexed the screed flat, and am about to go over and fix the tiles.
What a waste of money for the poor bloke. He said something about paying the builder a visit with his chainsaw in one hand