Hi, i was on here a couple of weeks/months back asking for advice on a gas pipe, well i am back.The conservatory is up and water tight and everythings coming together nicely (next question).I have quarry tile floors in my house and have aquired some tiles to put in th conservatory (lucky me), my question is how to lay them?.In my house they are on ash (old house) but in the conserv i have laid a foundation with blocks on top so how do i lay em?.My first idea was a concrete pad then lay em on sand cement be , but how deep should the slab be (if i need one at all ).As you can see i need a few pointers so any help offered is good help thanx in advance