Noseall, maybe you'd like to enlighten me as to where the answer is - bearing in mind that I'm not putting down any ply simply laying each tile half on concrete/half on floorboard.
I have the problem of needing to lay ceramic tiles half of the tile on concrete half on floorboard (about 10 tiles in total). The levels are the same - would I need to do anything special or would just using a flexible adhesive like Ardu-Flex 7001 be ok? Many thanks.