I've just removed an interior wall to open up the kitchen/dining area. There was a drop where the wall was, but that was filled in by the builders. Now there is still a gap between the two floors. The tiles on the one side won't be removed - they are at around 15mm height. On the other side the laminate is around 8mm in height. Any suggestions on the best way to fill the gap at a slope? Simple sharp sand/cement mix? I will probably put down some laminate tiles on the kitchen side, so no additional screed on top.