I have a stone walkway and steps up to my front door, and the front facing pavers/stones on the top step have come loose yet again. When I put them back up, in order to have them flush at the top of the stair, there is about 1/2 in gap on the bottom. It looks fine, but I think the lack of support on the bottom is causing these things to repeatedly fall down.
Should I just find some slightly larger pavers? Or should I build up the bottom layer with something to offer support? If I did this I think I would only want it in the back so it was not visible. Or should I try the same approach with some possibly better adhesive (any recommendations here?) and convince my 4 year old daughter to stop standing directly on these "hanging" stones?