guys, I am wanting to add some class to my own house. I have a sidewalk (cement) that looks fairly crappy so I figured I could liven it up by veneering it with florida native flagstone. First question: how does one properly do this over an existing cement slab? I assume you would cement or thinset it in and then grout it? second question: I also want to "T" into this with a second walkway that is currently just grass. I really don't want to put in another cement sidewalk, wait for that to cure and repeat the solution to question 1. I am thinking I should install it like one would with pavers. crushed rock base, then sand then flagstone. My question becomes, will that create a problem butting up to the cement base walkway? Will it look weird or rednecked having the two different techniques? If so, is there a way to reduce that disparity? Any better ideas? thanks in advance for any ideas and help.