Hello dbowman,

Interesting question.... so you may get some professional advice from the Landscapers out there... I hope you do, but as a patio, brick step, slate pathway DIY-er, I can tell you that once you have laid the stones on a perfect bed of sand and gravel, you brush additional sand between the pavers and that's it. Honestly. We have crafted four walkways / patios / curbs on our property and not one of them has moved in 14 years. Take a look at a You Tube video or two and you will see.

Best of luck!
Elizabeth Cabell, ASID, CID
Cabell Deisgn Studio