How to do a hand carved flagstone concrete overlay wall, outdoor kitchen, fireplace or seat wall is an easy and less expensive way to get the look of flagstone, boulders, cut stone, castle stone...without the weight, mess or cost of using real flagstone, stone or stone veneer. The benefits are...less cost, easier to apply, 100% coverage to the substrate means no delamination or water intrusion that can cause damage. Classic or custom looks, and incredibly beautiful rock and boulder looks...that are actually concrete, so it has 3000 psi when dry and will last as long as concrete.