Wasn't that difficult. I had never done it before, but it was VERY time consuming. Like putting together a huge puzzle with no picture. Took three of us about 20-25 hrs to do all of it. total was only about 80 sqft. We did go with the drystack look, which the place we bought the stone from said was the more difficult/time consuming way to do it. It was all worth it in the end and everyone that has seen it in person is completely amazed by it.