[Bill Douglas]

1990, I don't see it as being any more difficult than concreting down outdoor tiles - other than the varying thicknesses. I think a tack coat of concrete, a layer of concrete around and under each one. Scrub the excess concrete off the surface of the flagstones. Spray with Rugasole. Lightly waterblast the next day. The more rustic it looks the better.

You can do it!