What base/fill is best for a walkway with thin slate flagstone?

I have a bunch of Vermont slate flagstone that varies from about 1/2" to 1" thick, which I'd like to use for a walkway. The flagstone was originally just set in the sandy soil, which was functional (i.e. the stones didn't crack) but the aesthetic was a little too hobbit-y. I'd like to use pea gravel (or similar) in between the stones, but it seems like every DIY tutorial uses 2" thick flagstone. But the thin flagstone is here, and free. So with all that said....what would be a good base that would support a thinner flagstone? Would paver base do the trick? And is pea gravel an okay choice for the in-between fill? Thanks! submitted by /u/iwasspinningfree [link] [comments]

Apr 29, 2025 - 13:21

I have a bunch of Vermont slate flagstone that varies from about 1/2" to 1" thick, which I'd like to use for a walkway. The flagstone was originally just set in the sandy soil, which was functional (i.e. the stones didn't crack) but the aesthetic was a little too hobbit-y.

I'd like to use pea gravel (or similar) in between the stones, but it seems like every DIY tutorial uses 2" thick flagstone. But the thin flagstone is here, and free. So with all that said....what would be a good base that would support a thinner flagstone? Would paver base do the trick? And is pea gravel an okay choice for the in-between fill? Thanks!

submitted by /u/iwasspinningfree
[link] [comments]