What to put between flagstone jointspolymeric sand or ...
May 09, 2013· Hello Chris. Screenings are crushed stone. The smallest grade of gravel generally available, consisting of small 1/8″ or less chips of stone and fine stone dust, like powder. Decomposed granite is crushed granite. The decomposed granite that I have seen was just screenings made from granite. Perfect for use in between flagstones.