Use Of M Sand

stone dust vs sand for laying pavers? help! orchid_ladycats.July 1, 2005.Is it possible to lay brick in top of the concret? can i use sand stone or do i ust a mortor to lay bricks on top.I am a women trying to do it myself.Finally, add the 4" of top layer sand or stone dust (i'm leaning towards sand).Don't forget the polymeric.