polymeric sand or stone dust? | flagstone joints | how-to
May 09, 2013 · Hose down. Then tamp. Lay an inch of 1/4″ minus (stone dust, oathway fines, DG) over this, screed out nice and level, hose down ( on the shower setting, don’t soak) then tamp. Will dry up to a fairly hard surface. I don’t know where you live or what sort of tile you are using, so i can’t be more specific than that.