We moved into a house with a flagstone patio with some sort of filler. The edges of the rocks on one side of the patio don't meet up, so the filler is slowly washing out when it rains. Google seems to recommend crushed granite (or, even better, stabilized crushed granite, but I haven't found any in my area). Do you have suggestions for how to dam the edges of the patio so the new filler will stay in? I don't think we're prepared to take on disassembling the patio to reset stones. Also, do you have any better suggestions for how to tackle this problem? Thanks!http://bit.ly/2VMR0iN via /r/DIY http://bit.ly/30DB4CW
