I have a area I want to put in a patio on top of a retaining wall would like to have flagstone all the way to the end. Can you mortar down the outside row of flagstone to the retaining wall and leave the rest dry laid in sand? Retaining wall is two foot thick concrete wall, not worried to much about movement
Also would like to have steppable/green joints, could joints be left ungrouted at mortared area or would the growth rip up the flagstone to quickly?
Also would like to have steppable/green joints, could joints be left ungrouted at mortared area or would the growth rip up the flagstone to quickly?