In my front yard I have a curved walkway made out of cement. The cement walkway is about 45 inches wide and sits on top of some compacted dirt.
This past weekend I used some exterior thinset mortar (rated for outdoor use and wet conditions) to mortar concrete pavers to the walkway.
My question is related to "grouting the joints".
- since I have a concrete base and no where for the water to drain, do I need to use polymer mortar to fill my joints?
- Or can I get away with using a polymer sand sweeping it in the joints and watering it down?