Hello all. I previously posted regarding the mortar coming up between the flagstone and concrete, caused by the expansion/contraction of the concrete without an expansion joint. However, I have a new problem/fix for this. In NW Oklahoma we haven't gotten much rain in several months, and last night we got nearly 4 inches in a few hours. This caused me to notice the water ponding terribly and lots of surface runoff into the pool. I am thinking a trench/channel drain is my best cure. I would like to put it between the concrete and flagstone by chipping out the flagstone and placing the drain between. And recommendations on processes to do this or products that will help solve both my ponding issue and also the cracking mortar issue? I can repost images ad I believe my previous three was deleted or moved.
Thanks in advance!