Hi there - First time poster - so hopefully doing this right.
Had a few (about 7) tiles start to separate from pool wall just under the edge. I carefully removed and found roots growing in from in between the bottom of the cool deck and the top of the pool. (sorry - not sure the proper terminology). I removed most of the growth before taking the pics (uploaded as attachments) - but you can see it is coming in from the top down.
Not entirely sure where they are coming form as they were very thin and fiberous (at first thought it was asbestos or something) There is a medium (10 ft tall) palo verde about 20 feet away on that side of the pool -and a large Saguaro cactus (15 ft tall - about 20 ft away) and a couple medium size shrubs about 6 ft away.
The wall seems pretty good shape. So I was just going to clean everything and put the tiles back up BUT wanted to see if there were any suggestions about how to make sure the roots don't just come back? Is there any type of caulk or sealer that would be recommended to put in between where the cool deck hits the pool top? Also - anything that is good at killing roots directly?
Thanks for any insight