I have a Roman style pool build in 1978. 12,000 gallon with a SWG. The surface is a slightly rough medium grey colored concrete I think. I can see where there are a few remnants of paint on it. I have been told that painting only lasts a few years. I am starting to get algae down in a couple chipped spots. Any ideas on a surface to apply. The border and tile seems solid. I think a tree root is pushing on the skimmer basket as the pool is surrounded by oak trees.
Andy
Andy