Epoxybond Pool Putty 2-Part Set Swimming Pool & Spa Repair Easy DIY Fix Cracks Leaks Underwater or Above Concrete, Fiberglass & Variety of Other Surfaces by Atlas Minerals

I used pool putty to patch holes in the grout on my tile water line and coping. It's super easy to use and hardened overnight. My pool compa y used it to patch a leaking surface crack way back in the 1990s, and I have used it ever since. The mixing and curing process is simple.It is equal parts of both. It applies easily and seals up all kinds of issues that would become a bigger problem if left undone. There is a shelf life to this once open. i try to use it all up in one season and discard any leftover. It is inexpensive enough to buy new when you need to do repairs. No one will notice these repairs. It is the easiest maintenance process for aging pools.