I just had my pebble tech chipped out and redone. It is unbelievable the pebble tech I have, aqua blue, is not UV resistant. The new pebble will be different color. The cracks will likely grow to the point of really needing replacement, at least the did in my case. The pebble warranty is 5 years, but don't expect much compensation. My cracks started small and grew to 1/2" cracks on the side of my main pool.