No insult taken . . . I didn't actually think Pebbletec was eroded plaster, but I've seen pools with, hmmmh, shall we say raggedy edge finishes, so I didn't want to get too specific. The bottom line for me, when I'm posting here, is that I'm usually pretty conscious that I don't really know what the poster actually has on, or in, or around their pool.

In this case, seeing the pictures was really interesting. I hadn't realized that you'd get waterline deterioration of the interstitial filler in Pebbletec like his pictures show.

By the way, do you happen to know the actual chemical or mineral composition of the "pebbles" and of the filler?

PoolDoc