Re: anyone resurfaced themselves to fix a leaky concrete poo
Hi Sally,
I am not a licensed pool builder, just a pool service tech...so you can take everything I say with THAT in the background of it...
But it sounds like the biggest part of the problem is that you have two different materials being used to form the pool. To me, that sounds like trouble from the very start. If this were just a pure concrete pool, you could just patch leaks or cracks with epoxy patching materials, and then epoxy paint the whole pool interior. This gives you a pool that is extremely easy to maintain (algae just can't seem to get a grip on that slick epoxy paint)...
But in your case, you are going to need to find some way to marry the fiberglass walls with the concrete bottom so that they really are married and never stray on each other...and that could pose some problems. Once you know you have a pool that is structurally sound, a high-quality epoxy paint (BTW, proper preparation, rain guarding, and curing is A MUST with this coating--no shortcuts!) is an inexpensive way to get yourself a wonderful pool that is easy to maintain. I know this from experience with my customers' pools when they need resurfacing (etched plaster, etc.).
Hope this helps you,
Aloha!
Warren