Swimming pool help

[Erie Skipper]

Need some input as to how to patch large 1" wide cracks in an older concrete, gunite, swimming pool. Have used butyl caulk like vulkem in the past, but only get a few years out of that patch. Any ideas any of you can share that have had similar experience? Any new materials you can recommend?

[ReelWork]

I think the bigger question is why is it cracking??

I don't know how it would work in a pool (at depth), but what about hydraulic cement? You can add the same fibers and pliability (silicone?) as regular cement as far as I know...

[Menzies]

Had a similar issue about 4 years ago. The pool vacumn had gradually thinned the edges where it constantly ran. I got three companies to come around and give me different options to repair.

Ended up taking their consistent recommendation and emptying the pool to resurface with Marcite.

[Erie Skipper]

Had a similar issue about 4 years ago. The pool vacumn had gradually thinned the edges where it constantly ran. I got three companies to come around and give me different options to repair.

Ended up taking their consistent recommendation and emptying the pool to resurface with Marcite.

Thanks, am sort of in process with people looking at it right now. The cracks were caused by the clay soil falling away during the dry part of August and people using the diving board a little to enthusiastically. I believe they have now widened and deepened as much as they every will and it's time for a better fix than high grade caulk---just trying to figure what that fix is.

Anyone ever heard of a company called Sani-tred out of Indiana? So far they sound like they have the cure if all they present online and via phone can be verified.

[Garett]

So is this crack in the pool or is it on the slab surrounding the surface of the pool?

[Erie Skipper]

In the pool itself, all the way to bottom on each side of the dive board; which, by the way is not in use anymore due to impact effect

[fishfighter]

What I had found is that those pools need resurfacing every 9-10 years.I really don't know that myself. At this time,I'm looking into a fiberglass pool. Now only if I can get the price down somewhat. 35 grand for another hole in the ground? I do have a 2 acre fish pond in my backyard and told the wife to swim there.That flew like a load of crap. The wife wants a pool bad,but also I want another boat that I been eyeing. Now that Billy Freemen is building his boats out of fiberglass, I want one bad!

[PatrickG]

I just got finished researching all of my options on my pool. I am by no means a pool expert, but it doesn't seem like it will be hard to patch your problem area. Your pool holds a tremendous amount of weight. It doesn't seem like your diving board would be causing the cracking. It seems like the weight of the water would be the culprit. From a construction standpoint I would take an air chisel and hammer out enough of the concrete to put a piece of #4 rebar tying the concrete on each side of the crack together. After you do that set the pieces of number 4 with epoxy and fill it all in with concrete. After the concrete sets up put fresh gunite over it and fill her up?

Illustration:

[Erie Skipper]

great input and thanks

[jlbauza]

Fishfighter,

I feel your pain. We sold our boat, family wants a pool and I would like another boat eventually. C'mon magic numbers!