This site used to be really busy and visited a lot by quite a few pool experts and builders, as well as homeowners with experience. It would seem, by a lot of really old threads being at the front, that it is not very active anymore. If you don't get your question answered here, you might want to try Troublerfreepool.com It is the only other place I know of. I just came in the pool section a few days ago, from the bathroom forum, just to see what was going on over here.

Thank you. Appreciate the advice!

Salt is extremely corrosive to all materials with the exception of porcelain and glass. I refuse to do a salt water pool unless my clients sign a waiver. Porcelain or glass would be a good choice for the waterline. Cleaning and then sealing the stone on the raised beam will help. Even if you use a good sealer that says it will last for 10 years don't always take the manufactures word. Some 10 year sealers haven't actually been out for 10 years yet. They do lab testing that simulates time. I would keep on a sealing regimen every two years. I have used a 10 year sealer and within a year the salt started to pit the travertine coping. Luckily I had warned my client about it so the expectation was set but that tells you how corrosive salt is. A good quartzite stone very durable. Some stone may look like quartzite but may have sandstone or limestone in the mix. A picture would be helpful. Hope this answers helps.

You might contact a pool builder that does a lot of salt pools and see what they recommend. Pretty much all pool builders here in Florida build salt pools - nobody builds new chlorine pools for single family homes anymore that I found. (Yes, I know that a salt pool is a chlorine pool - you know what I mean.) We haven't had any corrosion but I have standard ceramic tile for the waterline and Artistic Pavers coping and deck all around.

Did you get this resolved? If you had tiles put in, did the pool have to be drained completely?