What Types of Rocks are Salt Resistant?

[ntermini]

I need to repair the waterline area of my swimming pool. It leaks and looks like Crud. I'm going to add a SWG, but before I do, I need to fix this area.

I'm thinking of using Portland concrete with a polymer to help with adhesion. If I add some more stone to the facade, would anyone know what type works best with salt water?

 

[Melt In The Sun]

What is behind that mortar? Looks like a cinnamon roll.

It looks like the stone has held up reasonably well, so you may be able to just chip out the mortar and redo it. Going over the top of something that is crumbling won't work for very long.

 

[DBfan187]

looks like he filled in the holes with expanding foam

 

[ntermini]

looks like he filled in the holes with expanding foam

"I" did not do that. It was the PB who re-plastered the pool about three years ago when we bought the property. Besides, I think that's a croissant in there, not a cinnamon roll.