Re-doing a concrete bottom pool that has stainless sides/ no liner, NEED sealant for the concrete/wall joint? soneone told me to use a vulcan product? maybe vulkem? not sure of the spelling? Also where the stainless walls join there has been a sealant added there as well....i assum they must have been leaking.....sooo is there a sealant for a caulk gun that will work in both these locations?

thanks