How long must I wait before I can add salt to my newly resurfaced pool?

“NO SALT SHOULD BE ADDED FOR 28 DAYS”! National Plasterers Council, NPC Start Up Card, September 2012 edition. Some salts have anti caking agents that can stain a new pool finish, prompting some to wait 45 days or more from the day of resurfacing. The longer you wait, the more it allows the new pool finish time to cure properly and thoroughly, to prevent staining from salt.