The mortar in my old stone foundation is getting very bad and is in need of repair. How and what is the best material to parge the walls. And what additives do I need to put in to make it adhere to the cobblestone. I know I need to remove all loose mortar and clean well.
One important note is that one of the walls is starting to seep water. What can I do to waterproof the wall. Is parging enough?