Repairing stone masonry or rebuilding it
If most of the stones are sound and the trouble is a few loose pieces or worn mortar, a repair usually makes sense, and that's the work we're best known for, getting new mortar and stone to sit right next to the old. When water has been getting behind veneer for a while, or a wall is leaning or cracked clean through, patching only hides it, so I'll tell you when taking a section down and resetting it is the honest answer. If the crack starts below the wall, we look at foundation repair first.

