Joel_BC
Super Self-Sufficient
Here’s some how-to information about replacing mortar that is deteriorating. Not a video (my apology), but still easy to learn from. Could save people money when you do it yourself rather than hire someone to do it. The process and techniques involved are presented in relation to brick structures, but I can see how the approach can be adapted to mortared stone walls and other mortared stone structures.
https://www.familyhandyman.com/masonry/masonry-how-to-repair-mortar-joints/view-all