The NPS preservation briefs (ex. historic masonry [1]) are fantastic, and like the grandparent, document knowledge that is largely lost in practice. [1] https:

The NPS preservation briefs (ex. historic masonry [1]) are fantastic, and like the grandparent, document knowledge that is largely lost in practice. [1] https://www.nps.gov/tps/how-to-preserve/briefs/2-repoint-mortar-joints.htm#mortarmatch https://www.nps.gov/tps/how-to-preserve/briefs/2-repoint-mor...