This bathroom is 100 years old. Yes, 100. The pipes were 40 years past end of life, the walls were 3 inches of masonry atop metal lathe. The home is a double brick home – no studs. This was a messy, messy tear out. Tons (literally) of plaster, masonry, and building materials. And while the existing structure was sound, much of it was crooked, warped, and twisted after a century.