How You Know You’re Living in an Old House

Plaster and lath in the closet, covered by gypsum board and now filled with insulation.

Note to pet owners: be sure to cover the exposed wall with gypsum board so the nosy cats do not jump into the fiberglass insulation. But, make sure you can remove the board so you can show off the plaster and lath (even though it’s mostly lath now).