When we started renovating our building the roof had caved in on one side of the building. We were able to save and restore about 40 percent of the original lath and plaster walls (on the side where the roof hadn't collapsed), but many walls were too damaged by water and mold to be saved. It's a shame, because they were beautiful, even in in their disintegrating state. Here, fragments of paint and crumbling wallpaper hint at what was once there.