Q:We are getting ready to repaint our home office. The walls and ceiling were cracked during the 1989 quake and poorly patched before we moved in. We had the roof redone this summer, and the banging ...

Plaster, a decorative wall coating of lime, sand, and sometimes fibers, has been around since the beginning of time—and so has plaster repair. Although subject to cracks and bubbles, it's a durable ...