Hollow-Sounding Plaster Walls: Tap Maps, Key Failure Patterns, and Targeted Stabilization
Introduction Hollow-sounding plaster walls hide voids behind the plaster, so tapping sounds hollow. This usually means the lath or backing has failed or separated from the surface. Understanding this helps you map where stabilization work is needed. To map the problem, tap in several spots and note where the sound is the weakest. Look for […]










