Why STC Doesn’t Tell You Everything
March 1, 2005
The sound isolating properties of wall and floor/ceiling assemblies are often presented using a single number rating system, the Sound Transmission Class (STC). The STC rating of a partition is determined by following an ASTM Standard which compares the sound
Residential Sound Isolation
June 1, 1994
We frequently get calls from owners and tenants who wish to improve the sound isolation between apartments and condominiums, particularly in older units. The call often begins with, “I want something I can spray on to the wall to soundproof


