Sound Control for Flooring applications in multi-family construction can be a confusing topic. With many different products available and performance claims made, it is difficult to separate fact from marketing hype. To make an intelligent decision about what type of product to specify or install, it is important to understand what is required by the Building Code and what the performance standards of STC and IIC actually mean.
In multi-family construction in the United States, there are minimum IIC and STC values that a floor/ceiling assembly (living space over living space), must achieve. The Uniform or International Building Code (U.B.C. / I.B.C.) call for a minimum 50 IIC and 50 STC values. Consult your local Building Department, Homeowners Association or Property Manager for the exact requirements for your installation.