IIC & STC Ratings for Floor-Ceiling Assemblies

Easily filter and compare floor-ceiling assemblies by IIC rating, STC rating, framing type, finished floor, and soundproofing material to get the best design for your project.

Wall Assemblies Floor-Ceiling Assemblies

FAQs

An IIC rating is a single number that indicates how well a floor-ceiling assembly reduces impact noise (often footsteps). Building code requires at an IIC of at least 50, but higher-end new construction will typically seek to be 55 or even 60+.

Yes! We also have a list of wall assemblies with STC ratings.