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.
Floor-Ceiling IIC Calculator
Quickly find floor-ceiling assemblies to meet your soundproofing goals!
Assembly Details
STC
IIC
HIIC
Filters
Structure
IIC Rating
STC Rating
Soundproofing Material
Finished Flooring
FAQs
What is an IIC Rating?
What is an IIC Rating?
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+.
Do you have a list of wall assemblies as well?
Do you have a list of wall assemblies as well?
Yes! We also have a list of wall assemblies with STC ratings.