Designing for Better Acoustic Performance
Acoustics play a critical role in how people experience a space. From open offices and classrooms to healthcare, hospitality, and multifamily environments, managing sound can improve concentration, comfort, privacy, and overall occupant wellbeing. Flooring is one of the few building materials that contributes to both aesthetics and acoustic performance, making it an important part of the design process.
More Than a Test Score
Acoustic ratings like Sound Transmission Class (STC) and Impact Insulation Class (IIC) provide valuable insight into how flooring systems perform, but numbers alone don't tell the full story. Real-world acoustic performance depends on the complete floor assembly, installation methods, and how a space is ultimately used.
Comparison of Acoustic Metrics
| Metric | Sound Transmission Class STC | Impact Insulation Class IIC |
|---|---|---|
| What it measures | Airborne sound transmissionAirborne sound transmission loss gauged in decibels (dB) | Structure-borne impact noise: impact sound isolation in decibels (dB)These are the heavy footfall “thuds” that travel through structure—what occupants often describe as “booming” or “banging.” |
| Where it’s used in buildings | Upper floor installations; STC is a single-number rating for airborne sound transmission through any building element that separates two spaces. | Sound transmission through floor/ceiling structures. |
| Limitations/ Misunderstandings |
Not suitable for impact noise; Applies to Walls, floor/ceiling assemblies, doors, windows, demising partitions, operable partitions and glazing systems. | Doesn’t assess airborne sound. |
Flooring Designed to Perform
Different flooring types contribute to acoustic performance in different ways. Carpet with attached cushion typically delivers the strongest overall acoustic performance, while resilient flooring solutions such as LVT and rubber offer varying levels of sound isolation depending on construction and thickness. Understanding these differences helps designers balance performance, aesthetics, durability, maintenance, and budget.
Our portfolio offers solutions across flooring categories, backed by third-party testing and technical expertise to help identify the right product for every application. Whether the project prioritizes occupant comfort, code compliance, or design flexibility, Mohawk Group provides the resources to support better acoustic outcomes.
