What Is STC Rating and Does It Really Matter for Modular Walls?
STC (Sound Transmission Class) is a standardized rating that measures how well a wall, partition, or assembly reduces airborne sound - such as speech, music, or office noise. The higher the STC rating, the better the wall is at blocking sound from passing through.
STC ratings are calculated based on how well a wall assembly blocks sound across a range of frequencies. In practical terms:
- STC 30–35: Normal speech is easily heard and understood
- STC 40–45: Speech is audible but not clear
- STC 45–50: Loud speech is faint and difficult to understand
- STC 50+: Strong speech privacy with minimal sound transfer
Get the STC Rating Guide for Your Office
Understand what it takes to build an acoustic environment that actually performs.
In this guide, we focus on STC ratings and recommended levels by space but that’s only part of the story. We also break down the key factors that must work together to deliver real speech privacy.
How Much Do Modular Walls Cost?
When budgeting for modular walls, it’s essential to consider both the initial investment and the long-term benefits. Here’s how the costs break down:
Typical Costs
The cost of modular walls can vary significantly based on your choices. However, our experience suggests budgeting $500 to $600 per linear foot for most systems.
Factors That Affect Cost
- Materials: Solid panels, subdivided panels, or a mix of finishes can impact pricing.
- Hardware: The style and materials of door handles and other fixtures.
- Ceiling Height: Taller walls require more materials, increasing cost.
- Installation Complexity: Difficult access points or distant unloading zones can raise labor costs.
How to Choose the Right Modular Wall System
1. Acoustic Performance
Modular walls reduce sound and improve speech privacy, but they are not fully soundproof. Look at STC ratings and match performance to how the space will be used.
2. Flexibility
Choose a system that can be reconfigured or relocated as your workplace evolves. This is where modular walls provide the most long-term value.
3. Power and Technology Integration
Some systems allow for built-in power, data, and AV integration. Planning for this upfront avoids costly changes later.
4. Design and Materials
Options like glass, solid panels, or mixed materials impact privacy, natural light, and overall workplace design.
5. Timeline and Installation
Modular walls install faster than drywall, but timelines vary based on customization, lead times, and project size.
Not sure what to prioritize? We can help you evaluate your space and recommend the right system.
