Building better soundscapes

National Gypsum Company recently hosted an NGConnects Webinar that dove deep into the world of acoustics in construction. Led by Thad Goodman and Scott Hughes, National Gypsum Construction Design Managers, the session explored how acoustically enhanced gypsum boards can significantly improve sound performance in wall assemblies across a variety of building types.

Participants earned 1.0 LU|HSW credit and left the webinar knowing how to:

• Define the key acoustical concepts and terminology including Sound Transmission Class (STC), Airborne Sound and Decibels (dB).
• Discuss current and proposed code requirements for STC ratings.
• Describe existing and innovative sound reducing solutions in terms of efficiency and practicality.
• Discuss the elements that affect STC ratings and what measures can be taken to improve STC ratings in wall assemblies.
• This article captures the highlights and practical insights shared during the webinar. If you missed the live event, you can still watch it here on demand to earn 1.0 LU|HSW credit.

Why acoustics matter

Sound isn’t just a background element — it shapes how we experience a space. Poor acoustics can lead to distractions, stress and even reduced productivity. On the flip side, well-managed sound can enhance comfort, privacy and overall satisfaction.

From residential buildings to hospitals, the demand for high-performance acoustic solutions is growing. And gypsum boards designed for noise control are stepping up to meet that need.

The power of high-STC wall assemblies

Goodman and Hughes focused on Sound Transmission Class (STC) — a key metric for measuring how well a wall assembly blocks airborne sound. Higher STC ratings mean better sound isolation, and acoustically enhanced gypsum boards are engineered to deliver just that.

Here’s where they shine:

• Multi-family housing: Reduce noise between units and improve tenant satisfaction.
• Commercial offices: Support focus and confidentiality in open-plan or private spaces.
• Schools: Create quieter classrooms that support learning.
• Healthcare facilities: Protect patient privacy and promote healing environments.

Choosing the right solution

Not all sound solutions are created equal. Selecting the right product depends on your project’s unique needs — whether it’s a luxury hotel aiming for an STC of 55-plus, or a residential development targeting STC 50.

Pro tip: Work closely with acoustical consultants early in the design phase to ensure your assemblies meet performance goals without overbuilding.

Installation makes the difference

Even the best materials can fall short without proper installation. Our experts emphasized the importance of these best practices when installing acoustic wall assemblies.

• Sealing flanking paths such as gaps around outlets or penetrations
• Using non-hardening acoustical sealants
• Incorporating RSIC clips or RC1 channels to decouple wall layers
• Considering damped panel products that include viscoelastic polymers to absorb vibrations

These techniques help ensure real-world performance aligns with lab-tested results.

Balancing performance and cost

Achieving high STC ratings doesn’t have to mean thicker walls or higher costs. Damped gypsum panels, for example, can reduce the need for multiple layers while maintaining performance — saving both space and labor.

Connect with National Gypsum to deepen your knowledge

The effect of poor acoustics is undeniable. As expectations for comfort and privacy continue to rise, acoustically enhanced gypsum boards offer a smart, effective way to meet those demands.

Whether you’re designing a quiet retreat or a bustling workplace, noise control should be part of the conversation from day one. And with the right products and practices, it’s easier than ever to build spaces that sound as good as they look.

Have questions or want to explore acoustic solutions for your next project? Reach out to a National Gypsum Construction Design Manager for personalized guidance and support.