What Is Soundproofing and How Does It Work?
SOUNDPROOFING 101
Soundproofing, Made Simple
The result?
• More peace and quiet
• Better focus and sleep
• Improved comfort in homes, studios, offices, and vehicles
Understanding Noise
Learn the difference between airborne noise and impact noise
Airborne Noise
AIRBORNE NOISE: Sound that travels through airwaves. Can be transmitted from room to room, or from floor to floor of a building.
Examples of airborne noise:
Voices, music, tv, traffic, road noise
Impact Sound
IMPACT NOISE: Sound that is made from two solid materials impacting. This sound is transmitted through solid surfaces.
Examples of impact noise:
Footsteps, door slam, hammer, knocking
Understanding STC Ratings
How Much Sound Does It Really Block? (STC Explained)
STC (Sound Transmission Class) is a standard rating that measures how well a material or assembly blocks airborne sound. The higher the number, the more sound it blocks.
25–35 - Moderate - Basic interior wall
40–50 - High - Quiet bedrooms, offices
50+ - Professional - Studios, theaters, clinics
EnviroFlex™ MLV has been lab-tested to improve STC ratings when installed correctly in walls, ceilings, or vehicles. When used in a standard wall assembly of 2x4's, drywall, and insulation, EnviroFlex MLV can help to achieve STC ratings of 55+.
The Acoustic Barrier That Works:
EnviroFlex™ MLV
Mass Loaded Vinyl (MLV) is a dense, flexible material that blocks airborne sound by adding mass—without adding bulk. It’s easy to cut, easy to install, and incredibly effective.
Benefits of EnviroFlex™ MLV:
- - Blocks sound through density, not thickness
- - Made from 99% recycled content
- - Installs under drywall, plywood, or panels
- - Ideal for homes, offices, vans, trucks, and more
Still Have Questions About Soundproofing?
Our team is here to help you choose the right materials and installation method. Whether you’re a first-time DIYer or a contractor planning a large-scale build—we’ve got your back.