Custom Acoustical Barriers

Polyfill products are based on mineral filled, ethylene co-polymer formulas that impede the transmission of sound waves, thereby reducing noise within a given environment. This acoustical barrier effectively reduces noise on its own, but takes on enhanced acoustical properties when combined with sound absorbing materials. The flexible and customizable nature of our acoustical barrier allows us to provide customer specific solutions to various industries.

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By helping to prevent noise intrusion into a vehicle's interior, Polyfill’s barrier materials contribute to the modern car's nice, quiet ride. Our composite constructions, incorporating both barrier and absorber materials, are engineered to block and reflect high-energy, low-frequency road noise and airborne sound across a wide frequency range, and can be tuned for custom automotive applications.


Heavy Truck

Noise reduction is of utmost importance in heavy truck and commercial vehicles, given the sheer amount of time drivers spend in their cabs. Whether is structure-borne or airborne, Polyfill’s acoustical barriers can reduce the noise drivers experience when traveling, helping to increase driver productivity and safety.

Common Uses for our products include:

- Carpet
- Hood and Dash Insulators
- Fender Liners
- Trunk Systems and Tunnel Covers

- General Motors GMW 14171
- Ford WSS-M5G52-B
- Chrysler MSDC 259
- Toyota TSL5705G-4
- BMW DIN 53504
- Mercedes DBL 5972.40


0.5 lbft2 EVA STC Test Report

0.75 lbft2 EVA STC Test Report

1.0 lbft2 EVA STC Test Report

1.5 lbft2 EVA STC Test Report


We are excited to announce the launch of Sonoblock-FR—our brand new Class A Fire Rated acoustical barrier product line. Sonoblock-FR is a custom formulated product designed to meet fire retardant specifications required for industrial and commercial application building materials. Not only is Sonoblock-FR an effective noise solution and 100% recyclable like all of the Polyfill products, but it also passes UL and ASTM flammability testing. It is the optimal acoustical barrier for all applications requiring fire safety.

Sonoblock-FR Technical Datasheet

Sonoblock-FR Safety Datasheet

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Building Materials & Room Acoustics

In the industrial and construction related fields, Sonoblock-FR is optimal for many applications: wall and floor insulation, oil delivery-line sound reduction, and recording studios, among others. Our product is highly effective in isolating noise to a specific area or stopping its transmission into another, while simultaneously acting as a fire safety aid.


HVAC & Appliance

Polyfill's standard products, as well as Sonoblock-FR, are useful for noise reduction in the realms of HVAC and general appliances. They can be used to quiet ductwork, air vents, air conditioning units and more.

Common Uses for Sonoblock-FR include:
Flammability Testing:

- Wall Insulation
- Floor Insulation
- Room Acoustic Panels
- HVAC Noise Reduction

- UL94 HB Pass
- UL94 V-0
- UL723
- ASTM E84 Class A+

UL723 ASTM E84 Sonoblock-FR 0500 Test Report

UL723 ASTM E84 Sonoblock-FR 1000 Test Report

UL94 HB Sonoblock-FR 0500 Test Report

UL94 HB Sonoblock-FR 1000 Test Report

UL94 V-0 Sonoblock-FR 0500 Test Report

UL94 V-0 Sonoblock-FR 1000 Test Report

Additional Markets Served


Power Sports




Lawn & Garden