Quiet Barrier™ Specialty Composite w/PSA

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Quiet Barrier™ Specialty Composite w/PSA

Industrial professionals, mechanics and those working around loud sounds rely on Soundproof Cow’s Quiet Barrier™ Specialty Composite to make working conditions tolerable. This is a four-layer soundproofing composite engineered for use around heavy machinery. Position materials on walls, corners and ceilings to block sounds coming in and out of your workspace. This soundproofing solution was designed with construction, manufacturing and marine industries in mind, as its exterior materials offer outstanding heat resistance.

The Quiet Barrier™ Specialty Composite is durable and difficult to tear. The first layer of our specialty soundproofing composite consists of cleanable, fiber-reinforced Polyester Film followed by a second layer of acoustic foam for dampening low-, mid-range and high-pitch frequencies. We incorporate our Quiet Barrier™ LD solution as the third layer for sound energy control. The last layer of the specialty composite is a decoupling foam to separate materials from the mounting surface. This product includes pressure-sensitive adhesive backing for easy installation.

This product is no longer available in the State of California. Please contact us for approved solutions. 1-866-949-9269


132 in stock

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Weight 22 lbs
Dimensions 4 ft. x 4.5 ft.
Thickness 1 5/16 in.
Weight 18 lbs.
Coverage 18 sqft.
Quantity 1 Sheet
STC Rating 24
NRC Rating .7
Availability Usually ships in 1-3 business days

Soundproofing Composite

Quiet Barrier™ Specialty Composite is our premier sound blocking product that can be used in almost any situation. Its durable polyester film facing means it resists tearing and extreme heat while being easy to wipe clean and enhancing the product’s soundproofing capabilities. The Quiet Barrier™ Specialty Composite’s ability to resist the elements and other harsh conditions make it ideal for applications in areas such as construction, marine industries, automotive plants and anywhere one would use heavy machinery.

Beneath the polyester film layer is a powerful soundproof barrier sandwiched between two pieces of acoustic foam. The first layer is a thick acoustic foam able to absorb frequencies high, mid and low. Then comes our popular Quiet Barrier™ LD soundproofing product to block most sound energy.

We follow this with the final foam layer, which isolates the barrier from the mounting surface, preventing vibrational sound energy from reaching the barrier and interfering with its sound blocking integrity. The result is a nearly impenetrable sound barrier for your:

  • Warehouse
  • Plant
  • Office
  • Wherever you choose to apply it

How Quiet Barrier™ Specialty Composites Work

In essence, Quiet Barrier™ Specialty Composite products block the transmission of noise from one area to the next. The sound from the “noise source” hits the Polyester Film facing and high frequencies are reflected back towards the noise source. Some of the sound is then absorbed by the acoustic foam. The sound that penetrates the acoustic foam layer is then blocked by the decoupled barrier layer and reflected back into the room or space of origin.  The difference between the source noise and the transmitted noise is the sound transmission loss.

Easy Installation With Peel-and-Stick Backing

When you do apply this product, the Quiet Barrier™ Specialty Composite with PSA makes installation incredibly easy. The PSA peel-and-stick adhesive backing means you just peel off the protective film and stick it into place. It fits virtually anywhere and, once installed, will start blocking sound immediately. For convenience, durability and pure sound blocking power, the Quiet Barrier™ Specialty Composite with PSA is the sensible choice.



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This product is no longer available in the State of California. Please contact us for approved solutions. 1-866-949-9269



Triple Soundproofing Function — The mass of the Quiet Barrier™ layer blocks sound while its flexible nature dampens sound energy. The thicker of the two layers of Acoustic foam acts as a sound absorber, decreasing ambient reflected noise. The thinner layer of acoustic foam acts as a decoupler, structurally isolating the heavy barrier layer from the construction assembly, ultimately decreasing vibration and increasing the sound blocking performance.

Heat Resistant — Quiet Barrier™ Specialty Composite has a fiber-reinforced Polyester Film facing that not only reflects high frequencies but also reflects heat back towards the source. This product is our best performing sound blocking material in exposed locations with above-average temperatures.

Durable — The Polyester Film facing provides a cleanable, tear-resistant surface for applications that may come in contact with oils or grease. Once punctured, the embedded fibers will prevent additional tearing or damage. The acoustic foam and barrier layers are thermally bonded, providing a much stronger, longer-lasting bond over traditional adhesives.

Low Profile — Quiet Barrier™ Specialty Composite has a thickness of 1 1/4 inch, saving valuable square footage. Quiet Barrier™ Specialty Composite is used in many equipment enclosures where space is tight.

Ease of Installation — Quiet Barrier™ soundproofing composite is available with an optional “peel and stick” pressure-sensitive adhesive (PSA). Simply peel the silicone coated paper backing and place the product where it is needed.

In-stock — We stock a large amount of Quiet Barrier™ Specialty Composite in all advertised sizes and configurations. Most products are shipped the same day they are ordered and arrive at your project in three business days.

Customization — We will create a custom Quiet Barrier™ Specialty Composite for your application. Custom profiles, shapes and sizes can be quoted upon request. For custom Quiet Barrier™ Specialty Composites there are minimum order quantities, please contact our Acoustic Consultants for more information!

Flammability — Quiet Barrier™ Specialty Composite contains polyurethane foam that has a flammability rating of UL94 HF-1. Before choosing this product, be sure the flammability rating passes your local building code for exposed materials.

Sound Test

See how our Quiet Barrier™ Specialty Composite produced great results for a happy customer!

Product Availability

Also available in Quiet Barrier™ Specialty Composite

Special Order Sizes and Thicknesses are available.

For details, call 1-866-949-9COW.


Construction Industry:

  • Air Conditioning Unit Enclosures
  • Computer and Server Rooms
  • Compressor Enclosures
  • Equipment Rooms and Enclosures
  • Generator Enclosures
  • HVAC Cabinets
  • Industrial Facilities

Automotive Industry:

  • Hood and Trunk Liners in Automobiles

Heavy Equipment Industry:

  • Engine Compartment liners
  • Cab Liners
  • Floor liners
  • Hood and Trunk Liners

Marine Industry:

  • Engine Compartment liners
  • Hatch Cover liners
  • Hull Liners


Polyurethane Foam Warning

All Polyurethane Foams, including Combustion Modified Foams, will burn. Do not expose to any flame source. Once ignited, they can produce rapid flame spread, intense heat, dense smoke and toxic gases causing death. Warnings should be given to your employees and or customers. Test data does not necessarily reflect a foams performance under actual fire conditions. Before purchasing any foam, be sure to check with your local code officials to confirm the required flammability rating of exposed materials for your area.

Cautions and Limitations

Before applying this product all surfaces must be dry and clean, free of any grease or oil.

Customer Reviews

Average Customer Ratings: 4.8 (34 reviews)

The times I talked with you on the telephone and corresponded through email you have been very helpful and efficient. I would highly recommend Soundproofcow.com to anyone!

– S. Cimino, PA

I have emailed a lot of different manufactures and I have to say your customer service is head and shoulders above all of them. I emailed your company at about 9pm my time and when I woke up the next morning you had already answered my question and then the follow up was a few hours later. I am impressed. Thanks a lot for the quick turn around!

– E. Gustafson, NV

I just wanted to send a quick thank you for your rapid response and helpfulness. I very much appreciated it. You have been responsive in every way all through the process. It has been a pleasure doing business with you and your company.

– T. Alexander, CA

I just wanted to let you know that in the end, sealing the air spaces on this door worked just fine and took care of the problem.

I really appreciate you taking so much time to share your expertise with me, and in particular recommending I try the simpler solution before investing in more expensive noise barriers. That is a big credit to you and your business.

– Mike

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If you need a quote quickly and would rather talk to a warm body, then dial 1-866-949-9269. No pushy sales guys…promise.

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