Quiet Barrier™ LD Soundproofing Composite (w/PSA)

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Quiet Barrier™ LD Soundproofing Composite (w/PSA)

Soundproof Cow’s Quiet Barrier™ LD Soundproofing Composites are designed for industrial applications involving large open spaces. Products arrive with a Quiet Barrier™ membrane and polyurethane foam layers to prohibit loud sounds from entering or escaping your facility. This is a unique solution, as the 1/16 in., 1/2 lb. barrier weakens the energy of sound, while the polyurethane foam layers act as decouplers to limit vibrations that pass through walls and ceilings.

Our LD soundproofing composites appeal to industrial professionals as well as those in search of DIY acoustic solutions. As this product comes with pressure-sensitive adhesive (PSA), you can simply peel away the liner and stick the adhesive backing to place soundproofing composites exactly where you need them. The Quiet Barrier™ LD Soundproofing Composite has a flammability rating of UL94 HF-1, which makes your purchases ideal for compressor enclosures, equipment rooms and other construction projects.

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

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12 in stock

Usually ships in 1-3 business days

AMI is breaking out her favorite hat for Cincow de Mayo. We will be getting ready for summer with 10% off all Quiet Barrier Products through Moomorial Day!

Use Promo Code: moo440
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Weight 21 lbs
Dimensions 4 ft. x 8 ft.
Thickness 9/16 in.
Weight 17 lbs.
Coverage 32 sqft.
Quantity 1 Sheet
STC Rating 20
NRC Rating .25
Availability Usually ships in 1-3 business days

Quiet Barrier™ LD Soundproofing Composite with PSA is the ideal soundproofing solution for Do-It-Yourself-ers and construction experts alike. This thin soundproofing composite with PSA is affordable, versatile, easy to install and features amazing sound-blocking power.

It starts with the 1/16-inch thin soundproofing material with PSA, powerful enough to block most sound from getting in or out. That soundproofing power is enhanced by a full inch of acoustical-grade polyurethane foam. Together, they create a soundproof composite that protects your privacy and frees you from annoying or even harmful external noises. The polyurethane foam also serves as a buffer between the barrier membrane and the mounting surface, so vibration effects do not get through and compromise the barrier’s sound-blocking ability.

Simple Installation, Even for First-Timers

If you’ve never tried a sound control solution before, the Quiet Barrier™ Soundproofing Composite with PSA is the perfect one to start with. You’ll be amazed at how quickly and easily you control sound wherever you choose to install it.

And if you’ve never installed soundproofing before, you’ve picked the perfect product, thanks to the PSA feature, a strong-bonding peel-and-stick adhesive that means all you have to do is remove the film backing and stick it in place. With this soundproofing composite, installing is as easy as can be. You can have an entire space soundproofed the day your order arrives.

To see for yourself all the amazing sound control options you have with the Quiet Barrier™ LD Soundproofing Composite with PSA, order some now.

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 Quiet Barrier™ blocks sound while its flexible nature dampens sound energy. The Acoustic foam acts as a decoupler, structurally isolating the heavy barrier layer from the construction assembly, ultimately increasing the sound blocking performance.

Low Profile — Quiet Barrier™ soundproofing composites range in thickness from 9/16 inch to 1 ¼ inch, saving valuable square footage.

Variety — Quiet Barrier™ soundproofing composites are available in a variety of weights and thicknesses. Quiet Barrier™ soundproofing composites are available with an optional “peel and stick” pressure-sensitive adhesive (PSA).

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

Proven History — Over 1 Million square feet of Quiet Barrier™ soundproofing composites are installed in projects nationwide.

Flammability — Quiet Barrier™ Soundproofing Composites contain 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.


Great for the Construction Industry:

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

Great for the Automotive Industry:

  • Trunk Liners in Automobiles
  • Floor Pan Liners in Automobiles

Great for the Marine Industry:

  • Cabin Wall Liner
  • Hull Liners

Which Quiet Barrier™ Soundproofing Composite is right for me?

Quiet Barrier™ Soundproofing Composites can be added to a variety of existing wall constructions to improve the sound blocking performance of the structure. Choose the right Quiet Barrier™ Soundproofing Composite based on the type of noise you are trying to prevent from entering or leaving the space. As a rule, the thicker and heavier the Quiet Barrier™ Composite, the better it will be at reducing sound transfer. The thinner Quiet Barrier™ Composite products perform well when trying to deter common noises with average decibel levels. The thicker Quiet Barrier™ Composite products perform well when trying to deter common noises with high decibel levels. In essence, the louder the sound you are trying to stop, the thicker the product needs to be. First determine how much sound you need to stop, and then choose the appropriate product.

How Quiet Barrier™ Soundproofing Composites work

In essence, Quiet Barrier™ Soundproofing Composite products block the transmission of noise from one area to the next. The “noise source” hits the barrier and is reflected back into the room or space of origin. See figure 1. Typically, the noise is not muffled or absorbed in any way, which means that the decibel level within the source room remains the same or is increased. The difference between the source noise and the transmitted noise is the sound transmission loss.

Quiet Barrier Specialty Composite Reinforced Mylar Facing Diagram

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.

Product Availability

Special Order Sizes and Thicknesses are available.

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

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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