Due to the current world events we are working remotely to protect our staff. If you have any questions please email or leave a message at 1-866-949-9269 and we will get back with you as soon as possible. We greatly appreciate your patience.


Quiet Barrier™ MD Soundproofing Material (Sheet)

9963 in stock



The Quiet Barrier™ MD soundproofing sheets are our medium thickness sheets. They are 1/8 inch thick and weigh 32 pounds per 4-by-8-foot sheet. This high-density, nonporous material is one of our most popular soundproofing solutions because of its ease of use and tremendous effectiveness.

Quiet Barrier™ MD soundproofing sheets provide quality sound control in two ways. The barrier layer blocks the transmission of airborne sound like voices and outdoor noises, while the foam layer isolates and protects the barrier and dampens vibratory sound, such as the type caused by impacts or construction work. The result is a clean, ungarbled sound in any room where you choose to install it.

Quiet Barrier™ MD is environmentally friendly, so you’ll have no problem handling it, and can be cut to any size to ease your installation. If you choose the peel and stick PSA option, installation is even easier — just cut your pieces, peel off the backing and stick it in place.

Use Quiet Barrier™ MD Soundproofing sheets anywhere you need to reduce outside noise or make inside noise cleaner and clearer. These sheets are suitable for such situations as:

  • Home recording studios
  • Commercial recording studios
  • Children’s rooms
  • Office conference rooms
  • Restaurants

These sheets are affordable and work brilliantly to control sound. You won’t find a better value anywhere when it comes to soundproofing solutions.



* This product is not eligible for promotional offers.


Dimensions 4 ft. x 8 ft.
Thickness 1/8 in.
Weight 32 lbs.
Coverage 32 sqft.
Pressure Sensitive Adhesive No
Quantity 1 sheet
STC Rating 27
Availability Usually ships in 1-3 business days
Technical Data Product Data Sheet
Installation Step-by-Step Instructions

* This product is not eligible for promotional offers.


Quiet Barrier™ HD (w/PSA) soundproofing material (1/4 in. 2 lb./sqft.) 20 ft. roll is a high density, non porous material that exhibits a non-resonant quality due to its flexible nature, and is one of our most popular soundproofing products. The Quiet Barrier™ family of products control noise by blocking the transmission of sound energy and damping vibrations caused by sound energy.

Product Availability

Special Order Sizes and Thicknesses are available.

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

Features / Benefits

Dual soundproofing function — The mass of Quiet Barrier™ blocks sound while its flexible nature dampens sound energy, giving improved acoustic performance over competitive rigid products.

Value — Pound for pound, Quiet Barrier™ products have better noise reduction characteristics than steel and other building materials.

Low Profile — Valuable square footage is maximized. Quiet Barrier™ MD is only 1/8 in. thick and Quiet Barrier™ HD is 1/4 in. thick saving space and money.

Variety — Quiet Barrier™ soundproofing products are available in a variety of lengths and widths. Also, some Quiet Barrier™ products are available with a “peel and stick” pressure sensitive adhesive (PSA). Custom shapes and sizes available upon request.

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

Proven History — Over 1.5 Million square feet of Quiet Barrier™ soundproofing products have been installed in projects nationwide.

Made in the USA Made of 15% Recycled Materials

*Made of 15% Recycled Materials


Great for the Construction Industry:

  • Broadcast Studios
  • Commercial Recording Studios
  • Commercial Theaters
  • Homes Theaters
  • Multi Family Dwellings
  • Offices
  • Recording Studios
  • Restaurants
  • Single Family Dwellings

Great for the Automotive Industry:

  • Trunk Liners in Automobiles
  • Floor Pan Liners in Automobiles

Great for the Marine Industry:

  • Cabin Carpet Underlayment
  • Cabin Wall Liner
  • Hull Liners

Which Quiet Barrier™ soundproofing product is right for me?

Quiet Barrier™ can be added to a variety of common wall / ceiling constructions to improve the sound blocking performance of the structure. Choose the right Quiet Barrier™ product based on the type of noise you are trying to prevent from entering or leaving the space. Quiet Barrier™ products perform well when trying to deter common noises with average decibel levels. These noises can be generated from voices, TV’s and stereos. If noise levels are higher than usual, typically from loud stereo systems, home theater or recording studio environments, then other products used in conjunction with Quiet Barrier™ may be necessary.

If you are trying to prevent common conversations or voices from entering or leaving a space, then choose Quiet Barrier™ MD. If you are trying to prevent TV and stereo noise from entering or leaving a space, then choose Quiet Barrier™ HD.

How Quiet Barrier™ works:

Quiet Barrier™ 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 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 Diagram

Acoustic Data – Sound Transmission Loss

frequency 125 250 500 1K 2K 4K STC
(dB) 14 14 23 29 34 37 27

Installation Details

Tools Needed: Drill, Level, Utility Knife, Chalk line, Hammer or Pneumatic Roofing Nail gun and Compressor, Tape Measure, Pencil

Materials Needed: Acoustical Sealant, Quiet Barrier™ Tape, 1.25 inch Roofing nails (or 1.25 inch drywall screws)

Installation PDF

Quiet Barrier™ Install

I was so relieved to find out there was a solution that I wouldn’t have to tear down the drywall. When I called in and talked to one of the guys there they told me I would be able to put the Quiet Barrier vinyl over top of the drywall that was already there, and then I could put another new layer of drywall over top all of that. It has been a great improvement since it was put in.
J. Dalby, AZ

I had to admit I’m a little bit surprised at how well the Barrier actually worked. When I looked and saw how thin it was I thought there would be no way it would work, but the stuff really does help block sound. I laid it on my floor to stop hearing my son’s snoring and it was worked out great.
T. Martin, NH

The Barrier did exactly what I was told it would do. It didn’t completely eliminate the sound, but it did reduce it pretty well.
Hank Smith

Really a good product, tough to install by yourself though. Definitely not a one man job.
Matt Gardner

Barrier worked really well, installed pretty quickly and really helped stop the sound coming through my wall.
Levi Grazer

"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, LA