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Quiet Barrier­™ MD Soundproofing Material (Roll)



The Quiet Barrier™ MD Soundproofing Material Roll allows you to enjoy the amazing sound dampening and sound blocking quality of our Quiet Barrier™ MD material on a convenient roll. You can easily and efficiently cover the space you need to soundproof without any waste. It’s available in 1/8-inch thick 20 or 30 ft. by 4 ½ ft. rolls.

Quiet Barrier™ products block sound in two ways. It protects you from everyday noise like traffic, construction sounds and noisy neighbors, and it also dampens vibratory impact noise. When you cover your walls, ceilings or floors with Quiet Barrier™ Soundproofing Material, you will enjoy clear sound inside the covered area while preventing sound from penetrating or escaping, giving you peace and privacy.

Quiet Barrier™ MD Soundproofing Rolls for Maximum Soundproofing Value

Quiet Barrier™ MD Soundproofing Material Rolls provide greater value over other soundproofing alternatives. It’s easy to install as well. You can use one of Soundproof Cow’s adhesive options or the “peel and stick” pressure sensitive adhesive (PSA).

Quiet Barrier™ is extremely popular as a soundproofing product, as evidenced by the over 1.5 million square feet of this material that customers have installed throughout the country. Find out why for yourself. For easy soundproofing for your study at home, garage-based recording studio, office conference room or any of a variety of home and commercial applications, order Quiet Barrier™ Soundproofing Material Rolls today.

* This product is not eligible for promotional offers.



Dimensions (20 ft. OR 30 ft.) x 4 1/2 ft.
Thickness 1/8 in.
Weight 20 ft. = 90 lbs., 30 ft. = 135 lbs.
Coverage 20 ft. = 90 sqft., 30 ft. = 135 sqft.
Quantity 1 roll
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™ MD soundproofing material (1/8 in. 1 lb./sqft.) 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

The Barrier is great and has solved my problem, but I wish I would’ve known more about installing the material. It was so flimsy and heavy and awkward to hold, I’m sure it would have been done a lot quicker had I known to have someone else help in installing. I would use this material again though as it worked great, I just wouldn’t put it in by myself.
larry d.

Next time I order this material, which I will because I love the stuff, I’m going to go with the sheets instead of the rolls. The rolls were a little bit hard to handle and all the cutting was exhausting. Still, the Barrier has been great for us so far.

"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