Quiet Barrier® HD Soundproofing Material (Sheet)

Top MOOver!
  • usa icon

    Made in USA

Quiet Barrier® HD Soundproofing Material (Sheet)

Noise can be a serious issue at home or on the job site. An easy-to-use soundproofing material can help you create a comfortable, productive environment. Quiet Barrier® HD Soundproofing Sheets are flexible, easy to install and work wonders in any commercial or residential setting. This material mitigates noise’s disruptive or harmful effects by containing sound to its source while preventing outside noise from getting in. These highly effective acoustic soundproofing sheets will meet demands in the construction, automotive, marine and other industries.

One of our bestselling materials, Quiet Barrier® HD Soundproofing Sheets are non-porous and offer dual functionality, simultaneously blocking airborne noise and dampening vibrations through surfaces. Lightweight design allows for easy installation on any flat or curved surface. Easily cut these sheets to the desired size and install them using acoustic sealant or tape. Peel-and-stick varieties are available as well. Purchase Quiet Barrier® HD Soundproofing Sheets from Soundproof Cow today!

Read More

Original price was: $145.99.Current price is: $137.99.

29 in stock

Holy Cow AMI is 29! We feel half our age so our Top MOOvers are 14.5% off with promo code moo440 all July.

Use Promo Code: Moo440
Icon of a speech bubble with the letter i italicized in blue

Do you have questions about this product?

Call Us
soundproof cow waving

Download the Installation Guide Here

Get My Installation Guide
Weight 67 lbs
Dimensions 4 ft. x 8 ft.
Thickness 1/4 in.
Weight 64 lbs.
Coverage 32 sqft.
Pressure Sensitive Adhesive No
Quantity 1 sheet
STC Rating 32
Availability Usually ships in 1-3 business days

Soundproof Your Home or Business With Quiet Barrier®

One of our most popular and most powerful soundproofing solutions, the Quiet Barrier® HD Soundproofing Material sheet is a 1/4-inch thick, 2 lb/sq ft 4×8 sheet of high-density, non-porous material that is superior at blocking sound.

Each sheet covers 32 square feet of surface area, so it is simple to cover areas large and small. Its high-density sound blocking power makes this sound absorbing material sheet suitable for recording studios, home theaters, restaurants and more. The soundproofing material deadens harsh noises and blocks sound transfer. You can enjoy clear sound and communication within the soundproofed area — the sounds inside won’t escape, and you won’t be bothered by extraneous sounds from outside.

How Quiet Barrier® HD Soundproofing Material Protects You

Each Quiet Barrier® sheet has multiple layers of soundproofing protection. It blocks noise like traffic from the street, loud music from neighboring buildings or units and other day-to-day sounds, while also insulating you from vibration and impact noise.

Order Quiet Barrier® HD Soundproofing Material Sheets at a Great Value

If you need soundproofing for your location, such as at a restaurant or suite of offices, you won’t find a better value than Quiet Barrier® HD Soundproofing Material sheets. They are superior to most standard forms of soundproofing, are quite affordable and are easy to install with complete coverage over the desired area — especially if you order your soundproofing material with our simple “peel and stick” pressure sensitive adhesive (PSA).

Before starting your next soundproofing project, make sure to order plenty of Quiet Barrier® HD Soundproofing Material sheets today.



* This product is not eligible for promotional offers.


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.


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 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

Acoustic Data


Product Wall Assembly Description STC* OITC*
Quiet Barrier® HD 2 x 4 wood stud, 16 in. on center,
receive side: 1 layer 5/8 type X gypsum,
Quiet Barrier® HD, sound isolation clips and channel
source side: 1 layer 5/8 type X gypsum
Quiet Batt® 30, R 13 insulation unfaced

*STC = Sound Transmission Class * OITC = Outdoor Indoor Transmission Class

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

Need a Quote Quickly?

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.

Call Us: 1-866-949-9269 Contact Us

Join the Herd

Get soundproofing tid bits and be the first to know about our special sales.

Subscribe Form - (Full Version)

  • This field is for validation purposes and should be left unchanged.