Acoustic Curtains Material

Acoustic curtains and drapes are custom made for our clients’ commercial, scientific and residential use.

Curtains laboratory tested, field proved, Acoustic Curtains and Acoustic Drapes protect you from outside noise, climate and light, providing maximum privacy.

Acoustic Curtains with STC 20 reduce noise by 20 decibels!

Our Acoustical Curtains will reduce reverberation and echo in a large room, as well as reduce interference from outside noise. STC 20 Acoustic Curtains use a powerful sound blocking lining to provide maximum sound protection. Acoustic Curtains can be used to cover windows, doorways and as room dividers.

Acoustic custom made curtains for most residential windows (up to 50″w x 84″h); with your choice of one of fabrics. STC 20 Acoustic Curtains can be made in any width and up to 9’ high. We can also make STC 20 Acoustic Curtains using fabric you provide.

Acoustic Curtains with STC 17  reduce noise by up to 17 decibels!

STC 15 and 17 Acoustic Curtains are especially designed for where fire certification, lightweight and multiple curtain constructions are required such as schools, hotels, and other public venues. STC 15 and 17 Quiet Curtains can be made in any width and up to 18’ high. We can use your fabrics or you can choose from our wide selection of beautiful fabrics. We can also retrofit existing curtain systems. We now offer STC 17 roller shades!

Acoustic Curtains reduce reverberation and echo, as well as reduce interference from outside noise. Acoustic Curtains have tested NRC values (up to 1.00 NRC) to provide precise acoustical control and flexibility. Acoustic Curtains work due to our unique combinations of fabrics, lining and construction.

All Acoustic Curtains are custom made to our clients’ specifications for size, type of construction and fabrics. We will help you choose the right curtain to achieve both the noise control and the best look for your environment and budget. We will also help you with get the right tracks and mounting hardware for your Acoustic Curtains.

Acoustic Curtains

Both our STC and Acoustic Acoustic Curtains can be made in a wide range of constructions including pleated, Ripplefold, flat panel, Roman shades and our new STC 17 roller shades.

All Acustic Curtains are hand made and we happily accommodate commercial and volume orders. You will be delighted with the quality of workmanship and finish.

Whatever the application, our Acoustic Curtains are always a beautiful asset to a room. The look is classic and will always be in fashion, since elegance is never out of style.

Choose from our many tested fabrics and colors. You may also send us your fabrics with which to make Acoustic Curtains for you!

Acoustic Curtains work best when hanging in loose folds. Allow for stacking space if you want the curtains to clear a window or door.

By sizing the Acoustic Curtains to completely cover side, top and bottom of the windows, you are minimizing the amount of sound that can get through to the other side. Traverse rods allow the fabric to overlap in the center and wrap around the sides to provide as much coverage as possible. When giving us measurements, provide width and length for each curtain. Add additional stacking space if you need the curtain to clear the window on either side.


A STC rating describes the average number of decibels blocked by a material.

Our STC Sound Blocking curtains work due their inner linings. These linings are specialized, proprietary vinyl’s made exclusively for Quiet Curtains. The face fabrics used to construct the curtains have little impact on sound blocking. See the Table below for recommended face fabrics.

STC 20 Rated
STC 17 Rated
STC 15 Rated
Lining Specs
Weight lbs/sf 0.400 0.275 0.225
Fire Rated No Yes Yes
Color Black White White
Vinyl Type MLV Laminated Laminated
STC 20 STC 17 STC 15
Curtain types
Soft Fold 3 ply X X X
Soft Fold 2 ply X X
Pleated X X
Ripplefold X X
Roman Shade X X
Roller Shade X X
STC 20 STC 17 STC 15
Recommended fabrics
Nova Suede X X X
Visa Velvet X X X
Solitaire X X X
Anti-Microbials X X

Under normal conditions, the following will serve adequately well as a general guide on the impact of variances in sound pressure levels:

  • 1 dB change is imperceptible
  • 3 dB change is just perceptible
  • 5 dB change is clearly perceptible
  • 10 dB change is substantial (halves or doubles noise heard)

Summarized WEAL Lab Test Results

  Sound Absorption Results NRC’s
  Acoustic Quiet Curtains Low High
  Crescent Velour .85 NRC 1.0 NRC
  Vara Velvet .75 NRC .90 NRC
  Overture .65 NRC .80 NRC
  Visa Velvet .55 NRC .70 NRC
  Nova Suede .50 NRC .65 NRC
  Solitaire .40 NRC .65 NRC

The NRC range is a function of curtain construction. The highest NRC’s are Ripplefold 220% construction. The lowest NRC’s are Ripplefold 160% construction. Pleated curtains fall in the mid-range depending on fullness. Double sided soft-fold curtains perform similarly to Ripplefolds.

Contact Noise Control Specialists for FREE Consultation (561) 964-9360 or send us a message using our Online form

Acoustical Curtains Data:

Acoustic Curtains

Lab Tests

STC 17 – STC Test Specs

STC 20  STC Test Specs

Sound Transmission Loss Test

Acoustic Curtains Hardware

Acoustic Curtains Color:

Acoustic Curtain Color PDF Chart

Lab Test Results

NRC Nova Suede French Pleat

NRC Nova Suede Double Sided

NRC Vara Velvet French Pleat

NRC Visa Velvet French Pleat

NRC Solitaire French Pleat

NRC Crescent Velour Pleat

Case Study

Home Theater




We designed our Acoustic Curtains in response to the many requests we received for acoustic window treatments. Acoustict Curtains are particularly well suited to the following types of rooms:

  • Lofts
  • Condos
  • Residential & Commercial
  • Classrooms (e.g. band practice rooms, special education classrooms)
  • Auditoriums
  • Meeting/Conference rooms
  • Churches (stage, sanctuary, children’s rooms)
  • Home theaters
  • Vocal booths
  • Dance studios
  • Home recording studios
  • Restaurants
  • Hotel & Motel Rooms
  • Medical offices
  • Hospitals
  • Counseling offices