Print Page

Soundproof Underlayment for Sound Deadening

Duracoustic S.T.O.P.™ Floor underlay floor noise reduction mat for sale at Acoustical Surfaces.


Floor soundproofing is often overlooked when building a space, and can be some of the most distracting and reflective places on a project. Duracoustic S.T.O.P.™ floor impact noise reduction underlayment is designed to help with that problem. This underlayment is durable and resistant to ripping and bunching, making the installation easy. Additionally, the Duracoustic S.T.O.P.™ material resists mold and mildew, as well as compression, for longer performance and continued acoustical noise reduction year after year. This underlayment additionally is environmentally friendly and is a high-performance acoustic material. Find out more, and see product specs, below.

  • Cost-Effective
  • Reduces Impact & Airborne Floor Noise
  • For Use with Variety of Floor Finishes
  • Recycled Materials

Product Testing & Information

  • Product Specifications
  • CSI Specifications
  • MSDS
  • Installation Instructions
  • Access All

Features & Benefits

  • Greatly reduces impact sound; rubber is the best sound absorption material
  • Increases IIC and STC ratings
  • Does not compress and therefore holds its acoustical value over time
  • Easy installation – will not slip or break down during installation
  • Conceals minor subfloor irregularities
  • Works extremely well over radiant heated floors
  • Resists mold, mildew, and fungus growth

Environmentally Friendly

  • Made with 85% recycled tire rubber and is 100% recyclable
  • Low VOCs
  • Can contribute to LEED credits

Duracoustic soundproof underlayment offers a simple but very effective solution for creating soundproof flooring systems that meet stringent sound ratings in multiple-story dwellings, condominiums, hotels, apartments, private homes, and business applications including old building conversions into condominiums.

Duracoustic is a soundproof underlayment made from 85% recycled rubber. This sound deadening floor underlayment is a reinforced rubber mat with an open cell structure which enhances its sound deadening properties making possible the installation of cost-effective soundproof flooring.

The Duracoustic sound deadening floor underlayment system acts as a decoupler by breaking the sound transmission path through the floor-ceiling assembly and prevents noise flanking room to room. Testing on this soundproof underlayment has demonstrated outstanding sound attenuation with a variety of construction assemblies and floor coverings including ceramic tile, laminate, engineered, and soundproofing hardwood floors.

Product Specs


Sound deadening floor underlayment is made from open cellular rubber bonded to fiberglass/cellulose backing scrim.


Flat Textured


Soundproofing floor mat conceals floor irregularities. Resists mold, mildew and fungus growth. Hardwood flooring underlay designed for high traffic, long lasting floor impact noise control.


Floor/ceiling applications requiring sound privacy. Apartments, condominiums, schools, offices, hospitals.




54″ × 24′ (108 sq. ft. per roll)


65lb roll (.6 lbs./sq.ft.)




ASTM E-648 Radiant Panel Class 1 (FF1-70 PASS)


DAA5 or Poly 300 Adhesive

Airborne Sound Transmission Class (STC)
Assembly 125Hz 250Hz 500Hz 1KHz 2KHz 4KHz STC
Hardwood Floor
over Wood Assembly
42 53 70 83 92 100 64
Ceramic Floor
over Wood Assembly
49 58 67 81 91 99 70
Ceramic Tile
over a 6″ Concrete Slab
37 43 64 77 86 92 55
Impact Insulation Class (IIC)
Assembly 125Hz 250Hz 500Hz 1KHz 2KHz 4KHz IIC
Hardwood Floor
over Wood Assembly
63 55 47 30 19 13 55
Ceramic Floor
over Wood Assembly
57 58 54 48 46 35 57
Ceramic Tile
over a 6″ Concrete Slab
66 64 55 48 38 34 52