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Soundproof Floor Underlayment for Floor Impact

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 acoustic underlay 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 soundproof floor underlayment additionally is environmentally friendly and is a high-performance acoustic material. Find out more, and see product specs, below.

  • Cost-Effective
  • Reduces Impact Sound
  • Reduces Airborne Noise
  • Perfect for Commercial Soundproofing
  • For Use with Variety of Floor Finishes
  • Recycled Materials

Compatible Flooring Types

  • Hardwood floor
  • Laminate floor
  • Carpet
  • Ceramic Tile
  • Floating Floors

Product Testing & Information

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

Product Testing & Information

  • Product Specifications
  • CSI Specifications
  • MSDS
  • Installation Instructions

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 acoustic underlay 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 floor underlayment has demonstrated outstanding sound attenuation with a variety of construction assemblies and floor coverings including ceramic tile, laminate flooring, 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 mats conceal 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

Test ResultsClick Any Image for Larger ViewHardwood Floor over Wood AssemblyCeramic Floor over Wood AssemblyCeramic Tile over a 6″ Concrete SlabDownload STC & IIC Test Data Download STC & IIC Test Data Download STC & IIC Test Data STCIICSTCIICSTCIIC645570575552Airborne Sound Transmission Class (STC)Assembly125Hz250Hz500Hz1KHz2KHz4KHzSTCHardwood Floor over Wood Assembly425370839210064Ceramic Floor over Wood Assembly49586781919970Ceramic Tile over a 6″ Concrete Slab37436477869255Impact Insulation Class (IIC)Assembly125Hz250Hz500Hz1KHz2KHz4KHzIICHardwood Floor over Wood Assembly63554730191355Ceramic Floor over Wood Assembly57585448463557Ceramic Tile over a 6″ Concrete Slab66645548383452

Airborne Sound Transmission Class (STC)
Hardwood Floor
over Wood Assembly
Ceramic Floor
over Wood Assembly
Ceramic Tile
over a 6″ Concrete Slab
Impact Insulation Class (IIC)
Hardwood Floor
over Wood Assembly
Ceramic Floor
over Wood Assembly
Ceramic Tile
over a 6″ Concrete Slab