Skip to content


Formerly Sonus HS300

Our 3mm (1/8") REGUPOL sonus core 3 flooring underlayment is engineered, manufactured, and tested to reduce impact noise under resilient and hard surface floor coverings like ceramic tile, stone, hardwood, engineered hardwood, bamboo, and more resulting in a quieter living space. 

Test Reports

Product image REGUPOL sonus core 3

Product information

  • Material

    PUR bonded SBR tire rubber

  • Dimensions

    Roll size: 4' x 50' – 200 sqft / roll

    Thickness: 3mm (1/8")

  • Weight

    0.486 lb / sqft

  • Density (ASTM D-792)

    49 lb / cuft (+/- 4 lb)

  • Hardness

     A Shore Durometer: 40-55

  • Apartments
  • Condominiums
  • College Dormitories
  • Classrooms
  • Schools
  • Hospitals
  • Sustainable building product made from post-consumer and post-industrial waste
  • Applicable for a wide range of floor coverings
  • GreenCircle certified and can potentially qualify for up to 8 LEED points
  • Greatly reduces sound transmission of impact noise
  • Acoustic ratings up to STC 66, IIC 74, Delta IIC 27 depending on the floor covering and floor-ceiling assembly
  • Multiple sizes available including 2mm, 3mm, 5mm, 6mm, 10mm, 12mm, and 15+mm thicknesses
  • Individual consultation and customized solutions
  • Access to network of specialist planners
  • Product recommendations
  • Installation plans and support


In REGUPOL,you have an expert partner with many years’ experience in sound and vibration isolation. The products in the REGUPOL sonus core series are characterized by their outstanding quality and  durability, superior sound dampening, and long-term performance. 

Your Contacts

Bill Devin

Business Unit Manager, North America Email Save VCard

David Good

Application Engineer, North America Email Save VCard

Brian Lagaza

CSR / Inside Sales, North America Email Save VCard