Acoustic Underlayment

Acoustic Underlayments for resilient and hard surface floor coverings

High performance Soundproof Underlays from Regupol Acoustics.

We proudly represent Regupol Acoustics, a world leader in acoustics and vibration control. Their line of sustainably manufactured flooring underlayments provides highly effective sound insulation for both new construction and renovation projects. These high-performance underlayments are engineered to reduce impact noise under a wide variety of resilient and hard surface floor coverings, resulting in quieter spaces in multi-family/multi-story residential and commercial applications.

Concrete Sonus 12
Application: Under Ceramic Tile
Product: Sonus Sound Control Underlayment
Concrete Sonus 10
Application: Under Hardwood Flooring
Product: Sonus Sound Control Underlayment
Concrete Sonus Wave
Application: Under Concrete
Product: Sonus Curve Sound Control Underlayment
Concrete Sonus Wave
Application: Under Nail Down Hardwood
Product: Sonus Curve Sound Control Underlayment

The Preferred Choice

Regupol’s Sonus and Sonus Curve product lines are the preferred choice for impact sound control among acoustic consultants, project engineers, multi-family residential developers, architects, and property management corporations around the world. Long-term performance and quality together with lab, field-tested and proven sound-dampening results drive this preference. In addition to these proven results, Regupol’s deep commitment to sustainability is a very attractive value. Made from recycled rubber, the products are GreenCircle certified and can qualify for up to 8 LEED points.

Impact Noise Reduction Results

With all sound attenuation mats, the Impact Isolation Class (IIC) and the Sound Transmission Class (STC) ratings are based on the complete floor-ceiling assembly. These ratings will fluctuate depending on the other components of your assembly. A great rating to reference for determining how much improvement the underlayment alone contributes to the impact noise reduction is the Delta Impact Isolation Class (ΔIIC).

Regupol has made it easy to anticipate acoustic results with their extensive library of acoustical test reports, available through their easy-to-use drop-down menu on their assembly specifier:

Sustainable Green Products

SONUS acoustic underlayment is a sustainable green product made from 100% post consumer and post-industrial waste. Made from recycled tires, the result is that 150 million tons of tires are kept out of landfills each year.

These sound deadening underlay products are GreenCircle certified and buildings can potentially qualify for up to 8 LEED points. If your project is seeking LEED certification, REGUPOL products can help a building earn points in many LEED certification categories. Learn more here (

GreenCircle Certified

Great Value

Not only are the Regupol underlayments highly effective and sustainable, they are also competitively priced. From small renovations to large multi-story projects, Regupol underlayments are your best choice when acoustics matter.

Easy Installation

All SONUS acoustic underlayments are easy to install. Regupol provides step by step installation instructions including prep work and tools required. Specialty adhesives designed for each flooring type are recommended and data sheets available are here

Resilient & Durable

Greatly reducing the sound transmission of impact noise is the key feature of high quality acoustic underlayments. At the same time, they must be resilient and durable, capable of lasting a very long time. Regupol acoustic underlayments do this and much more.

Delivers Peace & Quiet

Once a project is complete, the end goal is peace & quiet. Choosing Regupol acoustic underlayments provides you with peace of mind, knowing that your project will deliver peace and quiet for the people residing, working, learning or healing.


Wherever a reduction of impact noise is needed, Regupol acoustic underlayments are the best solution.

  • Apartments
  • Condominiums
  • Dormitories
  • Classrooms
  • Schools
  • Hospitals

Three Unique Product Lines

Regupol offers three product lines; SONUS Underlayments, SONUS LV Underlayments and SONUSWAVE Underlayments. Each line is engineered and manufactured for specific flooring types.

SONUS Underlayments - Features & Benefits

Designed to reduce impact noise from footsteps, Regupol SONUS underlayment is the best acoustic underlay for ceramic tile & stone, carpet & carpet tile. As well, it is an excellent soundproof underlayment for hardwood floors. Greatly reducing the sound of impact noise, SONUS underlayment is the right choice for these types of flooring.

IIC 50 to 62*
ΔIIC 20 to 27*
*depending on assembly

Sonus Product


  • Hardwood flooring – floating and nail-down
  • Ceramic tile
  • Stone
  • Carpet & carpet tile

Sheet Sizes:

Sonus Curve Underlayments Features & Benefits

The Sonus Curve is made of dimpled rubber and engineered specifically to be installed under floated engineered hardwood, lightweight concrete as well as a 2-layer plywood raft system for nail down hardwood. This high-performance soundproofing material is designed to reduce the passage of impact transmission noise caused by footsteps. This product is the perfect choice for areas where weight & mass are necessary to increase the overall STC rating while isolating the concrete topping creating a floated isolated concrete floor which will reduce impact transmission.

IIC 49 to 68*
ΔIIC 25*
*depending on assembly


  • Lightweight gypsum
  • Plywood raft
  • Engineered hardwood

Roll Sizes:

  • 6mm
  • 8mm
  • 10mm
  • 17mm
  • 25mm


Regupol Acoustics ADHESIVES

TRUESET – High performance hard set acrylic adhesive bond coat designed for wet-lay installation of Sonus with Ceramic Tile & Stone. Read more and download the Data Sheet

Trubond – Universal all-purpose adhesive designed to adhere Sonus to subfloors for hardwood and ceramic tile installations. Read more and download the Data Sheet

PU350 – One-component, low-VOC, moisture cured polyurethane adhesive for bonding Sonus to engineered hardwood. Read more and download the Data Sheet

Woodbond – 100% solids, one-component, moisture cured urethane adhesive that is designed for the installation of engineered wood flooring. Read more and download the Data Sheet

Regupol Accessories

ISO-Strips – Rubber strips to install on wall perimeter or under wall partitions to isolate impact noise. Available in 6mm thing by 5ft long by 4” or 6” high.

About Regupol

Regupol America is the leader in acoustic and vibration control. This inventive, progressive and dynamic company brings sustainable, engineered, technology-driven products to construction projects in over 100 countries around the world.

Regupol America LLC is the American subsidiary of German-based, BSW (Berleburger Schaumstoffwerk GmbH), a third generation family run business. Headquartered in Lebanon, Pennsylvania, the products are engineered in Germany and made in America. The Regupol products are known for surpassing the competitors in quality and consistency.

Inventor of the original technology to recycle rubber tires into rubber flooring, Regupol has evolved this technology to manufacture flooring, multi-purpose surfaces, acoustic underlayments and specialty sound absorption products.

With products made of 100% post-consumer and post-industrial waste, the company uses over 115 million pounds of recycled rubber in the manufacturing process each year. As a GreenCircle Certified company, Regupol America has the verification of a third-party to confirm their high level of recycled content.

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