product: Whispermat


Whispermat: Effective and Affordable Sound Control

Whispermat is a unique noise control solution designed by acoustic engineers to deliver exceptional performance at an economical cost.

How it Works:

Whispermat uses a multi-layer, adhesive-free construction to achieve superior sound absorption and dampening:

  • Dense Barrier Septrum: This layer acts as a physical barrier, effectively blocking airborne sound transmission.
  • Hushcloth® Acoustic Foam: This layer absorbs sound waves, preventing them from bouncing back into the room. When combined with the barrier septum, it provides both isolation and absorption.
  • Damping Effect: The composite structure of Whispermat reduces vibration on various surfaces like metal, wood, and plastic, further reducing noise transmission.

Benefits of Whispermat:

  • Effective Sound Absorption: Whispermat absorbs a broad range of sound frequencies, creating a quieter and more comfortable environment.
  • Superior Noise Isolation: The barrier layer effectively blocks unwanted noise from entering or leaving a space.
  • Economical Solution: Whispermat’s adhesive-free construction eliminates potential adhesive failure and offers a cost-effective approach to noise control.
  • Versatile Applications: Whispermat can be used in various settings, including walls, ceilings, floors, and machinery enclosures.

whprmat sound absorption
whprmat transmission loss

Whispermat: Customizable Noise Control Solutions

Whispermat offers a wide range of customization options to meet your specific needs:

  • Number of Barrier Layers: Choose from single or double barrier septums for varying levels of noise isolation.
  • Barrier Weight and Foam Thickness: Select the optimal barrier weight and foam thickness to target different noise frequencies and achieve the desired level of sound absorption.
  • Surface Treatments: Whispermat comes with various surface treatments to suit your application.
  • Pre-cut Options: Purchase Whispermat in rolls or sheets for easy installation.
  • Custom Fabrication: We can die-cut or fabricate Whispermat to your exact specifications for a perfect fit.
  • Easy Cutting: Whispermat foam composites can be conveniently cut with a knife, shears, or scissors for on-site adjustments.
  • Adhesive Options:
    • For standard applications, choose an economical SBR pressure-sensitive adhesive.
    • For high-temperature environments (up to 200°F), an acrylic PSA is available.
    • Important Note: When using heavy-duty Whispermat composites, contact adhesives or mechanical fasteners are recommended for a more secure bond.
Physical Properties
Color Barrier: Black Foam: Charcoal Grey
Density Barrier 1/2 to 2lbs sq ft.; Foam 2lbs cu. ft.
Flammability MVSS 302, SAE J369, Special Formulation to UL-94V and FAR 25.853
Temperature Range -30 degrees Farenheit to +200 degrees Farenheit MIL-STD-810 at 250 degrees Farenheit, 7 24 hr. periods PASS
Cold Crack MIL-STD-810 at -25 degrees Farenheit, 1&quote mandral PASS
Thermal Conductivity .30-.38 BTU in per hr. sq. ft. degrees Farenheit ASTM C518
Tear Strength 20 lbs in min. ASTM D624, DIE C
Tensile Strength 240 lbs sq. in. min. ASTM D 412, DIE 1
Peel Strenght 2.2lbs in. min., ASTM D903
Elongation 120%



Whispermat1: Effective Sound Control for Walls, Floors, and More

Whispermat1 is a single-layer solution for controlling noise in various applications. It combines a dense barrier layer with Hushcloth® acoustic foam to provide both sound absorption and isolation.

How Whispermat1 Works:

  • Blocks Airborne Noise: The barrier layer acts as a physical barrier, effectively reducing sound transmission through walls, floors, and other structures.
  • Absorbs Sound Waves: The exposed Hushcloth® foam absorbs airborne noise, preventing echoes and creating a quieter environment.
  • Reduces Vibration: Whispermat1 acts as a mass damper, minimizing vibration in sheet metal, plastic, and wood surfaces. This further reduces noise transmission.

Key Applications:

  • Walls and Ceilings: Whispermat1 can be applied directly to walls and ceilings to dampen noise and improve soundproofing.
  • Flooring Underlayment: When used with a decoupler pad (1/4″ or 1/2″ thick), Whispermat1 becomes an effective carpet underlayment, reducing noise transfer from footsteps and impact.
  • Pipe Wrap: The exposed barrier surface is tough and durable, making Whispermat1 suitable for pipe wrap applications. A facing can be added for increased weather resistance.
  • Marine and Truck Cab Applications: Whispermat1 can be customized with closed-cell foams to address moisture concerns in marine environments or truck cabs.

Surface Treatments
Foam Side: Embossed, Aluminized polyester, reinforced metalized, and urethane (white, black). Barrier Side: Plain black, white reinforced, Silver reinforced.

Standard Sizes (Whispermat1)
54″ x 50′
Sheets: 54″ x 72″
Fabricated or Die Cut Parts Foam Thickness: 1/4″ – 2″

Specifications – Whispermat1
Frequency Hertz 125 250 500 1000 2000 4000
Transmission Loss, db 18 20 25 32 34 36
Transmission loss ASTM E90-75
1″ absorber without enhancement
Riverbank Acoustical Laboratories



Whispermat2: Enhanced Noise Control for Demanding Environments

Whispermat2 is a powerful noise control solution designed for superior sound absorption and isolation. It features a unique “sandwich” construction:

  • Double Hushcloth® Acoustic Foam: Two layers of high-performance foam effectively absorb a broad range of sound frequencies, reducing noise levels significantly.
  • Single Barrier Septrum: This dense layer acts as a physical barrier, blocking unwanted noise transmission.
  • Isolation Layer: A thin isolation layer (typically 1/4″ thick) decouples the barrier from the structure, further enhancing noise reduction.

Whispermat2 Advantages:

  • Economical Solution: Whispermat2 delivers exceptional noise control at a competitive price.
  • Highly Effective: The combination of sound absorption and isolation makes Whispermat2 ideal for even the harshest environments.
  • Customizable Performance: Choose from various surface treatments like embossed finishes, aluminized polyester, or even custom facings to optimize performance and aesthetics for your specific application.

Surface Treatment Options:

  • Embossed or Convoluted Surfaces: Enhance sound absorption and add a decorative touch.
  • Aluminized Polyester: Provides a reflective surface and improves weather resistance.
  • Reinforced Polyester: Offers a durable and tear-resistant finish.
  • Urethane: Available in matte or impervious options for various needs.
  • Perforated Vinyl: Sandpiper black vinyl provides a balance of sound absorption and aesthetics.
  • Tedlar (Dupont): Ideal for high-temperature environments.
  • Custom Facings: We can create facings to match your specific requirements.

Standard Sizes (Whispermat2)
54″ x 50′
Sheets: 54″ x 72″
Fabricated or Die Cut Parts Foam Thickness: 1/4″ – 2″

Specifications – Whispermat2
Frequency Hertz 125 250 500 1000 2000 4000
Transmission Loss, db 21 27 29 37 49 53
Transmission loss ASTM E90-75
1″ absorber without enhancement
Riverbank Acoustical Laboratories

Whispermat Safe & Sound

Whispermat Safe and Sound

Whispermat Safe and Sound: Fire-Resistant Soundproofing for Transportation

Whispermat Safe and Sound is an innovative soundproofing solution specifically designed for the transportation and rail industry. It combines superior noise control with exceptional fire safety features.

Key Advantages:

  • Enhanced Fire Safety: Made with a high-temperature melamine foam, Whispermat Safe and Sound achieves low smoke (16.9) and flame spread (2.5) ratings that meet ASTM-E84 standards.
  • Durable Mechanical Bond: The foam and barrier are mechanically bonded, eliminating the risk of adhesive failure and ensuring long-lasting performance.
  • Lightweight Construction: The melamine foam keeps Whispermat Safe and Sound lightweight, reducing overall weight in your transportation or rail vehicle.
  • Superior Sound Absorption: This product effectively absorbs unwanted noise, creating a quieter and more comfortable environment for passengers and crew.

Industry Compliance:

Whispermat Safe and Sound meets the strict requirements of ASTM-E 162-90 and ASTM 3-662-93, making it ideal for various transportation and rail applications.

In essence, Whispermat Safe and Sound offers a safe and effective solution for reducing noise in your transportation vehicles while adhering to critical fire safety regulations.

Specifications for WHISPERMAT Safe & Sound
Color White MVSS 302 Pass
Size 48″ x 24″ ; 48″ x 48″ ASTM C795 Foam Pass
Barrier Weight 1/2 lb./sft. – 1 1/2 lb/sft UL-94-5 Foam Pass
Thermal Conductivity .25 BTU in/h sft F at 68′ UL94 V-O Foam Pass
Foam Temperature -32F to 400F Intermittent UL 94 HF-1 Foam Pass
Composite Temperature -32F to 300F FAR 25 853 (a-1) Foam Pass
Density melamine foam .7 Ib.sft FAR 25 853 (a) Foam Pass
Tested to Boeing BSS 7239 ATS 1000.001 Foam Pass
Kit Desription
WM1-16-1A 1/4″ FOAM + 1LB. BARRIER
WM1-16-2A 1/2″ FOAM + 1LB. BARRIER
WM1-16-4A 1″ FOAM + 1LB. BARRIER
WM1-16-8A 2″ FOAM + 1LB. BARRIER
WM2-16-16A 1/4″ FOAM + 1LB. BARRIER + 1″ FOAM