Absorbs Impact and Airborne Sounds

Your Quiet Haven


Eco Cork Foam’s proprietary technology assures impact noise and sound transmission reduction for both residential and commercial applications. Our acoustic floor underlayment’s quality construction provides the extra assurance that it will continue to function throughout the life of your floors.

ECF is a superior solution for sound insulation and noise reduction, making it an excellent choice for multi-family units, including condominiums and apartments. It is excellent for use as a hardwood, engineered hardwood, laminate, or luxury vinyl flooring underlayment.  ECF’s acoustical ratings, as measured by a certified, third-party laboratory, are among the highest in the industry.

• IIC (Impact Insulation Class) – 73 dB
• STC (Sound Transmission Class) – 66 dB
• DELTA IIC (Impact Insulation Class) – 23 dB

All acoustical testing was performed in accordance with ASTM (American Society for Testing and Materials) Methods. Unit of measurement in decibels (dB).

Acoustical Classes

Impact Insulation Class (IIC) – IIC tests the ability to block impact sound by measuring the resistance to transmission of impact noise such as footfalls or objects dropped on the floor. The resulting rating is the number of decibels resisted in the transmission of impact noise. The higher the rating, the higher the resistance for your acoustic flooring.

Sound Transmission Class (STC) – STC tests the ability to reduce airborne sounds, such as voices, stereos, televisions and entertainment systems. The resulting rating is the number of decibels airborne sound is reduced. The higher the rating, the higher the reduction.

For both IIC and STC, a rating of 50 or above will satisfy the minimum requirements of the International Building Codes (IBC).

Delta IICDelta IIC tests the impact insulation difference between a bare concrete subfloor with no flooring materials and the same concrete subfloor with just flooring underlayment. The difference between those two values is the Delta IIC. A Delta IIC test is the best way to evaluate the sound absorption of an underlayment because the testing assembly is constant, or always the same. The higher the rating, the better the performance of your cork flooring underlayment.

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