CORK UNDERLAYMENT SPECIFICATIONS

cork underlayment

Published Specs for #8244

Product Data –
Production Class: Composition Cork Underlayment

PROPERTY TEST NORM PERFORMANCE
Density ISO7322 10/13 pcf
Tensile Strength ISO7322 200 KPa
Compression
100 psi
ISO7322 30 -50% Recovery 75
Boiling Fluid Immersion Tests to ISO7322
Boiling Water Pass
Boiling HCL Pass
Mildew Resistance Test Pass
Thermal Conductivity
“K” Factor 40 btu/sf/h/F/inch
for 1/4″
“R” Factor 2.6
Acoustical properties under hardwood floors
Absorbs 84% of reflected sound
Absorbs 69% of transmitted sound
Acoustical properties under ceramic tiles
Impact Noise Rating (INR) +7
Impact Insulation Class (IIC) 58
Sound Transmission Class 55
Meets or Exceeds Specifications: HH-C-576 Type II, MIL-C-15116C Type II.This material has a shelf life of 1 year from date of manufacture when protected from environmental extremes.

 

The values shown represent current production and may vary under different conditions.