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Natural Cork
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Natural Cork

Description Natural cork floor tile for commercial and residential applications.
Size   12" x 12" and 12" x 24" x 3/16" (4.8 mm). Other sizes available by special order.
Density   550 kg/m 3 (34 lbs/ft3)
Thermal Insulation  

0.06 W/m ° k

coustical Ratings  

over 8" concrete with suspended ceiling
STC = 58 (in accordance with ASTM E413-87)
I IC = 73 (in accordance with ASTM E989-89)

Flammability   ASTM E 648 = Class 2 Pre-finished - Class 1 Unfinished
Smoke Density  

Specific Optical Density ASTM E 662 (NFPA 258)
Flaming: -148 Non Flaming: -272

Compression Recovery  

ISO 9727
With loading of 38.5 lbs/in2
Initial: 10% Residual: 1.5% after 1 hour
Breaking tension on traction: no less than 11 lbs/in2

Thermal Resistance   ASTM C 518
Thermal conductivity (k): -0.3490
Thermal resistance (r): -0.49
Thermal resistance per inch: -2.87
Disintegration   Does not disintegrate in water after boiling for 3 hours.
Dimensional Tolerance  

Length & Width: +/- 0.3 mm
Thickness: +/- 0.2 mm

Squaring   No greater than 0.2 mm
Finish   Sanded unfinished or factory finished with 3 coats Curable Oil
Abrasion Resistance  

ASTM D 3884
Abrasion wheels H-18 with 1000 gram
400 wear cycles

Water Vapor Transmision   -0.128 grains/h ft2
Permeance  

ASTM E 96
-0.183 perms

Packaging   88 sq ft per carton. Broken carton available with up-charge.