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Technical specifications
FLAME SPREAD / SMOKE DEVELOPMENT
<25/50 (ASTM E84)
HOT SURFACE PERFORMANCE
No Cracking or Delamination (ASTM C411)
OPERATING TEMPERATURE RANGE 
-40°F (-40°C) to +220°F (104°C)** (ASTM C534)
**Intermittent temperature “spikes” to 250°F (121°C)
THERMAL CONDUCTIVITY 75°F (24°C) MEAN TEMP
0.245 (0.0353) (ASTM C177)
UV / WEATHER RESISTANCE
Good* (ASTM G90)
*Outdoor applications should be protected with an approved K-FLEX coating or cladding for optimum performance.
WATER VAPOR PERMEABILITY (DRY CUP: ELASTOMERIC INSULATION)
<0.01 perm-in (ASTM E96)
DENSITY
3-6 lb/ft3 (ASTM D1667)
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