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Double bubble insulation

The bubble contains an air retention layer designed to provide increased strength and puncture resistance. Insulation is used to either contain heat on maintaining warmth or to resist heat on maintaining cold.
Double the bubbles for double the air space. The air space in the product, the better it is at slowing heat transfer. Double bubble insulation provides maximum efficiency. Key benefit of this foil-faced double bubble include:

Physical Properties Test Reflective/ Double Bubble/ Reflective
NORMAL THICKNESS
±10 mm
TEMPERATURE RANGE
ASTM C411
500 F to 1800 F
FIRE RATING
ASTM E84
CLASS 1/ CLASS A
THERMAL RESISTANCE (system
ASTM C1224 (3.5 cavity)
R-15.2 (Heat Flow Down) R-8.5 (Horizontal Heat Flow) R-6.6 (Heat Flow Up)
EMISSIVITY
ASTM C1371
0.06
REFLECTIVITY
ASTM E 903
0.94
WATER VAPOR PERMEABILITY
ASTM E96 / CGSB 51.33-M89
Conforms Type I
RESISTANCE TO FUNGI & BACTERIA
ASTM C1338
Does Not Promote Growth
BLEEDING & DELAMINATION
ASTM C 1224
No Bledding or Delamination
PLIABILITY
ASTM C 1224
No Cracking or Delamination