See important cellulose insulation technical data from Weather Blanket Insulation.
Class 1 Cellulose Insulation
Underwriters Laboratories Inc.®
Classified Loose Fill Material
Classified in accordance with the following UL 723 and ASTMC -739-05 characteristics
Flammability Characteristics
Critical Radiant Flux | ≥ O.12w/cm2 |
Smoldering Combustion | ≤ 15.0 percent |
Flame Spread | 5 |
Smoke Developed | 50 |
Tested at 1.2 pcf density
Environmental Characteristics
Corrosiveness | Acceptable |
Fungi Resistance | Acceptable |
Physical Characteristics
Density (Settled) | 1.4p cf |
Thermal Resistance | 3.75 R/ln. (at 4" thickness) |
Moisture Absorption | Acceptable |
Odor Emission | Acceptable |
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