InsulTechnologies' cellulose insulation is blown or sprayed into place, preventing gaps and stopping air leaks better because of the way it's applied. Cellulose is more dense than most other insulation. Cellulose insulation forms a monolithic blanket of protection-blocking air infiltration and convection currents that are both primary causes of energy loss. The R-value of cellulose insulation, or its ability to stop heat transfer, remains consistent through a greater temperature and application range. This keeps the heat in during the winter, and out during the summer. While loose-fill fiberglass can lose as much as half its R-value at 20°F below zero, cellulose insulation actually performs at a higher R-value at 20°F below than it does at a pleasant 70°F. Those were the findings of tests conducted by the Oak Ridge National Laboratory. And what it means is that cellulose insulation works hardest when it's needed the most. Cellulose insulation can increase a wall's fire resistance by 22-55%, is non-toxic and guaranteed for the life of your house. Cellulose insulation has a Noise Reduction Coefficient of 0.90 (90% of sound energy absorbed). It's so effective at limiting outside noise, it's approved by the Federal Aviation Administration as an enhanced sound control material for homes located in the flight paths of our nation's airports! Cellulose insulation resists moisture, mildew and pests, plus preserves our natural resources. Cellulose insulation is a non-toxic natural product made from at least 80% recovered, post-consumer paper fiber, reducing landfill waste.