GreenFiber Cocoon 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 the insulation, or its ability to stop heat transfer, remains consistent through a greater temperature and application range than that of loose-fill fiberglass, keeping heat in during the winter, and out during the summer. GreenFiber Insulation can increase a wall’s fire resistance by 22-57%. Cellulose insulation is non-toxic, and GreenFiber guarantees its products for the life of your house.