Why Cellulose Insulation Saves You Money & Reduces Noise | Long-Term Home Comfort! We break down the real advantages of cellulose insulation from lower energy bills to a quieter, more comfortable home. 🏠💨 Unlike other materials, Greenfiber cellulose provides long-term stability and no settling when properly installed. With densities of up to 3½ lb per cubic foot, it ensures lasting performance and better coverage. But that’s not all the noise reduction is remarkable. Whether it’s traffic, neig