Learn More › Blown-in insulation products are competing to bring improved performance per square inch and the least amount of settling over time to the insulation market. Blown-in insulation ...

Say you find 14 inches of blown-in cellulose insulation, which has a typical R-value of around R-3.5 per inch, in your attic. That means your attic is insulated to about R-49, or 14 x 3.5. Keep in ...