Does Cellulose Insulation Settle? Here’s the Real Answer! One of the most common questions we hear about cellulose insulation is: “Isn’t that going to settle over time?” The honest answer? It can if it’s not installed correctly. Just like any building product, performance comes down to proper application, not the material itself. The cellulose insulation we install is made of fiberized paper-based material. When it’s compressed in the bag and then installed at the proper density, those fibers na