Cellulose vs. Fiberglass Insulation Sound Proofing Demonstration

Cellulose Insulation and Fiberglass Insulation are compared in this demonstration to show the sound proofing differences in the two leading insulation products.

[@cimausa1]

Actually, I do understand. Cellulose insulation cannot be blown into a wall at a wide range of densities. You could blow 2.0 pcf into a wall, but it would be an improper installation. Standard practice is to install the material at 3.0 to 3.5 pcf. At anything less than this settlement will occur and there will eventually be voids at the top of the cavities. Even cellulose wall cavity spray--the material used in the sound bucket demonstration-- is installed at this density.

[@PaulLadendorf]

It would help if you would provide the density of the blown in cellulose as its obvious the denser the pack, the more cellulose is needed and the more expensive the application.

[@cimausa1]

The cellulose is the density it would be installed in a wall.

[@PaulLadendorf]

I don't think you understand. Cellulose can be blown into a wall at a wide range of densities...maybe between 2 to 3 1/2 lbs/ft2