Fortunately a high quality professional installation can prevent most of the problems caused by settling.
Cellulose insulation settling in attic.
This process is often called dense packing.
When cellulose soaks up moisture in enclosed areas it can take a long time to dry out.
Cellulose blown in ceiling insulation is a good choice for diyers.
There are also a few drawbacks to cellulose insulation.
The mounds of loose material fill.
Unlike fiberglass insulation installed in roll out batts on the attic floor cellulose is blown into the attic under air pressure through large diameter hoses.
Cellulose insulation installs as fluffy aerated material that settles over the following weeks and months.
Blown in cellulose is an environmentally friendly material made from recycled newspaper so it s easier on your skin and lungs.
Additionally professional insulation installers must display a similar chart in the attic verifying the required depth of the insulation has been met.
Cellulose insulation can settle by as much as 20 percent depending on how it is installed.
While settling is one of blown in cellulose insulation s advantages this can also be a problem mostly with walls.
It prevents settling in wall cavities.
In walls standard practice is to install cellulose insulation at 3 0 to 3 5 pcf.