First attic spaces can be overfilled to account for settling.
Cellulose too heavy attic.
Settling in attics is less problematic for two reasons.
Dry blown cellulose will characteristically settle and sag in place reducing its r value.
When cellulose soaks up moisture in enclosed areas it can take a long time to dry out.
Much less the cellulose in the walls since it is sealed behind the walls.
This should not cause a problem.
Or roof structures cellulose may be too heavy.
Unless you are visiting your attic often there is no way for the cellulose to get into the living area of the house.
I would recommend adding an r 40 which would bring you to the maxiumum insulation and the point of diminishing returns on your investment.
You said adding ventilation has eliminated your moisture problem.
List my plan is to reach the recommended r49 grade by.
I ve heard rumors that cellulose can be pretty heavy and could be dangerous if you put too much up there.
I ve heard rumors that cellulose can be pretty heavy and could be dangerous if you put too much up there i m going to blown in cellulose in my attic.
With at least 3 of cellulose overblow 6 is better the sucky aspects of low density batts falls off dramatically since convection current between the attic air and entrained air in the fiberglass layers can no longer occur due the higher air retardency of the cellulose.
I suspect most of your dust comes from other sources.
No one has ever reported a case of a ceiling sagging let alone.
The mounds of loose material fill.
Blow cellulose in the green areas since it is hard to get there.
There is a continuous ridge vent and gable vents on both sides plus a small attic fan.
If your attic has a lot of nooks and crannies your best bet may be to use loose fill insulation made of fiberglass or cellulose.
Second when cellulose insulation in attics settles no empty spaces are formed.
As a recycled paper product cellulose is prone to absorb moisture that can cause wood rot and mould.
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.
There are literally millions of homes with cellulose insulation in the attic with installed r values up to r 60 and higher.
Cellulose is known to create a massive cloud of dust when it is installed meaning breathing apparatus is required if you are considering a large installation.
