Cellulose Too Heavy Attic

When cellulose soaks up moisture in enclosed areas it can take a long time to dry out.

Cellulose too heavy attic.

Blow cellulose in the green areas since it is hard to get there. As a recycled paper product cellulose is prone to absorb moisture that can cause wood rot and mould. The mounds of loose material fill. This should not cause a problem.

There are literally millions of homes with cellulose insulation in the attic with installed r values up to r 60 and higher. You said adding ventilation has eliminated your moisture problem. First attic spaces can be overfilled to account for settling. Settling in attics is less problematic for two reasons.

List my plan is to reach the recommended r49 grade by. 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. 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. I suspect most of your dust comes from other sources.

Second when cellulose insulation in attics settles no empty spaces are formed. I can barely crawl there. I would recommend adding an r 40 which would bring you to the maxiumum insulation and the point of diminishing returns on your investment. 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.

No one has ever reported a case of a ceiling sagging let alone. Much less the cellulose in the walls since it is sealed behind the walls. Or roof structures cellulose may be too heavy. The top part of the attic is very low about 2 only at the highest spot.

The weight ratio per square foot of 8 1 2 of cellulose is usually 97 pounds per square foot. 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 is a continuous ridge vent and gable vents on both sides plus a small attic fan. Dry blown cellulose will characteristically settle and sag in place reducing its r value.