Cellulose can shift and settle to one side of the attic due to airflow which can make some areas of the ceiling thinly insulated over time.
Pros and cons of cellulose attic insulation.
There are only three known mines in the world that contain boron ore.
Cellulose insulation pros and cons finally cellulose insulation is a light and fluffy coating of loose fibres which can be applied to your attic space.
Boron is a key chemical that is used in the processing of cellulose insulation used to make boric acid and the boron reserves are low.
When used in an attic space however both types of insulation are ineffective at air flow across the attic floor such as a strong gust of wind.
Regardless of which insulation you get make sure it has the appropriate r value for your climate zone.
Settling in attics is less problematic for two reasons.
Cellulose can slow down air flow particularly in walls.
Material costs and going with diy the open cell costs about 600 to cover 1 000 sq.
When cellulose soaks up moisture in enclosed areas it can take a long time to dry out.
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.
Although cellulose is made from recycled newspaper it is not flammable having been treated with borax.
Ft while closed cell comes in at 1 200.
Cellulose attic insulation cons.
List of cons of cellulose insulation.
For interior insulation this provides perhaps the greatest r value and with proper installation it covers gaps better than most options cons.
The pros and cons of today s most popular insulation.
First attic spaces can be overfilled to account for settling.
Messy unsightly and can be very expensive cost.
Cellulose recycled ground up paper with boric acid added for insect control and fire resistance offers a better attic insulation option than batts.
The higher the r value the stronger and more expensive the insulation.
Cellulose weighs several times as much as fiberglass which isn t an issue unless used to insulate an attic slope.
If you choose to install cellulose yourself you can buy the insulation in bags from your local home improvement store.
Because these fibres are applied loosely they can offer greater coverage than pre cut batts or rolls of material although they are less impermeable than spray foam.