You don't the permission to view this video
- Comes compacted in bags and is poured or blown into walls and between joists of the attic floor.
- Good for retrofitting insulation into previously uninsulated homes.
- Each bag is labeled according to federal specifications for both mineral wool and cellulose. Left column lists the R-value, second column tells how many bags are needed to cover 1,000 square feet of attic floor area, the third column gives the minimum thickness after completing the job.
- Some manufacturers have two columns on thickness for loose-fill and cellulose insulation. The second of these is labeled “settled density”. This is important since cellulose settles quickly.
- Types include fiberglass rock wool and cellulose. Cellulose is made from waste paper that has been treated to be fire retardant. It is also less likely to cause skin irritation.