Cellulose insulation is the way to go if you’re interested in being environmentally friendly, or green.
Its primary component is recycled newsprint, as well as a variety of other paper products. So, instead of filling up a landfill, you can use cellulose to fill cavities in your home or work space.
There are both wet and dry applications. Dry cellulose insulation is blown in threw a hose. In existing construction, holes are drilled into the tops of walls and the hose is inserted. Wet applications are sprayed in and are often use in new construction, and must be left uncovered for at least 24 hours to dry out.
Pros
The borates used as a fire retardant in cellulose insulation, also retard mold and pests.
While a vapour barrier is necessary with other types of insulation, it may not be necessary when using cellulose.
Lacks the toxicity issues that some claim come with other types of insulation.
Cons
R-Value is generally not as high as you would get with other types.
Other Green Insulation Alternatives:
Cotton Insulation
The predominate material used is trimmings from the Denim industry and has no significant drawbacks. It’s R-Value is only in the range of 3 however.
Sheep’s Wool Insulation
Has an R-Value in the 2 to 3 range. There are a few drawbacks to consider. It needs to be protected from water leakage. The wool is treated with borate and if that fails, so do its mold and fire retardant capabilities. Untreated wool can be attacked by moths.
