Cellulose

Description
80-85% recycled newspaper with fire and pest retardants added.
Pros

  • Probably the greenest material because it is mostly recycled.
  • It also takes very little energy to produce it. Inexpensive.
  • Does not lose R-value as the temperature drops.
  • Provides a decent air seal when dense packed. (Dense packing is like putting 3 pounds of stuff in a 2 pound box.
  • It is harmful to bugs and may reduce mice and other critters from coming into the attic

Cons

  • Moisture Causes Cellulose Insulation to Loose Insulation R-value.
  • Health Issue Concerns with Cellulose Insulation.
  • Uneven Distribution of Cellulose Insulation Means Lower R-value.
  • Thermal Bridging Results in Lower R-value.
  • Shorting by Contractor Means You Don’t Get What You Paid For.
  • Does not prevent radiant heat transfer – the primary source of heat-flow in and out of buildings.

Quicklinks:

Cellulose
ThermoFoam
Fiberglass
Radiant Barrier
Rock Wool
Air Krete
Open Cell Foam
Closed Cell Foam