We are using raw, unwashed wool to insulate a little old 16 x 30 barn so it can be used for a chicken house.
Along with being fire and pest resistant insulation, wool is such a great renewable, environmentally friendly product that can be used for so many things!
“Sheep wool is a natural insulator because it has a crimped nature which traps air in millions of tiny pockets. Sheep wool insulation has an R-value of approximately 3.5 to 3.8 per inch of material thickness, 0.3 to 0.6 points higher than fiberglass, cellulose, or mineral wool.” – Healthy House Institute