However, it tends to be 10% more expensive than fiberglass insulation. Made of actual sheep’s wool, this insulation naturally ...

Thermacork is harder to find than options like cellulose and wool, but we did track down one supplier that services the western U.S. and stocks Thermacork Insulation. Sheep Wool Insulation Is Made ...

Declining sheep numbers are also pulling up the price of strong wool. The country's flock keeps falling as more farms are ...