Oregon Shepherd Loose-Fill Wool Insulation

Credit: Oregon Shepherd

What makes this product green?

  • Reduces heating and cooling loads
  • Low-emitting
  • Biobased and sustainably sourced


Oregon Shepherd blowing wool is 100% wool fiber with no added polypropylene or other polymer fiber. Sourced from throughout the western U.S., the wool used by Oregon Shepherd is not suitable for textile manufacturing, according to the company, and is considered an underutilized agricultural product, which makes wool insulation more attractive from an environmental standpoint. Wool has inherent fire-retardant properties, but Oregon Shepherd’s is treated with a proprietary borateBoron-containing chemical that provides fire resistance to materials such as cellulose insulation and provides decay and termite resistance to wood products. Borate is derived from the mineral borax and is benign, compared with most other wood treatments. compound for additional fire resistance and insect resistance. The material has been tested to ASTMAmerican Society for Testing and Materials. Not-for-profit international standards organization that provides a forum for the development and publication of voluntary technical standards for materials, products, systems, and services. Originally the American Society for Testing and Materials. E-84, E-1496, and C-518 standards. It has a density of about 1 lb/ft3 and has an R-valueMeasure of resistance to heat flow; the higher the R-value, the lower the heat loss. The inverse of U-factor. around 4 per inch.

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Manufacturer Information

Oregon Shepherd
75930 Rockcrest Road
Rainier, OR 97048
Toll-free: 888-629-9665

Listed in: Blown Insulation