Elevates Comfort & Efficiency

Comfort Without Compromise

SANCTUARY® by Greenfiber® cellulose insulation creates a cozier, peaceful and more balanced home by regulating temperature and reducing drafts. This dense, high-performance, eco-friendly insulation delivers safe, nontoxic comfort, supporting the health and well-being of everyone inside. By maintaining consistent temperatures, it eases strain on heating and cooling systems, enhancing comfort and efficiency throughout the home.

  • Lowers Heating and Cooling Costs by up to 25%1
  • Delivers a High R-value per Inch with Built-In Resistance to Air Infiltration
  • Reduces Impact on the HVAC System