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.
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Enhance Thermal Resistance
Keep homes warmer in the winter and cooler in the summer, and save homeowners money on energy bills.
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Lowers Heating and Cooling Costs by up to 25%1
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Delivers a High R-value per Inch with Built-In Resistance to Air Infiltration
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Reduces Impact on the HVAC System
Featured Products
Solutions for Any Project
SANCTUARY
An eco-friendly cellulose insulation product that delivers unparalleled sound power reduction, highly effective insulation, temperature regulation and fire safety.
SANCTUARY DEFENSE
An eco-friendly, high-performance insulation that delivers everything SANCTUARY® does, but with added protection against 25 home-destroying pests.
FRM Insulation
Combined with our proprietary U370 firewall design, this formula achieves a 2-hour fire resistance rating, plus exceptional reduction in air infiltration and sound control.
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Find experienced, trusted professionals who know how to install SANCTUARY® cellulose insulation for maximum comfort, performance and peace of mind.