Greenfiber
Cellulose insulation manufacturer used in dense, low-carbon high-performance building envelopes.
What they're known for
A North American cellulose-insulation manufacturer spanning dense-pack, blow-in, and spray-applied systems for thermal and acoustic enclosure performance.
Greenfiber manufactures cellulose insulation for residential and commercial construction, with products used in walls, attics, floors, ceilings, and retrofit assemblies. Its SANCTUARY line can be blow-in, spray-applied, or dense-packed, while the broader catalog includes pest-resistant and fire-rated formulations. With manufacturing and distribution across the United States and Canada, Greenfiber is a practical materials node for thermal, acoustic, and retrofit performance.
Performance focus
- Thermal Comfort
- Acoustics
- Low-Carbon Construction
Notable products
We haven't catalogued their full line in the directory yet. These are the entries worth knowing.
- Catalog entry
SANCTUARY
Blow-in, spray-applied, and dense-pack cellulose insulation
- Catalog entry
SANCTUARY DEFENSE
Cellulose insulation with added pest resistance
- Catalog entry
FRM Insulation
Cellulose insulation used with Greenfiber fire-rated wall assemblies
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Sources
Facts verified October 2026. Compound is an independent editorial directory and is not affiliated with this company unless stated.