Greenfiber

About Greenfiber

Build faster, better and stronger with SANCTUARY® by Greenfiber® cellulose insulation. Blown in for quick installs, it fills every cavity, delivering high R-values, superior air sealing and sound reduction. Cut labor and material costs, meet stricter energy codes and offer buyers a sustainable choice made from up to 85% recycled content — all backed by North America’s largest cellulose producer.