SANCTUARY by Greenfiber® is the all-in-one cellulose insulation that can be blow-in, spray-applied, or dense-packed. It can be easily installed over existing insulation and unlike batt or roll alternatives, it’s engineered to fill every gap, void, and hard-to-reach space, forming a dense barrier that reduces air infiltration to boost thermal performance and reduce sound. Made with 85% recycled materials, free from harmful additives, SANCTUARY supports better living and a greener planet while meeting modern building codes and delivering lasting value for your home.