Greenfiber has your insulation solution.

With the broadest product line in the cellulose category, GreenFiber has specific products to suit the many different needs of the Design/Specify/Build community. As North America's largest cellulose insulation producer, GreenFiber products are available throughout the U.S. and Canada. Plus, GreenFiber provides design and technical support services, and application assistance.

Some helpful information

  • Certificates & Forms

    Download manufacturers certificates, warranties, UL evaluation reports and more.

  • Read Technical Documents

    Find coverage charts, fact sheets, installation instructions and much more.

  • Education Center

    Learn about Greenfiber insulation with these educational resources for Builders and Architects

  • Recycled content and locally sourced materials
    Greenfiber Sustainability

    Greenfiber Sustainability

    Whether for LEED, the National Green Building Standard, or other types of guidelines and standards, GreenFiber Blow-in Insulation has a broad set of characteristics to assist in meeting the demand for higher performing insulating products and assemblies.

    You can read a detailed report about Greenfiber insulation products and LEED projects, and a case study of Greenfiber insulation in a LEED Gold Certified Building.

    Greenfiber Sustainability


UL Certifications

Product DesignationApplicable Fire-Resistive Design(s)
FRM (Fire Rated Material) U370, U377
INS735, INS745, INS765LD and INS770LD G524, L521, L528, L546, L576, L582, M509, M512, P522, U023, U032, U036, U040, U053, U305, U309, U311, U317, U321, U326, U330, U331, U333, U338, U339, U340, U341, U342, U344, U354, U355, U356, U398, U403, U411, U412, U420, U425, U426, U428, U429, U434, U435, U436, U438, U440, U460, U462, U463, U465, U466, U467, U469, U470, U471, U477, U478, U495, U498, U499, U528, U622, U646, U647, U648, U651, V302, V303, V401, V410, V414, V416, V421, V455, V472, V481, V493, V495, W405, W419
INS510LD, INS515LD and INS541LD P522, U032, U036, U305, U309, U311, U317, U321, U326, U330, U331, U333, U338, U339, U340, U341, U342, U344, U354, U355, U356, U398, U528, V302, V303