Whether it’s new construction or retrofit,

Greenfiber makes jobs go better.

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From attics to walls to floors, Greenfiber cellulose blows over old insulation, above non-woven netting, and into any hard-to-reach space down to the smallest chink. As a result, you get foolproof coverage in one fell swoop. And your customers get greater comfort and lower bills plus extra benefits including noise reduction and protection from fire, extreme temperatures and humidity.

Why should you switch?

See all our benefits
  • Retrofit without the fuss.

    It’s easy to blow Greenfiber over existing insulation without removing the old—and without itching.

  • Reduce energy bills by 22%.¹

    A comfort to your clients

  • Absorbs 90% of all sounds.²

    Filling every gap and void, Greenfiber helps sound-shield homes.

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If walls could talk, they’d recommend Greenfiber.

Across the US and Canada (and it gets really cold there), we’re the energy-saving, cost-effective, smart insulation choice. We’re also the leader in cellulose insulation, making it easily available for use in attics, walls and floors throughout the home.

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LEED Green
Building Certification

To earn certification under the U.S. Green Building Council's (USGBC) Leadership in Energy and Environmental Design (LEED) rating system, projects must not only satisfy all LEED system prerequisites, but also earn a minimum number of credits.

Greenfiber meets five significant criteria used in the USGBCs LEED certification ratings system:

  • Improve building durability
  • Rental Machine Accessories List
  • Conserve energy and electricity
  • Reduce demand for raw material
  • Improve indoor environmental quality

When applied properly, Greenfiber's fiber insulation products will contribute materially toward earning points in a LEED certification for LEED Green Building Design and Construction Rating System (BD + C) and LEED for Homes Rating System.

You can read more about Greenfiber's insulation contribution points here. You can also read a detailed report about Greenfiber insulation products and LEED projects, and a case study of Greenfiber insulation in a LEED Gold Certified Building.



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

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¹ Based on a University of Colorado study (1990) comparing cellulose and fiberglass batt insulation in identical structures during the winter season.
² Based on STC ratings on complete assemblies using staggered drywall construction with Greenfiber Wall Spray Cellulose Insulation. Architectural Testing, Inc., Report No. A2954.01-113-11Program - Prepared by Steven Winter Associates Inc.
³ According to Brookhaven National Laboratory
⁴ According to Oak Ridge National Laboratory