New products and technologies mean there are more choices than ever when it comes to insulating and air sealing your homes. Our building scientists study the big picture, turning raw data into real world solutions that make a material difference for your homes and business.
We can help evaluate the options to determine the right approach to insulating based on your actual building practices, climate zone and other factors.
A truck load of Owens Corning® L77 can hold material for 2x the number of jobs. Cellulose insulation can only hold enough material for 1 job.<sup>9</sup>
See up to 300% savings in annual maintenance costs - Money and time that can be reinvested in growing your business.
Cellulose is naturally flammable and contains up to 20% chemically based retardants to reduce flammability.4 Fiberglass insulation is naturally non-combustible and does not require retardant.2
Fiberglass insulation installs in walls dry and does not absorb moisture. Wet applied cellulose insulation requires up to 24 hours or more to dry out, reducing jobsite productivity. If wall cavities are enclosed before the cellulose insulation has balanced moisture content, mold may develop.3
Wet spray cellulose insulation requires expensive equipment to install and maintain—as much as $8,000-$9,000 more than fiberglass insulation equipment.1
Working with Owens Corning® Fiberglas™ insulation is easy, and unlike cellulose insulation, it does not expose you to as much dust in an uncomfortable environment.
As codes shift, Owens Corning® Fiberglas™ insulation has a clear advantage and can meet R-15 in the wall. Cellulose insulation caps out at R-13 in a 2x4 wall.5
In attics, fiberglass insulation settles at a negligible rate, less than ~2%; cellulose insulation can settle up to 20%8. Which means more bags of cellulose insulation are required to achieve the same R-value.
Cellulose insulation takes up more space per truckload, limiting the number of jobs you can complete in a day. A fully loaded truckload of fiberglass insulation will insulate twice the wall area as cellulose insulation9.
Fiberglass insulation fibers have been tested for safety and are designed to dissolve in the body if inhaled. There is no testing for cellulose insulation fibers.
Owens Corning® ProPink® L77 Loosefill Insulation is rated Platinum, under the Cradle to Cradle Material Health Certification, the best rating possible for health impacts6, and Owens Corning® Batts are rated Gold6; To date, cellulose insulation has not been assessed for health impact. ProPink® L77 Loosefill Insulation has also achieved GREENGUARD® Gold Certification7 and is validated to be Formaldehyde free.
1. Initial purchase and maintenance of vacuum, water pump, wall scrubber, and tanks add incremental costs.
2. Fiberglass insulation is naturally fire resistant, but faced insulation will contribute to flame spread unless flame-resistant materials are used. Richard T. Bynum, Jr., Insulation Handbook (New York: McGraw-Hill, 2011.)
6. The Material Health Certificate is issued by the Cradle to Cradle Products Innovation Institute.
7. GREENGUARD Certified products are certified to GREENGUARD standards for low chemical emissions into indoor air during product usage. For more information, visit ul.com
8. Abe Kruger and Carl Seville, Green Building, Principles and Practices in Residential Construction (Cengage Learning, 2012)
9. Fiberglass insulation: 21 sq. ft. of R-14 wall per cu. ft. of truck space vs. Cellulose insulation: 10 sq. ft. of R-13 wall per cu. ft. of truck space
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