Installs great.

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Easy to use.

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Rebates and Savings

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Blown-in Fiber Glass Insulation

Adding Attic Insulation is easy with TrueComfort®

The TrueComfort system comprises fiber glass blown-in insulation and the blowing machine used to install it. The machine is portable and simple to operate, and the insulation is super-expanding, requiring fewer bags than other competitive products to achieve the same R-Value. Remodelers and Do-It-Yourselfers (DIYs) can rent the machine and retrofit attics 
saving homeowners up to 20% on energy costs.
(Savings vary. To find out why, go to Higher R-Values mean greater insulating power.)

These insulation products may qualify for rebates and other incentives. For more information, visit for your area’s specific offers.

CertainTeed cares about the environment and Building Responsibly™, and for more than 100 years has maintained a commitment to provide sustainable, innovative solutions that improve energy efficiency and comfort. From production to product, CertainTeed's focus has been on minimizing its impact on the environment by reducing energy consumption, conserving renewable resources and lowering greenhouse gas emissions. And with our Sustainable Insulation® fiber glass products, the mission continues. Visit for more information or watch our YouTube video.

TrueComfort complies with national, state and local building standards and qualifies as a Type I insulation under ASTM C 764. Surface burning characteristics per ASTM E 84 include a flame spread index less than 25 and a smoke developed index less than 50. InsulSafe SP is noncombustible per ASTM E 136.
  • ASTM C 764, Type I Pneumatic Applications
  • Thermal resistance—ASTM C687 and C518
  • Critical Radiant Flux—ASTM E970
  • Combustion Characteristics—ASTM E136 (Non-combustibility)
  • Water Vapor Sorption—ASTM C1104
  • Odor Emission—ASTM C1304
  • Corrosiveness—ASTM C764.12.7
  • Fungi Resistance—ASTM C1338
  • Surface Burning Characteristics—ASTM E84 (Flame Spread 5, Smoke Developed 5)

Download installation instructions in both English & Spanish here, or watch the TrueComfort installation guidelines video (English only).

CertainTeed insulation products improve building energy efficiency and reduce building energy consumption for the life of the structure. As a result, they help conserve nonrenewable energy sources, decrease dependence on foreign oil and lower greenhouse gas emissions. In addition, the recycled content of CertainTeed fiber glass insulation is currently 30-35% and exceeds the EPA Recovered Material Guideline for fiber glass products, consisting of pre-consumer and post-consumer glass cullet.

CertainTeed fiber glass insulation products are GREENGUARD Gold Certified for low chemical emissions into indoor air during product usage.