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Premium Blowing Wool

OPTIMA gives homes a custom-designed, seamless, thermally efficient sound-reducing blanket that completely fills any void. No other product installs better or performs better than OPTIMA.
OPTIMA fiber glass insulation is blown behind a special OPTIMA fabric, or equivalent, in new construction. It can also be used for retrofitting existing sidewalls. This product is designed for closed-cavity applications only.


  • Blown in dry
  • No drying required—immediately ready for drywall
  • Thermally efficient—fills voids for higher R-Values per inch
  • Excellent sound control
  • Little dust—quick clean-up
  • More uniform application
  • Won’t settle
  • GREENGUARD Gold Certified
  • Formaldehyde-Free

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.


CertainTeed building insulation complies with ASTM C 764, Type I and other national, state and local specifications as listed on corresponding product specification sheets.

Download Product Specifications, Submittal Forms and MSDS here.
When installed, OPTIMA will achieve the thermal performances at the thicknesses, densities and coverages specified, based on a nominal 28 lb. bag (see charts on corresponding specification sheets). For proper installation of OPTIMA, see our OPTIMA Installation Guide.

All coverage values are based on net area. Gross coverage will increase when adjusting for wall, floor or ceiling framing members and will vary based on the size and spacing of the framing members.
Please refer to the CertainTeed Lifetime Limited Insulation Warranty for OPTIMA® Fiber Glass Blowing Insulation.
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.