CertainTeed Sustainable Insulation - Kraft Faced Fiberglass, R-38C, 10¼ in. x 15 in. x 48 in. (35 sq. ft / bag)

Certainteed Fiberglass insulation delivers exceptional energy efficiency and thermal performance that result in more comfortable living spaces and lower energy costs for homeowners.  Heat constantly moves to colder  areas, which is why homes need thermal resistance (measured by R-Value) between the indoors and outdoors. The higher the R-Value, the greater the insulating power.

CertainTeed fiberglass insulation is compression packaged for ease of handling and comes in a wide range of R-Values, sizes and facings. It’s critical to determine the recommended R-Value according to your region. However, code is a recommended minimum.  

Certainteeds line of Sustainable Insulation® is just such a product. It is made with a renewable, plant-based binder, and does not have any formaldehyde, harsh acrylics, dyes or unnecessary fire-retardant chemicals added. What’s more, the manufacturing process for Sustainable Insulation requires less water and consumes less energy than standard processes.  Sustainable Insulation can save 12 times as much energy in the first year as the energy used to produce it.