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What Is Blanket Insulation?

Do you need to increase the energy efficiency of your home? Insulation is one way to do this. Whether you’ve been talking to insulation contractors or doing research online, you may have come across the term “blanket insulation.”

What is blanket insulation? Keep reading to learn more!

About Blanket Insulation

A commonly used type of insulation, blanket insulation comes in the form of batts or rolls. Batt insulation is available in pre-cut panels. Roll insulation comes with and without facing, and continuous rolls can be cut and trimmed to fit the space you need to fill. Batts and rolls can also be made from mineral (rock and slag) wool, plastic fibers, and natural fibers (such as cotton or wool).

Blanket insulation is typically installed in spaces without many obstructions (pipes, wiring, etc.)—such as unfinished walls (including foundation walls), floors and ceilings. It is fitted between joists, studs and beams.

Blanket insulation can also be used as acoustical insulation for commercial buildings, as well as thermal insulation for areas inside the home (often in attics). In fact, we have found that blanket insulation in the form of fiberglass batts is one of the best types of insulation to use for sound control!


The R-value of fiberglass blanket insulation depends on its thickness. It has an R–value of approximately R-2.9 to R-3.8 per inch of thickness. High-performance fiberglass blanket and batt insulation have R-values between R-3.7 and R-4.3 per inch of thickness.

R-value can be a bit difficult to understand—but you’ll get all the information you need talking to an insulation professional.

Insulation Installation in the Chicago Area

If you need to insulate your home in Chicagoland, call ThermaSeal/Lakeside Insulation! Our family helps yours save money and stay comfortable all year long with the right insulation.

Get in touch with us to learn more about our services or if you’re ready for a FREE estimate—fill out the form in the sidebar or call 800-836-2535!    

Products We Install
Fiberglass Insulation

Fiberglass insulation is often the most economical of insulation choices to buy and easiest to install.


Help prevent mold and excessive moisture infiltration in homes you build with our waterproofing services.

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