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Best Insulation for Exterior Walls

Do you need to insulate the walls of your home? Because the exterior walls are some of the most significant sources of energy loss in homes, it’s essential that they are properly insulated. But what type of insulation should be installed in your walls?

What Is the Best Exterior Wall Insulation?

There are many different types of insulation, so it can be difficult to determine which material is best for your wall insulation project. Although it’s recommended to call local professionals and have them assess your situation, it can be helpful to have a little bit of basic information on the front end!

A few main types of insulation include:

  • Blown-in (such as fiberglass and loose-fill cellulose)
  • Blanket (such as fiberglass batts)
  • Spray (such as spray foam or wet spray cellulose)

Which type of insulation is best for exterior walls?

For retrofit (re-insulation) jobs, blown-in insulation is often used. When installed using the dense-pack technique, blown-in insulation in exterior walls can help provide air sealing. It can be added to exterior walls without much disturbance to finished areas of your home.

For new construction and remodeling jobs (or other projects where your wall cavities will be open), spray insulation can be used, such as a two-part spray foam or wet spray cellulose. If the wall cavities aren’t open, a material like injectable spray foam insulation may be used.

There are also foam sheathing and advanced wall framing method options. Your insulation company will be able to determine the best types of insulation and techniques for your particular home.

Visit the Department of Energy online to learn more about exterior wall insulation and where in your home you should insulate.

Wall Insulation in Chicagoland

If you live in Chicago or a surrounding area in Illinois, ThermaSeal / Lakeside Insulation is a good name to know! We have experience insulating walls and can install various types of insulation, from blown-in fiberglass to spray foam. Our experts can help you start saving money and living more comfortably—this winter and beyond—with the right exterior wall insulation solutions.

Contact us today to learn more about our services or to get a free estimate for your project!

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Great job – Installers were great and appreciated the honesty of the sales guy.

Charles in Hoffman Estates, IL
Products We Install
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Insulation

Our team installs both batt and blown-in fiberglass insulation.

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Waterproofing

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

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Levelrock

At Thermaseal / Lakeside Insulation, we understand the role a floor plays within a building system by controlling sound and fire.

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