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Top 14 Best Insulation For Exterior Wall 2023

David Raum
  Apr 1, 2023 9:14 PM

When it comes to insulating your home, you want to make sure you use the best possible materials for the job - especially when it comes to exterior walls. There are a few different options available, and each has its own set of pros and cons. In this article, we'll take a look at the best insulation for exterior walls, so you can make an informed decision for your home.


Our Top Picks

Best Overall: Owens Corning R-15 Pink Kraft Faced Fiberglass Insulation Roll 15 in. x 24 ft.

This Owens Corning R-15 Pink Kraft Faced Fiberglass Insulation Roll is easy to install in both exterior and interior 2x4 walls.

Best Budget: INSULATION MARKETPLACE SmartSHIELD -3mm 48inx10ft ReflectiveINSULATION roll

Reduces heat transfer from attic to living space. Keeps your home cooler in the summer and warmer in the winter.

Best Value: 1000sqft (25.5 inch Rafter Cut) of NASA TECH Commercial Grade Perforated No Tear Green Energy Radiant Barrier Reflective Insulation

1000sqft (25.5 inch Rafter Cut) of NASA TECH Commercial Grade Perforated No Tear Green Energy Radiant Barrier Reflective Insulation Solar Attic Foil Roof Attic House Wrap SCIF RIFD

Editor's Choice: Owens Corning 1188 SQFT 10 Bags of R 19 Kraft Faced 23 by 93 Fiberglass Batt Fits 2X6 Exterior Walls

 Keeps your home at a comfortable temperature year-round. Reduces energy bills by keeping heat in during winter and out during summer.


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1
  • SCORE
    9.6
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    Owens Corning
2
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    9.4
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    US Energy Products
3
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    9.4
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    Tondiamo
4
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    9.2
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  • Brand
    INSULATION MARKETPLACE
5
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    9.2
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    AES
6
  • SCORE
    9.2
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    US Energy Products
7
  • SCORE
    8.8
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    AES
8
  • SCORE
    8.8
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    Owens Corning
9
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    8.8
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  • Brand
    Selkirk Metalbestos
10
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    8.6
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    URBEST

Last update on 2023-04-01 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API

3.3
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FAQs

What R value is best for exterior walls?

The best R value for exterior walls depends on the climate. In colder climates, a higher R value is necessary to keep the heat in. In warmer climates, a lower R value is necessary to keep the heat out.

How thick should external wall insulation be?

There is no definitive answer to this question as the thickness of external wall insulation will vary depending on the specific project and the desired results. However, most experts agree that a thickness of between 50 and 100mm is typically ideal for external wall insulation.

What material is used for external wall insulation?

External wall insulation is most commonly made from EPS, or expanded polystyrene. EPS is a lightweight, rigid material that is easy to work with and provides good insulation properties.

What is the highest rated insulation?

There is no definitive answer to this question as it depends on a number of factors, including the specific product being compared and the intended application. That said, many experts believe that rigid foam insulation is generally more effective than panel insulation, particularly when it comes to preventing heat loss.


Conclusion

The best insulation for exterior walls comes down to what you need and what you are looking for in an insulation. If you need something that is going to be cheap and easy to install, then fiberglass is the way to go. If you need something that is more durable and will last longer, then spray foam is the better option.