The 6 Best Foil Insulations

Updated March 15, 2017 by Chase Brush

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We spent 27 hours on research, videography, and editing, to review the top choices for this wiki. Good for heat retention in the winter and for preventing gain in the summer, foil insulation can be an effective means of reducing radiant heat transfer across open spaces, such as the attic or basement, and thus reducing energy costs. These best-selling options incorporate reflective materials on bubble or foam wrap, are designed to resist fire and moisture, and can be used indoors or outdoors. When users buy our independently chosen editorial picks, we may earn commissions to support our work. Skip to the best foil insulation on Amazon.

6. RadiantGUARD Reflex-Air

This RadiantGUARD Reflex-Air is capable of catching 95 percent of radiant heat in your home or garage, offering an economical way of adding a little extra insulation to either. The well-made material won't compress, collapse or disintegrate, even after years of use.
  • made of metalized polyester film
  • covers 500 square feet
  • a little pricier than other options
Brand RadiantGUARD
Model RSBR-48-125
Weight pending
Rating 3.9 / 5.0

5. Reflectix ST16025

The staple tab Reflectix ST16025 is non-toxic, environmentally friendly, and fiber free, making it a safe option to use in space where kids or anyone else is regularly present. It's also fairly lightweight, so it won't compromise whatever structure it's put on.
  • good for crawl spaces
  • manufactured in china
  • not great for high heat applications
Brand Reflectix
Model ST16025
Weight 1.8 pounds
Rating 4.1 / 5.0

4. Reach Barrier DD48025

The material in this Reach Barrier DD48025 can effectively retain heat, but it also helps reduce sound in spaces where there's a lot of activity. It's extremely easy to install, and can be cut and customized to fit many applications.
  • meets astm standards
  • suitable for use on food smokers
  • thinner than some other options
Brand Reach Barrier
Model DD48025
Weight 0.3 ounces
Rating 4.4 / 5.0

3. InfraStop Double Bubble

The plastic and foil in the InfraStop Double Bubble is Class A fire rated, so you don't have to worry about it posing a safety hazard in your home on those hot summer days. It also features an extra thick layer of polyethylene for maximum air absorption.
  • great for padding walls and flooring
  • also blocks out vapors
  • good value for the price
Brand InfraStop
Model ISFDF48025
Weight 7.9 pounds
Rating 4.8 / 5.0

2. AES NASA Tech

Representing one of the strongest options on the market, the AES NASA Tech is a commercial-grade insulator that, once up, shouldn't need replacing. The 5-layer energy shield is closely bonded together with Mylar and nylon scrim, making it virtually impossible to tear.
  • blocks 97 percent of heat
  • outer layer is pure aluminum
  • drastically reduces energy bills
Brand AES
Model pending
Weight pending
Rating 4.8 / 5.0

1. Reflectix BP48010

Drive down those high heat and A/C costs with the Reflectix BP48010, which is rated for commercial applications but will be just as effective in residential homes. Use it on your garage doors, the windows in your RV, or anywhere else that needs a little extra protection.
  • seven layer design
  • lightweight and fiber free
  • can be reapplied with the right tape
Brand Reflectix
Model BP48010
Weight 2.6 pounds
Rating 4.5 / 5.0

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Last updated on March 15, 2017 by Chase Brush

Chase is a freelance journalist with experience working in the areas of politics and public policy. Currently based in Brooklyn, NY, he is also a hopeless itinerant continually awaiting his next Great Escape.

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