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R- 21 Attic Wall Unfaced Reflective Roll Insulation 33.3-sq ft ( 16-in W x 25-ft L ) Individual pack

Ratings & Reviews for Reflectix R- 21 Attic Wall Unfaced Reflective Roll Insulation 33.3-sq ft ( 16-in W x 25-ft L ) Individual pack

4.8
467
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Review
  4.8 out of 5
467 Reviews


97% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise this insulation for exceptional ease of installation and versatility. Reviewers consistently note it cuts easily, requires no special tools, and conforms to irregular surfaces, making it ideal for DIY projects in garages, RVs, camper windows, and ductwork. Many highlight its effectiveness as a radiant heat barrier and lightweight flexibility. A few note it functions as a radiant barrier rather than traditional bulk insulation, clarifying expectations about thermal performance. Overall, customers consider it a reliable, multi-purpose solution.

Customer review summary generated by AI, including incentivized reviews.
467 Customer Reviews

perfect match for my project

 Would Recommend

Excellent. Highly recommend!

November 4, 2026
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insulation of upstairs of house

I have been using this insultaion in my upstairs remodel of an old farmhouse. So easy to handle. Easy to install by myself. And works as it should with insulating the upsairs

October 26, 2026
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Easy to use!

 Would Recommend

Used to insulate the inside of my well house to keep from freezing.

October 25, 2026
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Dfox

Easy to install

October 21, 2026
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Difference Maker

 Would Recommend

Makes a huge difference in my RV. Helps keep cool in the Summer and more warm in the winter.

October 19, 2026
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So many uses!

 Would Recommend

So many different uses. I used to insulated the stairs of my attic. Great quality!

October 17, 2026
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Works great

 Would Recommend

Works as advertised and as needed.

October 14, 2026
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Great item

 Would Recommend

Easy to use and provides good insulation

October 7, 2026
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Worth buying

 Would Recommend

Bought this to help insulate my garage. Easy to put up and i just secured it with staples. With the storms coming through the last few days, I can tell a difference already

September 27, 2026
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Great product

 Would Recommend

Bought this product for a chicken coop project worked great

September 7, 2026
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Great product easy to install, good insulation

September 6, 2026
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