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R- 21 Attic Wall Unfaced Reflective Roll Insulation 400-sq ft ( 48-in W x 100-ft L ) Individual pack

Ratings & Reviews for Reflectix R- 21 Attic Wall Unfaced Reflective Roll Insulation 400-sq ft ( 48-in W x 100-ft L ) Individual pack

4.6
141
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Review
  4.6 out of 5
142 Reviews


95% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

The reflective insulation product is widely praised for being easy to work with, install, and cut to fit. Many customers report significant improvements in temperature regulation, with the insulation helping to keep spaces cooler in the summer and warmer in the winter. The product is described as versatile and suitable for use in a variety of applications. Customers appreciate the lightweight and flexible nature of the insulation, as well as the fact that it does not cause irritation like traditional fiberglass insulation. A few customers noted minor issues, but the vast majority of reviews highlight the effectiveness and value of this product.

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

Awesome product

 Would Recommend

Super easy to install

November 8, 2025
From R- 21 Attic Wall Unfaced Reflective Roll Insulation 400-sq ft ( 48-in W x 100-ft L ) Individual pack Verified Purchaser
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less expensive faster shipping

 Would Recommend

less expensive faster shipping

October 19, 2025
From R- 21 Attic Wall Unfaced Reflective Roll Insulation 400-sq ft ( 48-in W x 100-ft L ) Individual pack Verified Purchaser
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just what i needed

 Would Recommend
September 19, 2025
From R- 21 Attic Wall Unfaced Reflective Roll Insulation 400-sq ft ( 48-in W x 100-ft L ) Individual pack Verified Purchaser
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Attic insulation

 Would Recommend

Good quality and easy to install

March 14, 2025
From R- 21 Attic Wall Unfaced Reflective Roll Insulation 400-sq ft ( 48-in W x 100-ft L ) Individual pack Verified Purchaser
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As advertised

 Would Recommend
October 20, 2024
From R- 21 Attic Wall Unfaced Reflective Roll Insulation 400-sq ft ( 48-in W x 100-ft L ) Individual pack Verified Purchaser
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Works as specified.

 Would Recommend

Works as specified. The roll was awesome for use.

October 9, 2024
From R- 21 Attic Wall Unfaced Reflective Roll Insulation 400-sq ft ( 48-in W x 100-ft L ) Individual pack Verified Purchaser
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Do not need fiberglass anymore!!!!!

 Would Recommend

environmental, safe to use easy to install

September 3, 2024
From R- 21 Attic Wall Unfaced Reflective Roll Insulation 400-sq ft ( 48-in W x 100-ft L ) Individual pack Verified Purchaser
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Not correct length

 Would Not Recommend

I bought 4 rolls. All 4 were less than 100’ long. All came out between 95’ and 98’. The product does work but being shorted sucks

August 20, 2024
From R- 21 Attic Wall Unfaced Reflective Roll Insulation 400-sq ft ( 48-in W x 100-ft L ) Individual pack Verified Purchaser
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Easy to use, but...

 Would Recommend

I have ordered this item twice. Good product, easy to use, but..the first roll was 10 inches short of 100 feet, and the second roll was 8 inches short of 100 feet. So I had a gap after installation of my last sheet.

July 20, 2024
From R- 21 Attic Wall Unfaced Reflective Roll Insulation 400-sq ft ( 48-in W x 100-ft L ) Individual pack Verified Purchaser
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Good Experience with this product.

 Would Recommend
July 1, 2024
From R- 21 Attic Wall Unfaced Reflective Roll Insulation 400-sq ft ( 48-in W x 100-ft L ) Individual pack Verified Purchaser
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Follow mfg. recommendations.

 Would Recommend

Have used reflective insulation for a very long time. When installed per mfg recommendations it performs extremely well.

June 5, 2024
From R- 21 Attic Wall Unfaced Reflective Roll Insulation 400-sq ft ( 48-in W x 100-ft L ) Individual pack Verified Purchaser
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Not “unfaced”

 Would Not Recommend

Is doublesided, not unfaced.

April 13, 2024
From R- 21 Attic Wall Unfaced Reflective Roll Insulation 400-sq ft ( 48-in W x 100-ft L ) Individual pack
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Would Recommend

Love the product , but there's not a 100 ft on the roll. Order some extra if you're figuring close like I was!!

March 27, 2024
From R- 21 Attic Wall Unfaced Reflective Roll Insulation 400-sq ft ( 48-in W x 100-ft L ) Individual pack
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Makes a difference!!!

 Would Recommend

Veri effective against heat!

March 25, 2024
From R- 21 Attic Wall Unfaced Reflective Roll Insulation 400-sq ft ( 48-in W x 100-ft L ) Individual pack Verified Purchaser
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Highly recommend!

 Would Recommend

Great product, we noticed an immediate difference once it was installed. I highly recommend installing it as a base layer for you metal roof.

March 20, 2024
From R- 21 Attic Wall Unfaced Reflective Roll Insulation 400-sq ft ( 48-in W x 100-ft L ) Individual pack Verified Purchaser
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Easy to install

 Would Recommend

Incredible product

March 18, 2024
From R- 21 Attic Wall Unfaced Reflective Roll Insulation 400-sq ft ( 48-in W x 100-ft L ) Individual pack Verified Purchaser
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