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R- 5 , 1-in x 2-ft x 2-ft Unfaced Foam Board Insulation

Ratings & Reviews for GreenGuard R- 5 , 1-in x 2-ft x 2-ft Unfaced Foam Board Insulation

4.7
282
Review
 4.7 out of 5
282 Reviews


94% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

The foam insulation product is a versatile option that provides effective insulation and sound-deadening properties. Customers found it easy to work with, using it for various projects like sealing drafts, insulating attics, and more. While a few had minor quality issues, the majority of reviews were positive, describing the foam as a good value and practical choice for homeowners and DIY enthusiasts.

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

East to work with and no dust like sheetrock

Would Recommend

Easy to cut and fill in holes while providing insulated properties

April 16, 2026
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Great size.

Would Recommend

Perfect size.

April 12, 2026
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Easy to work with foam board.

Would Recommend

This foam board is easy to cut and is designed not to give off toxic fumes if in a fire.

April 10, 2026
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I would definitely use this again!!!

Would Recommend

This has helped a ton with keeping the inside air in and the outside air out, which helps with the power bill. I'm using in to cover up the side panels of a window ac unit. It's fairly easy to cut with a sharp knife, but it can get a little crooked and break off in smaller pieces. But i used all of it!

April 6, 2026
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Sturdy piece of foam

Would Recommend

Easy to use, needed for a craft project for a party and it worked phenomenally. Didn’t fall apart or tear.

April 6, 2026
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Easy to cut and work with.

Would Recommend

Used to insulate piping under my new super high efficiency condensing tankless water heater. It does not crumble like other insulating products.

April 2, 2026
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Product ok- Pricey!!!

Would Not Recommend

Product is fine....price is way out of line. Almost doubled since I purchased the last ones!

March 14, 2026
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Making spacers

Easy-to-use

March 12, 2026
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GreenGuard R- 5 , 1-in x 2-ft x 2-ft Unfaced Foam

Would Recommend

I use this to cover over my dropdown attic stairs entry hole going into my attic. I use 3 of them covering the entire length of the opening to the attic for more insulation.

March 11, 2026
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Fool Proof

Would Recommend

Easy to use, this helped me reduce the draft in and old fireplace. Easy to cut with a sharp blade

March 1, 2026
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Prep

Would Recommend

Prep

February 24, 2026
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Insulation board, is insulation board

Works fine

February 17, 2026
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Easy to cut to desired length

Just enough for decent insulation

February 16, 2026
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