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R- 2.9 , 0.75-in x 4-ft x 8-ft Faced Polystyrene Board Insulation

Ratings & Reviews for R- 2.9 , 0.75-in x 4-ft x 8-ft Faced Polystyrene Board Insulation

4.5
636
Review
 4.5 out of 5
637 Reviews


90% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise the foam insulation boards for exceptional thermal performance and ease of use. Most highlight how simple they are to cut with basic tools like a razor knife and install without special expertise. Reviewers report measurable temperature improvements, with many noting significant drops in garage and shop temperatures. The lightweight, foil-facing design reflects heat effectively and works well for diverse projects from garage doors to windows and basement walls. Customers consistently describe it as great value and versatile for both large-scale and targeted applications. A few mention cutting creates fine particles, and some note the material requires careful handling, but these minor concerns are vastly outweighed by strong overall satisfaction.

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

Works great, easy to use.

Would Recommend

I live in south Carolina and have a metal roof on the shed that I work in. I insulated the ceiling with this and it keeps the shed MUCH cooler. I imagine it will help repel the cold in the winter too.

May 15, 2026
Verified Purchaser
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Good quality

Would Recommend

Good but compressed on edges in 1 place on 2 out 9

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Great product

Would Recommend

Quality

May 13, 2026
From R- 3.9 , 1-in x 4-ft x 8-ft Faced Polystyrene Board Insulation Verified Purchaser
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Foil faced 4x8 insulation

Would Recommend

Easy to cut to size need. Lite weight.

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Easy to work with

Would Recommend

Easy cut and flexible to work with

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Great product

Would Recommend

Very sturdy and great

May 4, 2026
From R- 3.9 , 1-in x 4-ft x 8-ft Faced Polystyrene Board Insulation Verified Purchaser
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Good choices on foamvoard

Would Recommend

Reasonable price for foamboard

May 2, 2026
Verified Purchaser
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Always good!

Would Recommend

Good product great price.

May 2, 2026
Verified Purchaser
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Works and easy to use

Would Recommend

Good for insulating under flooring

April 28, 2026
From R- 3.9 , 1-in x 4-ft x 8-ft Faced Polystyrene Board Insulation Verified Purchaser
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It’s hard to handle in the wind

Would Recommend

I like this foam board, it’s easy to work with.

April 27, 2026
Verified Purchaser
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Works as a good insulator

Would Recommend

Works as it should with ease of installation

April 25, 2026
From R- 3.9 , 1-in x 4-ft x 8-ft Faced Polystyrene Board Insulation Verified Purchaser
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Crap

Would Not Recommend

You were several weeks late on delivery only to give me the WRONG SHEETS! I order "FACED" and got just plain board. I WANT MY MONEY BACK OR DELIVER WHAT I ORDERED

April 25, 2026
From R- 3.9 , 1-in x 4-ft x 8-ft Faced Polystyrene Board Insulation Verified Purchaser
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Stopped a draft

Would Recommend

Used it on the door to my crawl space.

April 25, 2026
Verified Purchaser
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Cuts very easy for custom fit

Would Recommend

Product was as described and easy to work with

April 24, 2026
From R- 3.9 , 1-in x 4-ft x 8-ft Faced Polystyrene Board Insulation Verified Purchaser
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Store is very clean, with items in stock

Would Recommend

Great customer service

April 24, 2026
From R- 3.9 , 1-in x 4-ft x 8-ft Faced Polystyrene Board Insulation Verified Purchaser
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Priced kinda high

Would Recommend

Nice product

April 23, 2026
From R- 3.9 , 1-in x 4-ft x 8-ft Faced Polystyrene Board Insulation Verified Purchaser
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