Ratings & Reviews for Kingspan Insulation R- 5 , 1-in x 4-ft x 8-ft Unfaced Foam Board Insulation
Ratings may include incentivized customer reviews.
What Customers Are Saying
Customers overwhelmingly praise this insulation board for its ease of cutting, versatility, and durability. The foam cuts cleanly with standard tools like exacto blades and jigsaws, making it accessible for all skill levels. Reviewers highlight successful use across basement insulation, stage props, crafts, and specialty applications. Many describe it as sturdy and dense, maintaining thermal performance without adding bulk. While a few mention price increases and isolated quality concerns, the vast majority consider it reliable and well-suited for both insulation and creative projects.
Customer review summary generated by AI, including incentivized reviews.Kingspan GreenGuard insulation
I was surprised how easy this was to cut and install, and not it doesn’t make a mess like the cheaper styrofoam insulation. I would recommend using the correct plastic washer gaskets for install…makes it go up faster, especially when applying to a ceiling
Verified Purchaser
Heavy duty
Would RecommendReceived well
Verified Purchaser
multi-purposeful!
Would RecommendUsed for a craft project
Verified Purchaser
Typical foam board insulation sheet. Good stuff.
Price appears to have gone up. But works fine for intended purpose.
Verified Purchaser
only got 5 1" x 4ft x 8ft and then got 5 3/4 x 4ft x 8ft pieces when I ordered 10 of the 1 inch.
Verified Purchaser
Easy to install
Would RecommendThis insulation is very easy to install, just measure cut and place. And actually seems to work exceptionally well. I am a total amateur at these do it yourself projects and had no issue whatsoever using this product.
Verified PurchaserVerified Pro
Good choice for rigid insulation
Would RecommendGood choice for rigid insulation, easy to work with
Verified Purchaser
Measure twice cut once, use the right cutting tool
Would RecommendEase of use and ability to cut to size to fit whatever area you want to insulate. Using in the basement to insulate an area which is exposed to the elements keeping the cold exposure limited allowing for less heat loss in the basement
Verified PurchaserVerified Pro
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Would RecommendWe used these for deco, easy to cut, cuts clean with a box knife
Verified Purchaser