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

What Customers Are Saying

Customers overwhelmingly praise this foam board for exceptional insulation performance, with many reporting it successfully prevented frozen pipes, sealed attic openings, and insulated tight spaces. Reviewers consistently highlight how easily it cuts with a razor knife and fits irregular areas without special tools. The product's versatility extends far beyond traditional insulation—customers use it for model-making, sound deadening, and craft projects. Most find it a reliable, cost-effective solution for small-scale DIY work. A few note minor edge imperfections during cutting, though overall satisfaction remains exceptionally high.