At a Glance
Coverage Area: 4 (sq ft)
Water Resistant
Use Location: IndoorGreenGuard R- 5 , 1-in x 2-ft x 2-ft Unfaced Foam Board Insulation
Item #871540 |
Model #100000048879
Can be used for packaging, crafts, and hobbies
Great for small home insulation projects
Easy to handle, cut, and install with no loose beads
Good compression (crush) resistance
Very low moisture absorbency
GreenGuard Insulation Board cannot be left exposed in an interior application and must be covered with an approved 15 minute thermal barrier
General | |||
|---|---|---|---|
Package Quantity | 48 | Insulation Type | Foam |
Use Location | Indoor | ||
Dimensions | |||
|---|---|---|---|
Actual Length (Feet) | 2 | Common Width (Feet) | 2 |
Actual Thickness (Inches) | 1 | Coverage Area (Sq. Feet) | 4 |
Actual Width (Feet) | 2 | Package Weight (lbs.) | 0.65 |
Common Length (Feet) | 2 | R-Value per Inch | 5 |
Common Thickness (Inches) | 1 | Maximum R-Value | 5 |
Features | |||
|---|---|---|---|
Fire Resistant | No | Sound Barrier | No |
Formaldehyde Free | Yes | Vapor Retardant | Yes |
Mold Resistant | No | Water Resistant | Yes |
Paintable/Stainable | Paintable | Facing Material | Unfaced |
Certifications | |||
|---|---|---|---|
CA Residents: Prop 65 Warning(s) | No | ENERGY STAR Certified | Yes |
Warranty | |||
|---|---|---|---|
Warranty | None | ||
Compatibility | |||
|---|---|---|---|
For Use in Basements | Yes | For Use in Floors | Yes |
For Use in Crawlspaces | Yes | For Use in Garage Doors | No |
For Use on Plastic | No | For Use in Masonry | Yes |
For Use on Metal | No | For Use in Plumbing | No |
For Use on Wood | Yes | For Use in Vents | No |
For Use in Ceilings | Yes | For Use in Walls | Yes |
For Use on Insulation | Yes | For Use in Windows | No |
For Use in Attics | Yes | Fits 2 x 4 Walls | Yes |
For Use in Doors | No | Fits 2 x 6 Walls | Yes |
For Use in Duct | No | For Use on Glass | No |
For Use in Electrical | No | ||
Miscellaneous | |||
|---|---|---|---|
UNSPSC | 30141500 | ||
Check out the Best Selling Board Insulation on Lowes.com
Ratings may include incentivized customer reviews.
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.
Customer review summary generated by AI, including incentivized reviews.Great Insulation Board for DIY Projects
This insulation sheet was lightweight, easy to cut, and simple to install. It fit my project needs perfectly and provided good insulation value. The board held its shape well during handling and installation. Overall, it’s a quality product at a reasonable price. I have no major complaints and would purchase it again for future projects.
Verified Purchaser
It is insular foam
It is insular foam
Verified Purchaser
Solid foam for crafting
Used for a craft project, good and sturdy foam!
Verified Purchaser
Great for multiple projects
Used in the past, perfect fit, bought again
Verified Purchaser
A different use
Used this for a craft project and it worked well.
Verified Purchaser
Good quality
Thick
Verified Purchaser
Worked great for my freezer!
The inside of my chest freezer lid came apart. So I took all the old insulation out and glued this to the inside top. Reattached the inside plastic top and it’s help up great! Like having a new freezer again!!
Verified Purchaser
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Can this be used outdoors underneath a bay window or does it have to be covered from weather elements?
Dale on September 27, 20250
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