At a Glance

Coverage Area: 27.25 (sq ft)

Use Location: Indoor/Outdoor

Formaldehyde Free

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Perma "R" Products R- 2.9 , 0.75-in x 1.13-ft x 4.0-ft Unfaced Polystyrene Board Insulation

Name: Perma "R" Products R- 2.9 , 0.75-in x 1.13-ft x 4.0-ft Unfaced Polystyrene Board Insulation
Brand: Perma "R" Products
SKU: 3014185
Rating: 4.4 (278 reviews)

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4.4

278

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Shipping Details

General
Package Quantity	1	Insulation Type	Polystyrene
Use Location	Indoor/Outdoor

Dimensions
Actual Length (Feet)	4	Common Width (Feet)	1.13
Actual Thickness (Inches)	0.75	Coverage Area (Sq. Feet)	27.25
Actual Width (Feet)	1.13	Package Weight (lbs.)	1.7
Common Length (Feet)	4	R-Value per Inch	3.9
Common Thickness (Inches)	0.75	Maximum R-Value	2.9

Features
Fire Resistant	No	Vapor Retardant	No
Formaldehyde Free	Yes	Water Resistant	No
Mold Resistant	No	Facing Material	Unfaced
Sound Barrier	No

Certifications
CA Residents: Prop 65 Warning(s)	No	GREENGUARD Gold Certified	No
ENERGY STAR Certified	No

Warranty
Warranty	Limited lifetime

Compatibility
For Use in Basements	Yes	For Use in Floors	No
For Use in Crawlspaces	Yes	For Use in Garage Doors	Yes
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	No	For Use in Walls	Yes
For Use on Insulation	Yes	For Use in Windows	Yes
For Use in Attics	Yes	Fits 2 x 4 Walls	Yes
For Use in Doors	No	Fits 2 x 6 Walls	No
For Use in Duct	No	For Use on Glass	No
For Use in Electrical	No

Miscellaneous
UNSPSC	30141500

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Review

4.4 out of 5

278 Reviews

93% Recommend this product

Ratings may include incentivized customer reviews.

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What Customers Are Saying

The foam board insulation is generally easy to use and install, with effective insulation properties that help regulate temperature, especially in hot environments. While some customers found the boards to be a bit fragile, the product was appreciated for its versatility in various home improvement and DIY projects beyond just insulation.

Customer review summary generated by AI, including incentivized reviews.

278 Customer Reviews

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Vacation Bible School Projects

worked perfectly for our Vacation Bible School Projects

tistanleJune 22, 2026
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Would Recommend

Perfect for our new addition - metal roof

ATVAJune 15, 2026
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Perma "R" Products R- 2.9 , 0.75-in x 1.13-ft x 4.0-ft Unfaced Polystyrene Board Insulation

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