Name: Johns Manville R- 19 Wall Kraft faced Fiberglass Roll Insulation 75.07-sq ft ( 23-in W x 39.17-ft L ) Individual pack
Brand: Johns Manville
SKU: 3012098
Price: 54.82 USD
Rating: 4.7 (1332 reviews)

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Johns Manville kraft-faced formaldehyde-free™ fiber glass insulation is paper-faced to help control moisture in concealed applications such as exterior walls.

Kraft-faced fiberglass roll insulation for use in 2x6 wood-framed walls and floors, and provides a built-in vapor barrier for moisture control
Improves energy efficiency and provides sound control
Rolls are designed for long, unobstructed spaces with 24-in on-center stud spacing
Simple to install, press in place between studs and staple tabs to framing if additional securement is required
Will not rot, mildew or deteriorate and is noncorrosive to pipes, wiring and metal studs
JM is a partner of the Seal and Insulate with ENERGY STAR program
SCS Recycled Content certification
GREENGUARD Gold Certified for office indoor air quality and SCS Certified for home indoor air quality

General
Package Type	Individual pack	Package Count	1
Total Package Quantity	1	Framing Type	Wood studs
Insulation Type	Fiberglass

Dimensions
Bag Dimensions (L x W x D)	23.5 x 19 x 26	Thickness (Inches)	6.5
Coverage Area (Sq. Feet)	75.07	Width (Inches)	23
Length (Feet)	39.17	R-Value per Inch	2.9231
Package Weight (lbs.)	18.42	Maximum R-Value	19

Features
Faced/Unfaced	Kraft faced	Sound Barrier	Yes
Formaldehyde Free	Yes	Stud Spacing (Inches)	24
Reflective	No	Vapor Retardant	Yes

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

Compatibility
For Use in Basements	No	For Use in Garage Doors	No
For Use in Crawlspaces	No	For Use in Masonry	No
For Use in Ceilings	No	For Use in Plumbing	No
For Use in Attics	No	For Use in Vents	No
For Use in Doors	No	For Use in Walls	Yes
For Use in Duct	No	For Use in Windows	No
For Use in Electrical	No	Fits 2 x 4 Walls	No
For Use in Floors	Yes	Fits 2 x 6 Walls	Yes

Miscellaneous
UNSPSC	30141500

Check out the Best Selling Roll Insulation on Lowes.com

Review

4.7 out of 5

1332 Reviews

96% Recommend this product

Ratings may include incentivized customer reviews.

+ 34 images

What Customers Are Saying

This insulation product offers effective thermal and sound insulation, with a design that makes it easy to handle and install. Customers report it provides good value and performs well in keeping homes comfortable year-round. The encapsulated design helps reduce skin irritation compared to traditional fiberglass insulation.

Customer review summary generated by AI, including incentivized reviews.

1332 Customer Reviews

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Customer Sentiment

Customer liked

No problems.

Would Recommend

Works as advertised. No problems.

MichaelWestenJanuary 9, 2026
From R- 13 Wall Kraft faced Fiberglass Roll Insulation 40-sq ft ( 15-in W x 32-ft L ) Individual pack Verified Purchaser

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Quality insulation.

Would Recommend

Easy to install.

RomanJanuary 3, 2026
From R- 13 Wall Kraft faced Fiberglass Roll Insulation 40-sq ft ( 15-in W x 32-ft L ) Individual pack Verified Purchaser

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Best price around

Would Recommend

Works great. I love the unfoldable flaps that help hold it in place

TsmallsDecember 31, 2025
From R- 13 Wall Kraft faced Fiberglass Roll Insulation 40-sq ft ( 15-in W x 32-ft L ) Individual pack Verified Purchaser

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Johns Manville R- 19 Wall Kraft faced Fiberglass Roll Insulation 75.07-sq ft ( 23-in W x 39.17-ft L ) Individual pack

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