Johns Manville R-19 Kraft-Faced Fiberglass Roll Insulation, 75.07-sq ft Coverage, 23-in W x 39.16-ft L, Multi-Pack (B242S)R 19 Kraft Faced Fiberglass Roll Insulation, 75. 07 sq ft Boost wall and floor efficiency with Johns Manville R 19 kraft faced fiberglass roll insulation. Sized for 2x6 wood stud framing with a built in vapor retarder, it delivers reliable thermal and sound control in long, unobstructed bays. Key Features: Ready for 2x6 Walls: 23 in x 39. 16 ft roll fits 24 in on center wood studs for fast coverage Moisture Control: Kraft facing provides an integrated

R-19 Kraft-Faced Fiberglass Roll Insulation, 75.07-sq ft

Boost wall and floor efficiency with Johns Manville R-19 kraft-faced fiberglass roll insulation. Sized for 2x6 wood-stud framing with a built-in vapor retarder, it delivers reliable thermal and sound control in long, unobstructed bays.

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Key Features:

• Ready for 2x6 Walls: 23-in x 39.16-ft roll fits 24-in on-center wood studs for fast coverage
• Moisture Control: Kraft facing provides an integrated vapor retarder to help manage humidity
• Energy & Sound Performance: R-19 thermal value with sound-dampening fiberglass
• Easy Installation: Press in place and staple flanges as needed; cuts cleanly with a utility knife
• Healthy Home Certifications: Formaldehyde-free, GREENGUARD Gold and SCS certified

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Specifications Table:

Specification	Details
R-Value	19
Coverage Area	75.07 sq ft
Width	23 in
Length	39.16 ft
Thickness	6.5 in
Faced/Unfaced	Kraft faced
Stud Spacing	24 in on-center
Fits 2 x 6 Walls	Yes
Fits 2 x 4 Walls	No
For Use in Walls	Yes
For Use in Floors	Yes
For Use in Attics	No
For Use in Ceilings	No
For Use in Crawlspaces	No
For Use in Basements	No
For Use in Doors	No
For Use in Windows	No
For Use in Duct	No
For Use in Electrical	No
For Use in Garage Doors	No
For Use in Masonry	No
For Use in Plumbing	No
For Use in Vents	No
Insulation Type	Fiberglass
Framing Type	Wood studs
Vapor Retardant	Yes (kraft facing)
Reflective	No
Sound Barrier	Yes
Formaldehyde Free	Yes
ENERGY STAR Certified	Yes (program partner)
GREENGUARD Gold Certified	Yes
R-Value per Inch	2.92
Package Type	Multi-pack
Package Count	8
Total Package Quantity	8
Warranty	1-year limited
Bag Dimensions (L x W x D)	23.5 x 19 x 26 in
Package Weight	20.8 lb
UNSPSC	30141500

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Frequently Asked Questions (FAQ):

Q: Can this be used in 2x6 exterior walls?
A: Yes. It’s designed for 2x6 wood-stud walls with 24-in on-center spacing.

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Q: Is a separate vapor barrier required?
A: No. The kraft facing acts as a vapor retarder when installed with the facing toward the conditioned space.

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Q: What area does one roll cover?
A: Each roll covers 75.07 square feet.

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Q: Is it suitable for floors or ceilings?
A: It’s rated for floors and walls; it is not listed for attics or ceilings in this configuration.

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Q: What are the roll dimensions?
A: 23 inches wide, 39.16 feet long, and approximately 6.5 inches thick (R-19).

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Quiet Comfort, Seamlessly Wrapped

This kraft-faced insulation introduces a refined layer of calm, softening the acoustics while elevating thermal comfort. I love the clean, continuous roll—its 23-inch width slips elegantly between studs, creating a neat, uniform envelope. Pair it with warm natural woods and matte black accents for a tailored, modern shell. It’s a polished essential that underpins luxurious living from the inside out.

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Upgrade your walls with R-19 performance—choose this JM kraft-faced roll for faster installs and lasting comfort.