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Fiberglass roll insulation

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)

★★★★★  5.0

In Stock

$69.09

$34.55

Quantity:

SKU: A143392479

Product Detail

Description

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 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

Specifications Table:

Specification Details
R-Value19
Coverage Area75.07 sq ft
Width23 in
Length39.16 ft
Thickness6.5 in
Faced/UnfacedKraft faced
Stud Spacing24 in on-center
Fits 2 x 6 WallsYes
Fits 2 x 4 WallsNo
For Use in WallsYes
For Use in FloorsYes
For Use in AtticsNo
For Use in CeilingsNo
For Use in CrawlspacesNo
For Use in BasementsNo
For Use in DoorsNo
For Use in WindowsNo
For Use in DuctNo
For Use in ElectricalNo
For Use in Garage DoorsNo
For Use in MasonryNo
For Use in PlumbingNo
For Use in VentsNo
Insulation TypeFiberglass
Framing TypeWood studs
Vapor RetardantYes (kraft facing)
ReflectiveNo
Sound BarrierYes
Formaldehyde FreeYes
ENERGY STAR CertifiedYes (program partner)
GREENGUARD Gold CertifiedYes
R-Value per Inch2.92
Package TypeMulti-pack
Package Count8
Total Package Quantity8
Warranty1-year limited
Bag Dimensions (L x W x D)23.5 x 19 x 26 in
Package Weight20.8 lb
UNSPSC30141500

Frequently Asked Questions (FAQ):

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

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.

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

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

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

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 rollits 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. Its a polished essential that underpins luxurious living from the inside out.

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

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