R-11 Kraft-Faced Fiberglass Batt Insulation

Johns Manville R-11 kraft-faced fiberglass batts are pre-cut for standard 2x4 wood-stud wall cavities to help improve comfort and sound control. The kraft facing provides a built-in vapor retarder for moisture management in wall and basement applications.

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Key Features:

• Built-In Vapor Retarder: Kraft facing helps manage moisture in concealed wall applications.
• Pre-Cut for Fast Installs: Sized for 16-in on-center 2x4 wood-stud walls and standard 9-ft wall height.
• Thermal + Sound Control: R-11 insulation helps boost energy efficiency and includes sound barrier performance.
• Formaldehyde-Free Fiberglass: Designed for indoor comfort with formaldehyde-free fibers.
• Durable, Noncorrosive Material: Resists rot, mildew, and deterioration and won’t corrode pipes, wiring, or metal studs.

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Specifications Table:

Specification	Details
Insulation Type	Fiberglass
Maximum R-Value	11
R-Value per Inch	3.1429
Faced/Unfaced	Kraft faced
Vapor Retardant	Yes
Sound Barrier	Yes
Formaldehyde Free	Yes
ENERGY STAR Certified	Yes
GREENGUARD Gold Certified	Yes
Coverage Area (Sq. Feet)	155
Width (Inches)	15
Length (Inches)	93
Thickness (Inches)	3.5
Stud Spacing (Inches)	16
Fits 2 x 4 Walls	Yes
Fits 2 x 6 Walls	No
Framing Type	Wood studs
Total Package Quantity	16
Package Type	Individual pack
Package Count	16
Bag Dimensions (L x W x D)	15.5 x 20 x 49
Package Weight (lbs.)	24.18
For Use in Walls	Yes
For Use in Basements	Yes
For Use in Crawlspaces	No
For Use in Ceilings	No
For Use in Attics	No
For Use in Floors	No
For Use in Masonry	No
CA Residents: Prop 65 Warning(s)	No
UNSPSC	11162400

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Frequently Asked Questions (FAQ):

Q: What wall framing does this batt fit?
A: It’s sized for 2x4 wood-stud walls with 16-in on-center stud spacing.

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Q: Does it include a vapor barrier?
A: Yes. It is kraft-faced, which acts as a vapor retarder for moisture control.

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Q: Where can I use this insulation?
A: It is listed for use in walls and basements; it is not listed for attics, ceilings, floors, or crawlspaces.

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Q: How is it installed?
A: Press the batt between studs; staple the kraft-facing tabs to framing if additional securing is needed.

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Q: Is it formaldehyde-free and does it have indoor air quality certifications?
A: Yes—listed as formaldehyde-free and GREENGUARD Gold Certified.

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Quiet Luxury, Built Into the Walls

Think of insulation as the invisible couture of a room—shaping how a space feels long before you choose a paint color. These kraft-faced R-11 fiberglass batts slip neatly into 2x4 walls, adding a hush of sound control and a layer of thermal calm that makes every finish feel more intentional. I love the pragmatic beauty of the kraft facing: a warm, tailored surface that doubles as a vapor retarder—function dressed with purpose. Use it to elevate bedrooms, offices, and basement retreats into spaces that feel serene, polished, and unmistakably well-made.

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Upgrade your walls with Johns Manville R-11 kraft-faced batts for easier installs, better comfort, and quieter rooms.