Johns Manville R-11 Unfaced Fiberglass Batts

Formaledehyde-free, unfaced fiberglass batts designed for 2x4 wood-stud walls deliver R-11 thermal performance and sound control. Pre-cut to 23 in x 93 in, this 16-piece multi-pack covers 237.66 sq ft and installs easily by pressing between studs.

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Key Features:

• Designed for 2x4 Walls: Pre-cut 23 x 93 in batts fit 24-in on-center wood studs for standard 8-ft walls
• Unfaced, Formaldehyde-Free: No vapor barrier; can be added to existing insulation and supports healthier indoor air
• Energy & Sound Control: R-11 thermal performance helps reduce energy costs and dampen noise
• Durable Fiberglass: Will not rot, mildew, or corrode pipes, wiring, or metal studs
• Easy Installation: Compression-packaged batts press into place—no special tools required

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Specifications Table:

Specification	Details
Insulation Type	Fiberglass
R-Value	11
Faced/Unfaced	Unfaced
Length (Inches)	93
Width (Inches)	23
Thickness (Inches)	3.5
Coverage Area (Sq. Feet)	237.66
Package Count	16 pieces
Stud Spacing (Inches)	24
Framing Type	Wood studs
For Use in Walls	Yes
For Use in Basements	Yes
For Use in Attics	No
For Use in Ceilings	No
For Use in Floors	No
For Use in Crawlspaces	No
Vapor Retardant	No
Formaldehyde Free	Yes
Sound Barrier	Yes
ENERGY STAR Certified	Yes (program partner)
GREENGUARD Gold Certified	Yes
R-Value per Inch	3.1429
Package Type	Multi-pack
Bag Dimensions (L x W x D)	20 x 20 x 50
Package Weight (lbs.)	37.08
Warranty	1-year limited
UNSPSC	11162400
Maximum R-Value	11
Fits 2 x 4 Walls	Yes
Fits 2 x 6 Walls	No

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Frequently Asked Questions (FAQ):

Q: Can these batts be used in exterior 2x4 walls?
A: Yes. They are designed for 2x4 wood-stud walls with 24-in on-center spacing and provide R-11 thermal performance.

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Q: Do I need a separate vapor barrier?
A: Because these are unfaced batts (no vapor retarder), add a code-compliant vapor retarder if your local climate and building code require it.

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Q: Are these suitable for basements?
A: Yes, they are rated for use in basements. They are not intended for attics, ceilings, floors, or crawlspaces.

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Q: How much area does one package cover?
A: This multi-pack covers 237.66 square feet total and includes 16 pre-cut pieces.

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Q: Are there environmental certifications?
A: Yes—ENERGY STAR partner, GREENGUARD Gold Certified, and SCS Recycled Content certification; the batts are formaldehyde-free.

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Quiet comfort, tailored to your walls

These R-11 unfaced batts bring a serene hush and consistent warmth to everyday living spaces. The clean, formaldehyde-free fiberglass profile slides neatly into standard 2x4 walls, creating a refined envelope that heightens comfort without visual clutter. Pair with crisp drywall and natural wood trim to let the architecture breathe while acoustic calm takes the lead. It’s an effortless upgrade that feels decidedly luxe in its quiet efficiency.

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Upgrade your walls with Johns Manville R-11 batts for instant comfort, quieter rooms, and energy savings—add to cart today.