R-13 Kraft-Faced Fiberglass Batt Wall Insulation

Johns Manville (JM) R-13 kraft-faced fiberglass batt insulation is pre-cut for standard 2x4 wall cavities to help improve comfort, energy efficiency, and sound control. The kraft facing acts as a built-in vapor retarder for added moisture control in many wall applications.

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Key Features:

• Precut 2x4 Wall Fit: Sized for standard wall cavities to speed installation in wood-framed construction
• Built-In Vapor Retarder: Kraft facing helps manage moisture when installed correctly
• Energy & Sound Benefits: Helps reduce heat loss and improves sound control between spaces
• Formaldehyde-Free Fiberglass: Designed for indoor comfort applications without added formaldehyde
• Versatile Use: Suitable for insulating interior/exterior walls and other framed cavities where R-13 is specified

Please check the Product Data Sheet Here

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Specifications Table:

Specification	Details
Brand	JM
Insulation R-Value	R-13
Insulation Type	Batt
Material	Fiberglass
Facing	Kraft faced
Faced or Unfaced	Faced
Product Width (in.)	15-1/4 in.
Product Length (in.)	93 in.
Coverage Area (sq. ft.)	108.33 sq ft
Fits Size	2 x 4 Wall
Insulation Features	Friction Fit; Soundproofing Insulation; Vapor Retardant
Insulation Location	Exterior Wall; Interior Wall
Product Thickness (in.)	3.5 in.
Pack Size	1
Pieces per Bag	11
Product Weight (lb.)	26.2 lb
Bag Size	4.08 ft. x 16.5 in. x 15 in.
Batt/Roll Size	7.75 ft. x 15 in.
Compatible Install Surface	Concrete; Copper Pipes; Existing Drywall; Existing Insulation; Fiberglass; Metal; PVC/CPVC Pipes; Pex Pipes; Plywood; Tile Flooring; Wood
Formaldehyde Free	Yes
Warranty Information	N/A

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Frequently Asked Questions (FAQ):

Q: What wall framing is this insulation designed for?
A: It’s intended for 2 in. x 4 in. wall cavities (commonly 16 in. on-center framing).

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Q: Does it include a vapor barrier?
A: Yes. The kraft facing provides a built-in vapor retarder for moisture control.

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Q: How is it installed?
A: Batts are typically friction-fit between studs; the facing can be stapled to framing as needed for secure placement.

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Q: Where can it be used?
A: It’s commonly used in interior and exterior framed wall cavities; confirm suitability for your specific application and local code requirements.

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Q: Is it formaldehyde-free?
A: Yes—this JM fiberglass batt insulation is listed as Formaldehyde-free™ / formaldehyde-free.

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Quiet Comfort, Beautifully Built In

Insulation is the invisible luxury—what you don’t see is what you feel. These R-13 kraft-faced fiberglass batts slip neatly into 2x4 walls, bringing a calmer hush and a more even, enveloping warmth to the rooms you live in most. The kraft facing adds a subtle layer of moisture control, perfect for creating a home that feels considered from the inside out. It’s the kind of foundational upgrade that elevates everyday living into something unmistakably refined.

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Upgrade your walls with JM R-13 kraft-faced fiberglass batts for easier installation and noticeably improved comfort and sound control.

Warranty

Installation