JM R-13 Kraft-Faced Fiberglass Batt Insulation, 15 in. x 93 in., 106.56 sq. ft. (K1241)R 13 Kraft Faced Fiberglass Batt Insulation (15 in. x 93 in.) JM R 13 Kraft faced fiberglass batts provide long lasting thermal and acoustical performance for 2x4 wall cavities. The moisture resistant kraft facing acts as a built in vapor retarder to help with moisture control in concealed wall applications. Key Features: Built In Vapor Retarder: Kraft facing helps control moisture in exterior wall cavities. Comfort & Quiet: R 13 fiberglass batts

R-13 Kraft-Faced Fiberglass Batt Insulation (15 in. x 93 in.)

JM R-13 Kraft-faced fiberglass batts provide long-lasting thermal and acoustical performance for 2x4 wall cavities. The moisture-resistant kraft facing acts as a built-in vapor retarder to help with moisture control in concealed wall applications.

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Key Features:

• Built-In Vapor Retarder: Kraft facing helps control moisture in exterior wall cavities.
• Comfort & Quiet: R-13 fiberglass batts improve temperature stability while helping reduce sound transfer.
• Sized for 2x4 Walls: Pre-cut batts fit 15 in. wide, standard 8 ft. wall cavities.
• Easy Friction-Fit Install: Designed to stay in place without slumping, settling, or breaking down in normal applications.
• Formaldehyde-Free Technology: Uses JM Formaldehyde-free™ fiberglass insulation for a more comfortable indoor environment.

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Specifications Table:

Specification	Details
Brand	JM
Product Type	Fiberglass batt insulation
Insulation R-Value	R-13
Facing	Kraft faced (faced)
Material	Fiberglass (bonded glass fibers)
Batt Width	15 in.
Batt Length	93 in. (7.75 ft.)
Product Thickness	3.5 in.
Coverage Area	106.56 sq. ft.
Fits Size	2 x 4 Wall
Roll or Batt	Batt
Insulation Features	Friction fit; vapor retardant; sound control
Insulation Location	Exterior wall; interior wall
Model Number	K1241
UPC	031979109500
GTIN-13	0031979109500
Bag Size	4.08 ft. x 16.5 in. x 15 in.
Pack Size	1
Product Weight	26.2 lb
Formaldehyde-Free	Yes (Formaldehyde-free™)

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Frequently Asked Questions (FAQ):

Q: Where can I use this R-13 batt insulation?
A: It’s intended for 2x4 wood-framed wall cavities and is commonly used in interior/exterior walls; it can also be used in floors, ceilings, basements, attics, and crawl spaces where batt insulation is appropriate.

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Q: What does “kraft-faced” mean?
A: Kraft-faced batts have a paper facing that provides a built-in vapor retarder to help with moisture control in concealed applications.

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Q: What are the batt dimensions and coverage per bag?
A: Each batt is 15 in. wide x 93 in. long (7.75 ft) and one bag covers 106.56 sq. ft.

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Q: Do these batts need adhesive to install?
A: No—these are designed for friction-fit installation in the cavity; trim with a utility knife as needed for obstructions.

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Q: What thickness is this insulation for 2x4 walls?
A: The product thickness is 3.5 inches, matching typical 2x4 wall cavity depth.

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Quiet Luxury Starts Behind the Walls

Think of insulation as the unseen tailoring of a home—refined, intentional, and transformative. These kraft-faced R-13 fiberglass batts wrap 2x4 walls in a layer of comfort, softening temperature swings while dialing down everyday noise. The moisture-controlling facing adds a smart, architectural confidence that supports the longevity of your finishes. It’s the kind of behind-the-scenes upgrade that makes a space feel effortlessly elevated—because true luxury is comfort you can’t see, but immediately feel.

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Upgrade your walls with JM R-13 kraft-faced batts for easier installation, better comfort, and built-in moisture control.