JM (Johns Manville) R-13 Kraft Faced Fiberglass Insulation Roll, 15 in. x 32 ft. (40 sq. ft.)R 13 Kraft Faced Fiberglass Insulation Roll JM Kraft faced Formaldehyde free fiberglass insulation roll provides R 13 thermal performance plus sound control for 2x4 wall cavities. The kraft facing acts as a built in vapor retarder to help manage moisture in concealed wall applications, and one roll covers 40 sq. ft. Key Features: Moisture Management Facing: Kraft facing provides a built in vapor retarder for moisture control in concealed wall

R-13 Kraft-Faced Fiberglass Insulation Roll

JM Kraft-faced Formaldehyde-free fiberglass insulation roll provides R-13 thermal performance plus sound control for 2x4 wall cavities. The kraft facing acts as a built-in vapor retarder to help manage moisture in concealed wall applications, and one roll covers 40 sq. ft.

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Key Features:

• Moisture Management Facing: Kraft facing provides a built-in vapor retarder for moisture control in concealed wall cavities.
• Comfort + Quieter Rooms: R-13 fiberglass helps reduce heat loss and absorbs sound for improved privacy and comfort.
• Sized for 2x4 Walls: Designed for 15 in. wide cavities (typical 16 in. on-center framing) in wood-framed walls.
• Formaldehyde-free Fiberglass: Formaldehyde-free insulation for residential and commercial projects.
• Cut-to-Fit Installation: Roll format can be cut to fit a range of cavity lengths for remodels and new construction.

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Specifications Table:

Specification	Details
Insulation R-Value	R13
Faced or Unfaced	Faced
Facing Type	Kraft faced
Insulation Material	Fiberglass
Roll or Batt	Roll
Insulation Type	Roll
Coverage Area (sq. ft.)	40 sq ft
Product Width (in.)	15 in
Product Length (ft.)	32 ft
Product Thickness (in.)	3.5 in
Fits Size	2 x 4 Wall
Insulation Location	Exterior Wall, Interior Wall
Insulation Features	Friction Fit, Soundproofing Insulation, Vapor Retardant
Compatible Install Surface	Concrete, Copper Pipes, Existing Drywall, Existing Insulation, Fiberglass, Metal, PVC/CPVC Pipes, Pex Pipes, Plywood, Tile Flooring, Wood
Pack Size	1
Bag Size	32 ft. x 15.5 in. x 15 in.
Batt/Roll Size	32 ft. x 15 in.
Product Weight (lb.)	9.6 lb
Warranty Information	N/A

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Frequently Asked Questions (FAQ):

Q: Where can I use this insulation?
A: It’s intended for 2x4 wall cavities and can be used in interior or exterior walls; it’s also commonly used in floors and ceilings where compatible with the application.

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Q: What does “kraft faced” mean?
A: Kraft faced means the fiberglass has a paper facing that functions as a vapor retarder to help control moisture in concealed applications.

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Q: How much area does one roll cover?
A: One roll covers 40 sq. ft.

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Q: What tools and safety gear should I use for installation?
A: Use a tape measure and utility knife for cutting, and wear long sleeves, gloves, and eye protection.

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Q: Is this a batt or a roll?
A: This product is a roll (kraft-faced fiberglass roll insulation).

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Quiet Luxury Starts Behind the Walls

True comfort is an invisible layer of intention, and this kraft-faced R-13 fiberglass roll brings that hush-and-warmth effect to the spaces you live in most. The clean, tailored roll format is made for long, uninterrupted cavities—so your walls feel more refined, less reactive, more serene. Use it to elevate bedrooms, nurseries, and office walls where sound control changes the mood instantly. It’s the kind of foundational upgrade that makes everyday living feel unmistakably luxe.

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Upgrade your 2x4 walls with JM R-13 kraft-faced fiberglass insulation for dependable comfort, sound control, and built-in moisture management.