R-15 Kraft-Faced Fiberglass Wall Batt Insulation

Kraft-faced fiberglass batts from Johns Manville deliver R-15 thermal performance and sound control for 2x4 wood-stud walls. Precut to 23 in x 93 in, this formaldehyde-free insulation includes a kraft vapor retarder and covers 103.97 sq ft per package.

Key Features:

• Moisture Control: Kraft-facing provides an integrated vapor retarder to help manage moisture in exterior walls and basements.
• Thermal + Acoustic Performance: R-15 value improves energy efficiency while reducing sound transmission.
• Precut Convenience: Sized for 8-ft walls with 24-in on-center studs; 23 in W x 93 in L batts.
• Durable, Noncorrosive: Will not rot or mildew and is noncorrosive to pipes, wiring, and metal studs.
• Health & Safety Certifications: Formaldehyde-free, GREENGUARD Gold certified; contributes to better indoor air quality.

Specifications Table:

Frequently Asked Questions (FAQ):

Q: How many pieces are in the package and what area will it cover?
A: There are 7 precut batts per package, covering a total of 103.97 square feet.

Q: What wall framing is this intended for?
A: It’s designed for 2x4 wood-stud walls with 24-in on-center stud spacing in standard 8-ft wall heights.

Q: Can this be used in basements or ceilings?
A: It’s suitable for basements and walls; it’s not intended for attics or ceilings per manufacturer specs.

Q: Is the product formaldehyde-free and certified for indoor air quality?
A: Yes. It is formaldehyde-free and GREENGUARD Gold certified.

Q: Do I need additional vapor barrier?
A: No additional barrier is typically required, as the kraft facing serves as a vapor retarder; follow local code and climate best practices.

Warmth, Quiet, and Clean Lines for Every Stud Bay

These kraft-faced batts slip into 2x4 cavities like they were tailor-made, creating a refined, quiet envelope around your rooms. The smooth kraft facing offers a tidy, professional look during build-out while the dense fibers deliver R-15 comfort. Pair with crisp drywall and painted millwork to let the serenity shine. It’s an essential layer for a home that feels luxuriously calm and energy-smart.

Upgrade your 2x4 walls with JM R-15 batts today for easier installs, quieter rooms, and year-round efficiency.