Johns Manville R-15 Kraft-Faced Fiberglass Batt Insulation, 103.97-sq ft Coverage (23 in W x 93 in L) – K1232S
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:
| Specification | Details |
|---|---|
| Coverage Area | 103.97 sq ft |
| Length | 93 in |
| Width | 23 in |
| Thickness | 3.5 in |
| Faced/Unfaced | Kraft faced |
| Fits 2 x 4 Walls | Yes |
| Fits 2 x 6 Walls | No |
| For Use in Attics | No |
| For Use in Basements | Yes |
| For Use in Ceilings | No |
| For Use in Crawlspaces | No |
| For Use in Doors | No |
| For Use in Duct | No |
| For Use in Electrical | No |
| For Use in Floors | No |
| For Use in Garage Doors | No |
| For Use in Masonry | No |
| For Use in Plumbing | No |
| For Use in Vents | No |
| For Use in Walls | Yes |
| For Use in Windows | No |
| Framing Type | Wood studs |
| Insulation Type | Fiberglass |
| Maximum R-Value | 15 |
| R-Value per Inch | 4.2857 |
| Sound Barrier | Yes |
| Stud Spacing | 24 in |
| ENERGY STAR Certified | Yes (program partner) |
| GREENGUARD Gold Certified | Yes |
| Formaldehyde Free | Yes |
| Vapor Retardant | Yes |
| Package Type | Multi-pack |
| Package Count | 7 pieces |
| Multi-Pack Quantity | 4 |
| Total Package Quantity | 28 |
| Package Weight | 49.7 lb |
| Bag Dimensions (L x W x D) | 23.5 x 20 x 49 in |
| Warranty | 1-year limited |
| UNSPSC | 11162400 |
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.
Original: $125.09
-70%$125.09
$37.53Product Information
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Description
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:
| Specification | Details |
|---|---|
| Coverage Area | 103.97 sq ft |
| Length | 93 in |
| Width | 23 in |
| Thickness | 3.5 in |
| Faced/Unfaced | Kraft faced |
| Fits 2 x 4 Walls | Yes |
| Fits 2 x 6 Walls | No |
| For Use in Attics | No |
| For Use in Basements | Yes |
| For Use in Ceilings | No |
| For Use in Crawlspaces | No |
| For Use in Doors | No |
| For Use in Duct | No |
| For Use in Electrical | No |
| For Use in Floors | No |
| For Use in Garage Doors | No |
| For Use in Masonry | No |
| For Use in Plumbing | No |
| For Use in Vents | No |
| For Use in Walls | Yes |
| For Use in Windows | No |
| Framing Type | Wood studs |
| Insulation Type | Fiberglass |
| Maximum R-Value | 15 |
| R-Value per Inch | 4.2857 |
| Sound Barrier | Yes |
| Stud Spacing | 24 in |
| ENERGY STAR Certified | Yes (program partner) |
| GREENGUARD Gold Certified | Yes |
| Formaldehyde Free | Yes |
| Vapor Retardant | Yes |
| Package Type | Multi-pack |
| Package Count | 7 pieces |
| Multi-Pack Quantity | 4 |
| Total Package Quantity | 28 |
| Package Weight | 49.7 lb |
| Bag Dimensions (L x W x D) | 23.5 x 20 x 49 in |
| Warranty | 1-year limited |
| UNSPSC | 11162400 |
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.
