Johns Manville R-30 Attic Kraft-Faced Fiberglass Batt Insulation, 88-sq ft Coverage (24-in W x 48-in L), K1243
Regular price $111.96R-30 Kraft-Faced Fiberglass Batt Attic Insulation, 88-sq ft
High-performance R-30 kraft-faced fiberglass batts designed for 24-in on-center attic framing. Provides thermal efficiency, moisture control with built-in vapor retarder, and sound reduction across 88 sq ft of coverage.
Key Features:
- Energy-Saving R-30 Performance: Improves thermal efficiency to help lower heating and cooling costs.
- Built-In Moisture Control: Kraft facing acts as a vapor retarder for attics, ceilings, and floors.
- Pre-Cut Convenience: 24-in x 48-in batts sized for 24-in on-center joist spacing; simple press-in installation.
- Durable, Healthy Choice: Formaldehyde-free fiberglass that won’t rot, mildew, or corrode pipes and wiring.
- Certified Indoor Air Quality: GREENGUARD Gold and SCS recycled content certifications; ENERGY STAR partner.
Specifications Table:
| Specification | Details |
|---|---|
| Insulation Type | Fiberglass |
| Faced/Unfaced | Kraft faced |
| Coverage Area (Sq. Feet) | 88 |
| Length (Inches) | 48 |
| Width (Inches) | 24 |
| Thickness (Inches) | 10.25 |
| Maximum R-Value | 30 |
| R-Value per Inch | 2.9268 |
| Stud Spacing (Inches) | 24 |
| Formaldehyde Free | Yes |
| Sound Barrier | Yes |
| Vapor Retardant | Yes |
| ENERGY STAR Certified | Yes (partner program) |
| GREENGUARD Gold Certified | Yes |
| Package Type | Individual pack |
| Total Package Quantity | 11 |
| Package Count | 11 |
| Bag Dimensions (L x W x D) | 24.5 x 20 x 50 |
| Package Weight (lbs.) | 34.14 |
| Warranty | 1-year limited |
| For Use in Ceilings | Yes |
| For Use in Attics | Yes |
| For Use in Floors | Yes |
| For Use in Basements | No |
| For Use in Crawlspaces | No |
| For Use in Doors | No |
| For Use in Duct | No |
| For Use in Electrical | 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 | No |
| For Use in Windows | No |
| Fits 2 x 4 Walls | No |
| Fits 2 x 6 Walls | No |
| UNSPSC | 11162400 |
Frequently Asked Questions (FAQ):
Q: How much area does one package cover?
A: This pack covers 88 sq ft with 11 pre-cut batts measuring 24 in x 48 in.
Q: Where can I install these batts?
A: Designed for attics and ceilings with 24-in stud spacing; also suitable for floors. Not for walls or basements per specs.
Q: Do I need a separate vapor barrier?
A: No—the kraft facing provides a built-in vapor retarder. Staple the tabs to joists if additional securement is needed.
Q: Are these batts safe for indoor air quality?
A: Yes, they are formaldehyde-free and GREENGUARD Gold certified.
Q: What tools are recommended for installation?
A: Utility knife, gloves and eyewear, long-sleeved clothing, caulk or spray foam, and an attic ruler.
Quiet, Cozy Attics with Effortless Precision
These R-30 kraft-faced batts wrap your attic in a cocoon of comfort, dialing down drafts and hush while elevating energy performance. The tailored 24-by-48-inch cuts slide neatly between joists, creating clean lines and a polished finish. Pair with bright attic lighting and painted storage to transform the space into a serene, functional retreat. It’s a refined upgrade that feels luxurious in everyday living.
Upgrade your attic’s efficiency and comfort today with JM’s easy-install R-30 kraft-faced batts.
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