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Ships within 48 hours · Estimated delivery Aug 30 - Sep 4
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Description
Johns Manville R-30 Attic Kraft-Faced Fiberglass Batt Insulation, 88-sq ft Coverage (24-in W x 48-in L), K1243R 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
R-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.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy