Johns Manville R-30 Kraft-Faced Fiberglass Batt Insulation, 58.66-sq ft Coverage (16-in W x 48-in L), K1242
Regular price $74.62R-30 Kraft-Faced Fiberglass Batt Insulation, 58.66-sq ft
Kraft-faced fiberglass batts designed for attics, ceilings, and floors with 16-in on-center joists. Provides R-30 thermal performance, integrated vapor retarder, and sound control with easy press-in installation.
Key Features:
- R-30 Thermal Performance: Maximizes energy efficiency with 10.25-in thick batts for 16-in OC framing
- Built-In Moisture Control: Kraft facing acts as a vapor retarder to help manage condensation
- Pre-Cut Convenience: 16-in x 48-in batts fit standard attic joists; 58.66-sq ft per bag
- Durable, Safe Material: Formaldehyde-free fiberglass that will not rot, mildew, or corrode
- Low Emissions Certified: GREENGUARD Gold and SCS Certified for indoor air quality
Specifications Table:
| Specification | Details |
|---|---|
| Insulation Type | Fiberglass |
| Faced/Unfaced | Kraft faced |
| Width (Inches) | 16 |
| Length (Inches) | 48 |
| Thickness (Inches) | 10.25 |
| Maximum R-Value | 30 |
| R-Value per Inch | 2.9268 |
| Coverage Area (Sq. Feet) | 58.66 |
| Stud Spacing (Inches) | 16 |
| Formaldehyde Free | Yes |
| Sound Barrier | Yes |
| Vapor Retardant | Yes |
| ENERGY STAR Certified | Yes |
| GREENGUARD Gold Certified | Yes |
| Package Type | Individual pack |
| Total Package Quantity | 11 |
| Package Count | 11 |
| Package Weight (lbs.) | 22.76 |
| Bag Dimensions (L x W x D) | 16.5 x 20 x 50 |
| 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 |
| CA Residents: Prop 65 Warning(s) | No |
| UNSPSC | 11162400 |
Frequently Asked Questions (FAQ):
Q: How many batts are in the package and what area will it cover?
A: There are 11 pre-cut batts per bag, covering a total of 58.66 square feet.
Q: Where can I use this insulation?
A: It’s intended for attics, ceilings, and floors with 16-in on-center wood studs; not for walls requiring 2x4 or 2x6 fits.
Q: Does the kraft facing need to be stapled?
A: Press batts in place between joists; staple the tabs to joists if additional securement is desired.
Q: Is this product formaldehyde-free?
A: Yes, the fiberglass is formaldehyde-free and GREENGUARD Gold certified.
Q: What is the thickness and R-value per inch?
A: Thickness is 10.25 inches with an approximate R-value per inch of 2.9268, delivering R-30 total.
Quiet, Cozy Attics with Effortless Precision
This kraft-faced batt brings a tailored, polished feel to your envelope—clean edges sliding perfectly into 16-inch cavities for a refined finish. I love the warm, natural kraft layer; it discreetly controls moisture while keeping the palette neutral and calm. Pair it with crisp attic decking and tidy access panels to elevate function and form. Consider this an essential foundation for serene, luxurious living—comfort you can’t see but always feel.
Upgrade your attic with R-30 performance and clean, easy installation—add Johns Manville Kraft-Faced Batts to your project today.
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