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home > Johns Manville R-30 Attic Kraft-Faced Fiberglass Batt Insulation, 88-sq ft Coverage (24-in W x 48-in L), K1243 > Johns Manville R-30 Attic Kraft-Faced Fiberglass Batt Insulation, 88-sq ft Coverage (24-in W x 48-in L), K1243

Johns Manville R-30 Attic Kraft-Faced Fiberglass Batt Insulation, 88-sq ft Coverage (24-in W x 48-in L), K1243 main image 0

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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

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R-30 Kraft-Faced Fiberglass Batt Attic Insulation, 88-sq ft

Name: Johns Manville R-30 Attic Kraft-Faced Fiberglass Batt Insulation, 88-sq ft Coverage (24-in W x 48-in L), K1243
Brand: www.midwoodautocraft.com
SKU: 2001662789
Price: 111.96 USD
Availability: InStock
Rating: 4.8298000000000005 (1030 reviews)

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.