Johns Manville R-30 Attic Kraft-Faced Fiberglass Batt Insulation, 86.62-sq ft Coverage (23.625-in W x 48-in L)R 30 Kraft faced fiberglass attic batt insulation Formaldehyde free Johns Manville R 30 kraft faced fiberglass batts deliver high thermal performance for attics and cathedral ceilings. Precut to fit 24 in stud spacing, they add moisture control with a built in vapor retarder while helping reduce sound transmission. Key Features: High R Value Performance: R 30 thermal rating for improved energy efficiency in attics and ceilings Built In Moisture

R-30 Kraft-faced fiberglass attic batt insulation

Formaldehyde-free Johns Manville R-30 kraft-faced fiberglass batts deliver high thermal performance for attics and cathedral ceilings. Precut to fit 24-in stud spacing, they add moisture control with a built-in vapor retarder while helping reduce sound transmission.

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Key Features:

• High R-Value Performance: R-30 thermal rating for improved energy efficiency in attics and ceilings
• Built-In Moisture Control: Kraft facing provides an integrated vapor retarder
• Formaldehyde-Free Fiberglass: Health-conscious material with GREENGUARD Gold certification
• Easy Installation: Precut batts fit 24-in cavities; press in place and staple tabs if needed
• Durable & Noncorrosive: Will not rot or mildew; safe around pipes, wiring, and metal studs

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Specifications Table:

Specification	Details
Coverage Area (Sq. Feet)	86.62
Length (Inches)	48
Width (Inches)	23.625
Thickness (Inches)	10.25
Maximum R-Value	30
Stud Spacing (Inches)	24
Faced/Unfaced	Kraft faced
Insulation Type	Fiberglass
Formaldehyde Free	Yes
For Use in Attics	Yes
For Use in Ceilings	Yes
For Use in Walls	No
For Use in Floors	No
Sound Barrier	Yes
Vapor Retardant	Yes
Framing Type	Wood studs
Package Type	Multi-pack
Package Count	11
Total Package Quantity	11
Multi-Pack Quantity	4
R-Value per Inch	2.9268
ENERGY STAR Certified	Yes
GREENGUARD Gold Certified	Yes
Warranty	1-year limited
Bag Dimensions (L x W x D)	24.1 x 20 x 50
Package Weight (lbs.)	47.3
Fits 2 x 4 Walls	No
Fits 2 x 6 Walls	No
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 Windows	No
CA Residents: Prop 65 Warning(s)	No
UNSPSC	11162400

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Frequently Asked Questions (FAQ):

Q: Can these batts be used in cathedral ceilings?
A: Yes. They feature a thinner profile option designed for cathedral ceilings.

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Q: Do the batts include a vapor barrier?
A: Yes, the kraft facing acts as a built-in vapor retarder for moisture control.

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Q: What cavity spacing do they fit?
A: They are precut for 24-inch stud/joist spacing with each batt 23.625 inches wide.

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Q: Are they safe for indoor air quality?
A: Yes. They are formaldehyde-free and GREENGUARD Gold certified.

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Q: How much area does one package cover?
A: The package covers 86.62 square feet and includes 11 precut batts.

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Elevate Your Attic with Quiet, Cozy Performance

These R-30 batts wrap your home in a hushed, insulating layer, refining comfort while keeping lines clean and purposeful. The warm kraft facing adds a tailored look that feels considered in cathedral ceilings. Pair with crisp white rafters and minimal hardware for a streamlined install that complements modern and classic spaces alike. It’s a smart, luxurious foundation for energy-efficient living.

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Upgrade your attic with R-30 performance and built-in moisture control—choose Johns Manville batts today.