SKU: 88361268132

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

Sale price$100.76 Regular price$111.96
Save 10%

Pay in installments of $27.99 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 25 - Jul 30

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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:
  1. 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
SKU: 88361268132

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.6 ★★★★★
Based on 13 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
B
Verified Purchase
Bre B
West Palm Beach, US
★★★★★ 5
Warm and cozy for winter
Size: X-Small, Color: Black (002)/White
I. Love. These. Pants. I have them in three colors and I feel like I live in them during these midwest winters. They are cozy and comfy for around the house, but are totally cute enough to wear out and don't feel like typical sweat pants or pajamas like some joggers can. They are warm and snuggly inside, which I like, and have held up really well after several washes. I would say they run a little small, so consider sizing up unless you like a snugger fit. I am usually between an XS and Small and went with XS on my orders. They are slightly loose but not baggy. They also are not super long, mine hit me near the top of my ankle and I'm 5'4". It doesn't bother me, but I do find myself pulling them down at the ankle when I get out of the car or stand up from the couch, because they just seem a little high. For a comfy, warm, casual but stylish athletic type winter pant (exactly what I was after)... this is it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 23, 2022
C
Verified Purchase
Coastie V
Alexandria, US
★★★★★ 5
They fit perfect and are super comfy
Size: Large, Color: (001) Black / / White
Very soft and comfy! They are not the thickest to wear during a brutal winter, but they are warm. These are true to size (as recommended by my Amazon account). I loved these pants so much that I got me two more. They look great!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 15, 2026
K
Verified Purchase
Kim e.
Omaha, US
★★★★★ 5
High quality, good fit
Size: XX-Large, Color: (001) Black / / White
These fit perfectly, not super baggy and lose but definitely not tight. I have larger knees so sometimes tapered legs are too tight on my knees but these are perfect. Waistband is perfect. Thickness is not too hot or too cold. Soft and breathable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
A
Verified Purchase
Angela A.
New York, US
★★★★★ 5
UA finally got the Tall size right!
Size: Small Tall, Color: (001) Black / / White
I'm 5'7" and 130 pounds. This is second time I've bought joggers from UA, size Small Tall, and OMG I couldn't be happier! UA FINALLY(!) got the Tall size right with these...the first pair I ordered about two years ago were supposedly Tall but shrunk up as soon as I washed and dried them. I like them to hit my ankles and not everyone is 5'4". Flattering fit - these sit at my belly button (not too low not too high) and are fitted not bulky. Material is heavier weight, well made, deep pockets, and perfect for Fall & Winter. After washing and drying with no shrinkage, I ordered another pair while still on sale.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 11, 2026
M
Verified Purchase
madeleine
Belleville, US
★★★★★ 5
good quality
Size: X-Small, Color: Black (001)/White
keeps me warm during the cold months when i play golf. tight enough to move around in but not tight at all around the neck. overall a really great product. has kept up for the last 4 years very well
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026

recommand products