SKU: 4386744389

Johns Manville R-38 Kraft-Faced Fiberglass Batt Insulation, 48-sq ft Coverage (16-in W x 48-in L, 12-in Thick)

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Description

Johns Manville R-38 Kraft-Faced Fiberglass Batt Insulation, 48-sq ft Coverage (16-in W x 48-in L, 12-in Thick)R 38 Kraft faced fiberglass attic batt insulation High R 38 kraft faced fiberglass batts designed for attics, ceilings, and floors. Precut 16 in x 48 in pieces provide 48 sq ft coverage per pack and include an integrated vapor retarder for moisture control and improved energy efficiency. Key Features: Moisture Control: Kraft facing provides a built in vapor retarder to manage humidity in attics and ceilings. Energy & Sound Performance: R 38 thermal

R-38 Kraft-faced fiberglass attic batt insulation

High R-38 kraft-faced fiberglass batts designed for attics, ceilings, and floors. Precut 16 in x 48 in pieces provide 48 sq ft coverage per pack and include an integrated vapor retarder for moisture control and improved energy efficiency.

Key Features:

  • Moisture Control: Kraft facing provides a built-in vapor retarder to manage humidity in attics and ceilings.
  • Energy & Sound Performance: R-38 thermal rating enhances efficiency and helps reduce noise.
  • Precut Convenience: 16-in x 48-in batts fit standard 16-in on-center framing; simple press-in installation.
  • Durable Fiberglass: Will not rot, mildew, or corrode pipes, wiring, or metal studs; formaldehyde-free.
  • Certified Air Quality: GREENGUARD Gold and SCS Recycled Content certifications; ENERGY STAR program partner.

Specifications Table:

Specification Details
Coverage Area (Sq. Feet) 48
Length (Inches) 48
Width (Inches) 16
Thickness (Inches) 12
Faced/Unfaced Kraft faced
Insulation Type Fiberglass
Maximum R-Value 38
R-Value per Inch 3.1667
Stud Spacing (Inches) 16
For Use in Attics Yes
For Use in Ceilings Yes
For Use in Floors Yes
For Use in Basements No
For Use in Crawlspaces No
For Use in Walls No
Sound Barrier Yes
Vapor Retardant Yes
Formaldehyde Free Yes
ENERGY STAR Certified Yes
GREENGUARD Gold Certified Yes
Package Type Individual pack
Package Count 9
Total Package Quantity 9
Bag Dimensions (L x W x D) 16.5 x 20 x 49
Warranty 1-year limited
CA Residents: Prop 65 Warning(s) No
UNSPSC 11162400

Frequently Asked Questions (FAQ):

Q: How many pieces are in the package and what area will it cover?
A: There are 9 precut batts per pack, covering a total of 48 sq ft.

Q: What framing does it fit?
A: Designed for 16-in on-center wood studs/joists with each batt measuring 16 in W x 48 in L and 12 in thick.

Q: Where can I use it?
A: Ideal for attics and ceilings; also suitable for floors. Not intended for walls, basements, crawlspaces, or masonry.

Q: Is installation difficult?
A: Press batts into place between joists; staple the kraft tabs for added securement if required.

Q: Is it safe for indoor air quality?
A: Yes—formaldehyde-free fiberglass with GREENGUARD Gold certification and SCS certifications.

Wrap your home in quiet, cozy efficiency

These R-38 kraft-faced batts deliver a plush, architectural layer of performance—elevating an attic into a serene, climate-controlled envelope. The clean, uniform fibers and warm kraft facing create a tailored, professional finish. Pair them with crisp attic rulers and neat tab stapling for a refined install that looks as good as it performs. It’s a smart, luxurious upgrade that tempers seasons and softens sound with effortless poise.

Boost comfort and efficiency—add Johns Manville R-38 kraft-faced batts to your attic today.

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: 4386744389

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4.4 ★★★★★
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B
Brian Chrzastek
Alexandria, US
★★★★★ 5
Cornford's running commentary is arguably the best suited to fulfill this desire
Readers of any of Plato's works are bound to feel they might profit from various commentaries. His Timaeus, in particular, may be said to elicit such a hope because of number and intricacy of its details. Cornford's running commentary is arguably the best suited to fulfill this desire: it helps make clear the integrity of the dialogue as a whole and illumines the specific points along the way. Although this work is certainly dated, originally published in 1937, it is certainly one of the best full commentaries on the Timaeus.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 4, 2014
R
Roberto V. Novaes
Massapequa, US
★★★★★ 5
Plato's view of the creation of the world
Format: Paperback
A cosmology is a narrative concerning the creation of the universe. Many ancient philosophers have written or elaborated this kind of work. The Platonic dialogue Timeus is an account of the work of the creator god (called the demiurge - or artisan) sculpting the chaotic material world in accordance with the immaterial model of the Ideas. But the text was written in a very hermetic and symbolic language, making its interpretation difficult or even impossible without the knowledge of the references and symbols used by Plato. This book is a complete translation of the text followed by a comprehensive commentary explaining in detail every passage. Francis MacDonald Cornford is one of the most important ancient philosophy scholars, and this work reveals his deep knowledge of Platonic and Greek thought. It is a must have for anyone interested in greek and Platonic philosophy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 13, 2008
J
Verified Purchase
Jen G
Chelsea, US
★★★★★ 5
Joy restored!
Format: Paperback
Now, to be honest, I've been a John & Stasi Eldredge reader for a long time. I love their books and their writing styles. But more than their skills with language is their transparency and candor. If you get the chance to meet them, you'll see that who they are in person is just how they portray themselves in their books. They're honest. They're kind--both with themselves and with others and they're consistently dedicated to telling the truth--no hype. No bait and switch. Now, to Defiant Joy. This is a book for those who have lost joy. This is a book for those who have been blinded to the subtle creep of disappointment and cynicism that has tragically become the filter through which they see life. Let's be honest. Life can really suck sometimes. And it's both understandable and inevitable that joy is harder and harder to find...much less experience. Stasi has lived enough life to understand that condition. She shares her own struggles and disappointments--all of which give her credibility when she invites her readers to consider seeking joy in the midst of less than joyful circumstances. "Defiant Joy" is a fitting title for those who don't want to give up yet; who don't want to give in to resignation. And that's the invitation Stasi gently offers--there is another option beside resignation, cynicism, depression and disillusionment. Joy! Who would have thought? Stasi writes like she talks. Reading her work is like sitting down with a good friend for an honest and frank conversation about what really matters. She's the kind of friend we all long to have--one who tells us what we need to hear instead of what we want to hear; one who tells us the truth, even when we've lost hope of ever finding it. You won't find any relativism or warm-fuzzy self-talk. This is not a self-help book. Stasi has suffered too much to offer simplistic answers to some of the most difficult questions. I highly recommend this book. It's on my suggested reading list for the community I lead. Stasi is one battle-experienced traveler who's offering other weary travelers hope for the journey ahead. I'll bet money you'll discover joy again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 18, 2019
J
Verified Purchase
Janis F. Siler
Louisville, US
★★★★★ 5
You can experience joy!
Format: Paperback, Format: Paperback
What is joy? How does it compare to happiness? From where does joy come? How can we experience joy every day despite the pain and sorrow that we all experience? Stasi Eldredge writes honestly and poignantly from places of pain and sorrow in her own life - but doesn't leave us there. She leads us into hope, into beauty and into a new depth of life in God. She teaches us how to cultivate joy in really practical - and achievable - ways. I was especially struck by her walking through St. Patrick's Breastplate - an ancient prayer - and how I can turn from a place of failure and shame based on my performance to the King and His character and hide myself in Him. "I need mercy, and I know it. In that knowing comes a great gift. I turn my heart again to my kind and understanding God and confess to Him that I need mercy. His answer swamps my heart with a too-good-to-be-true reality that leads to a crumbling of hopelessness and shame. My self-loathing collapses into His love. My self-condemnation melts into His arms that welcome and soothe. I have blown it. The blowing now has become the wind of the Holy Spirit. Ruah is here. His breath shepherds my heart into my Father's, and there mercy triumphs over judgment." I encourage you to read this book. God will use it to restore your soul, to bring water to your dry and weary soul, and to help you find rest in His strong arms. You will not feel condemned, but encouraged. I found hope in its pages.
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Reviewed in the United States on October 17, 2018
A
Verified Purchase
Amazon Customer
Charlottesville, US
★★★★★ 5
Good
Format: Paperback
Good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2026

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