#1 Home Improvement Retailer

Internet #303654111

Model #5001491

Store SKU #1002992612

R-38 EcoBatt Kraft Faced Fiberglass Insulation Batt 12 in. x 24 in. x 48 in.

  • For ceilings and attics - easy to cut & install with low dust
  • Provides temp. control and sound absorption in floors & ceilings
  • Natural color, eco-friendly (formaldehyde-free), recycled content
  • See More Details

Frequently Bought Together


Product Overview

Knauf EcoBatt Kraft faced fiberglass insulation with ECOSE Technology is a leading sustainable insulation. All of our batts are bonded with the revolutionary, industry-transforming, plant-based ECOSE Technology. They are validated by UL Environment as formaldehyde-free, and they contain no Red List chemicals. Made with a high degree of recycled glass, our insulation batts are pre-cut to install quickly and easily with low dust and low hassle. Our kraft facing is durable, resists tears, and is marked in 1 ft. increments to streamline installation. And like every Knauf Insulation batt, EcoBatt is resilient and recovers quickly out of the package for a snug fit. Install Knauf Insulation in your home and stay comfortable year-round.
  • Softer to the touch, easy to cut, split and install
  • GREENGUARD Gold certified, free of red list chemicals and formaldehyde
  • Provides superior thermal and sound control performance
  • Application attic
  • Coverage area/compatibility feature and benefit: 12 in. D x 24 in. W x 48 in. L (64.00 sq. ft.)
  • R-value feature and benefit improves personal comfort in your home or office
  • Efficiency feature and benefit high-quality materials made of resilient fibers
  • Installation feature and benefit durable kraft facing is marked in 1 ft. increments for faster installation, a stapling flange makes installation easier, pre-cut for fast installation, cuts easily, installs fast and contains low dust
  • Material feature and benefit designed to last the life of the structure compression packaging fits more product in every bag
  • Noise reduction feature and benefit reduces sound transmission
  • Energy Star

  • Test Item

  • Click here to learn more about Eco Options and Energy Efficiency

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.



Coverage Area (sq. ft.)
Product Length (ft.)
4 ft
Product Thickness (in.)
12 in
Product Width (in.)
24 in


Bag Size
4.16666667 ft. x 25 in. x 16 in.
Batt/Roll Size
4 ft. x 12 in. x 24 in.
Compatible Install Surface
Cement,Concrete,Copper Pipes,Existing Drywall,Existing Insulation,Fiberglass,Metal,PVC/CPVC Pipes,Pex Pipes,Plywood,Tile Flooring,Wood
Coverage Area per Bag (sq. ft.)
Faced or Unfaced
Insulation Features
Formaldehyde Free,Vapor Retardant
Insulation Location
Insulation R-Value
Insulation Type
Fiberglass Insulation
Number of Bags
Pieces Per Bag
Pieces per Pallet
Product Weight (lb.)
Roll or Batt

Warranty / Certifications

Warranty Information
1 Year

Questions & Answers


It says the roll is 4 ft long but the coverage area is 64 soft, how long of a distance will one b...

Asked by Buck February 13, 2021

This product is individual batt pieces that are 2 feet wide by 4 feet long or 8 sq feet per batt piece. There are 8 pieces in a bag or 64 total square feet in a bag.

this has been the most confusing and time consuming website I've ever experienced. i have a bulk ...

Asked by steven August 6, 2020

How much does it weigh per bundle or a pack of 4 ?

Asked by Eric July 20, 2020

127 pounds is the weight for a package of 4.

Any California prop65 warning on this product?

Asked by AL June 30, 2020

No. Knauf Insulation EcoBatt Insulation products do not contain and are not manufactured with any of the chemicals or substances listed in the Safe Drinking Water and Toxic Enforcement Act of 1986 more commonly known as Proposition 65. Therefore, no special labeling is required for our EcoBatt Insulation products in all R-value and all faced or unfaced options.

Can I use this as a fire blocking material?

Asked by Joseca August 2, 2019

yes as long as you dont put near fireplace or gas vents

Is this soundprove

Asked by 777 July 22, 2019

yes but not best

Is there 8 individual pieces that measure 24"x48"?

Asked by Bob November 23, 2018


how many batts in r30 bag

Asked by colonial October 10, 2018

11 to 12

how many square feet per bag?

Asked by Rubin August 12, 2018

This item covers 64 square feet.

How many bats are included per container? I do not have a large area to do, but need to estimate ...

Asked by kthack July 2, 2018

The quantity of batting is 1.

R-38 EcoBatt Kraft Faced Fiberglass Insulation Batt 12 in. x 24 in. x 48 in. - page 2

Customer Reviews

  • 4.7
    out of 64 reviews
  • 100% recommend this product
Filter by:
Showing 1-10 of 64 reviews
Great product...
Great product
by HomeDepotCustomer
Response from Tamy WoodwardApr 26, 2021
We appreciate your review and thank you for purchasing Knauf Insulation. KnaufInsulation
So easy to install!
We are first time home owners, and one of our first big DIY projects was insulating the attic. The Knauf Insulation comes in 16”x48” batts, which made installation a breeze. We were able to insulate the whole attic in one afternoon. Our friends and family were so impressed!! We owe it all to this quality product! Highly recommend.
by JASchneider514
Response from Customer ServiceFeb 22, 2021
Congratulations on your first home! That is a great first project that can lower your energy costs and improve the comfort of the home. We are glad to hear that Knauf EcoBatt Insulation worked well in your attic and thank you so much for sharing. Excellent photo!
We order by the truckload
I’m an insulation contractor with a few crews and we install anywhere from 25-40 truckloads of Knauf insulation per year. For years it has been our preferred brand for a few reasons. It is a very consistent material throughout which makes it cut more cleanly and install more smoothly. Other brands we have tried have actually had chunks of unprocessed glass in them. Others fall apart as you try to handle the pieces. It is a smoother fiber which makes it less unpleasant to handle. Other brands feel rougher. We also love that it is greenguard certified as well as the high recycled content. Overall this all translates into a better installation experience, which enhances the job outcome and makes a Grade 1 install more consistently achievable, and that’s what is best for our customers’ comfort and energy performance. We are proud to install this material.
by Insulation Unlimited
Response from Customer ServiceJan 15, 2021
Thank you very much for your kind words and sharing this great photo of the installed insulation. It looks excellent! We are thrilled to hear that Knauf Insulation is your preferred brand for so many reasons. The best experience for our customers is our main goal. We look forward to providing you with top quality fiberglass insulation for years to come.
Works great, easy to install
Works great, easy to install
by Rob
Response from Tamy WoodwardMay 3, 2021
Thank you for purchasing Knauf Insulation. KnaufInsulation
by Jeff
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
Response from Tamy WoodwardMar 20, 2021
Thank you for purchasing Knauf Insulation. KnaufInsulation
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
Response from Tamy WoodwardMar 18, 2021
Thank you for your help purchase of Knauf Insulation. KnaufInsulation
Quality Product!
We have had very little issues with this product and our installers like it the best!
by Andrea
Response from Customer ServiceFeb 18, 2021
That is great to hear! Thank you for choosing Knauf Insulation.
great product
we go thru truckloads of this a month. Easy to work with, priced right, not itchy material, and made in the USA !
by BrianW
Response from Customer ServiceFeb 9, 2021
Thank you for the great review of EcoBatt Insulation. It is great to hear that you find it easy to work with and not itchy. We look forward to providing truckloads more for you in the future.
Excellent quality. Really fluffs up well....
Excellent quality. Really fluffs up well.
Response from Tamy WoodwardFeb 3, 2021
We appreciate your purchase of Knauf Insulation. KnaufInsulation
Showing 1-10 of 64 reviews