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R-30 Cathedral EcoBatt Kraft Faced Fiberglass Insulation Batt 15 in. W x 48 in. L (12-Bags)

  • For ceilings and attics - easy to cut & install with low dust
  • Provides temp. control and sound absorption in floors and walls
  • 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
  • Coverage area/compatibility feature and benefit: 8.25 in. D x 15 in. W x 48 in. L (55 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
  • Material feature and benefit designed to last the life of the structure
  • Noise reduction feature and benefit reduces sound transmission
  • Installation feature and benefit durable kraft facing is marked in 1 ft. increments for faster installation, a stapling flange makes installation easier, cuts easily, installs fast and contains low dust
  • Energy Star

Info & Guides

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Coverage Area (sq. ft.)
Product Length (ft.)
4 ft
Product Thickness (in.)
8.25 in
Product Width (in.)
15. in


Bag Size
4.16666667 ft. x 17 in. x 16 in.
Batt/Roll Size
4 ft. x 8.25 in. x 15. in.
Compatible Install Surface
Concrete,Existing Drywall,Metal,Plywood,Wood
Coverage Area per Bag (sq. ft.)
Faced or Unfaced
Insulation Features
Formaldehyde Free,Vapor Retardant
Insulation Location
Ceiling Insulation
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 Limited Warranty

Questions & Answers


Customer Reviews

  • 4.9
    out of 18 reviews
  • 100% recommend this product
Filter by:
Showing 1-10 of 18 reviews
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.
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.
Superb Product
This product installs great and performs even better than expected!
by Yoda21
Response from Customer ServiceFeb 1, 2021
That's great to hear! Thank you for taking a moment to write a review. We appreciate you choosing Knauf Insulation and look forward to providing you quality fiberglass batts for years to come.
Great product
My customers prefer this product over other brands
by Jonathan
Response from Customer ServiceFeb 1, 2021
We are very happy to hear that your customers prefer Knauf Insulation over other brands. We strive to manufacture the best fiberglass insulation on the market. Thank you for being our partner and sharing this great news.
ECOBATT-Great product
As a subcontractor I try to use all Knauf Batt Products. The packaging is great, the product always expands to the R-Value stated on the bag, not itchy at all, and overall just blends in and makes a house look like its ready to move into. Myself and my team prefer Knauf over all other manufacturers.
by Jim828
Response from Customer ServiceFeb 1, 2021
Thank you so much for sharing your experience as a subcontractor using Knauf Insulation. We are glad to hear that you are satisfied with the packaging and like that it's not itchy. Thank you for making us your preferred brand. We look forward to providing consistent quality to you for years to come.
Response from Customer ServiceFeb 2, 2021
Thank you for choosing EcoBatt Insulation by Knauf as your go-to batt insulation. We are glad to hear you are satisfied with the handling and performance of the material.
Great Material
We buy this material constantly and it's a pleasure to work with. It expands properly, and is always in good shape. Only issue is sometimes the sleeves will pop open unexpectedly on cooler days, but that's a minor issue. the product itself is wonderful.
by Nick
Response from Customer ServiceJan 12, 2021
Thank you for sharing your great experience with Knauf EcoBatt Insulation. We will share your comments about sleeves popping up on cooler days with the product engineers. Thank you again for choosing Knauf Insulation.
Great product
Great product, very user friendly. Almost no itch that is typical with the product. The only complaint is that it’s apparent that Knauf has taken on more business than they can handle.
by Ayres481
Response from Customer ServiceJan 12, 2021
We are glad you enjoy the limited itch since our product is completely formaldehyde-free. We appreciate your patience as we work together to leave COVID-19 behind us.
Showing 1-10 of 18 reviews