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Internet # 313646745

Model # 691019

Store SKU # 1005488909

R-30 Cathedral EcoBatt Kraft Faced Fiberglass Insulation Batt High Density 8-1/4 in. x 15 in. W x 48 in. L (12-Bags)

Covers 660 sq.ft. ($2.71 /sq.ft.)
$1790.00 /pallet
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$undefined.00 /mo† suggested payments with months† financingApply Now
  • R-30 faced fiberglass insulation pre-cut for ceilings & attics
  • Provides temp. control, sound absorption and moisture mitigation
  • Natural colors, eco-friendly formaldehyde-free, recycled content
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Product Details

About This Product

Knauf R-30 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. (Recommended use includes vaulted ceilings and attic spaces.)


  • R-30 insulation is best used for application in attics & cathedral ceilings
  • Each R-30 fiberglass insulation batt is 8.25 in. D x 15 in. W x 48 in. L
  • Every order of 12 bags contains 660 sq. ft. coverage of R-30 insulation where each individual bag covers 55 sq. ft.
  • The R-30 R-value improves personal comfort in your home or office
  • R-30 insulation has high-quality materials made of resilient fibers for more energy efficiency and is Energy Star rated
  • Installation made fast and easy using pre-cut, softer to the touch insulation that has durable kraft facing marked in 1 ft. increments with stapling flange where cutting and splitting is simple with low dust
  • R-30 insulation compression packaging fits more product in every bag and is designed to last the life of the structure
  • Knauf fiberglass insulation provides superior thermal and sound control perfomance that improves comfort, privacy and productivity
  • Kraft vapor retarder helps prevent water vapor from condensing to liquid water within the cavity and has a vapor transmission (permeance) rating of 1.0 or less. Kraft facing will burn and should not be left exposed
  • Reduces heating and cooling bill by preventing outside air from entering and keeping controlled air inside
  • Fiberglass insulation minimizes insect intrusions by covering areas of entry
  • All Knauf fiberglass insulation is GREENGUARD Gold certified, free of red list chemicals and formaldehyde
  • Learn All About Insulation R-Values here.
  • Learn more about the various Types of Insulation here.
  • Return Policy

Product Information

Internet # 313646745

Model # 691019

Store SKU # 1005488909



Cover Area Per Bag (sq. ft.)

55 sq ft

Coverage Area (sq. ft.)

660 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

Faced or Unfaced


Insulation Features

Formaldehyde Free, Soundproofing Insulation, Vapor Retardant

Insulation Location

Attic, Ceiling Insulation, Interior Ceiling, Knee Wall

Insulation R-Value


Insulation Type


Number of Pieces


Pack Size


Product Weight (lb.)

30.734 lb



Roll or Batt


Warranty / Certifications

Warranty Information

1 Year Limited Warranty

Questions & Answers

Q:How many pieces are in each bag?
by|May 8, 2024
1 Answer
Answer This Question

A:  Hello Chris. Thank you for shopping the Home Depot. According to the Product description, there are 11 batts in each bag. Rick_HD_ OC

by|May 8, 2024
Q:Being this insulation is 8.25" in thickness. Will the r value change in an 8" space
by|Apr 14, 2024
1 Answer
Answer This Question

A:  When you compress insulation you do lose R value, in this case the R Value will be R29 instead of an R30.

by|Apr 15, 2024
    Q:If I use this in a cathedral ceiling with roof vent channel installed, and using pine tongue & groove attached directly to the underside of the rafters, do I need an additional vapor barrier over the insulation or does the faced paper suffice?
    by|Feb 12, 2024
    1 Answer
    Answer This Question

    A:  Kraft paper is a vapor retarder and you should not install two vapor retarders, as this could result in condensation.

    by|Feb 12, 2024
      Q:Can this product be used in an outside overhang ceiling?
      by|Nov 21, 2023
      1 Answer
      Answer This Question

      A:  Kraft paper may not be left exposed, you would need to cover the insulation with a drywall, wood or aluminum. Kraft paper is not fired rated so it may not be left exposed.

      by|Nov 21, 2023
        Showing 1-4 of 19

        Customer Reviews

        4.9 out of 5

        • 4.9 out of 56 reviews
        • 100% recommend this product
        Filter by:
        Showing 1-10 of 56 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.
        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!
          • Recommended
          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.
          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.
            • Recommended
            • Verified Purchase
            • Verified Purchase
            Insulation is fine however having to buy a whole pallet when I just needed 2 of the 8 bags was inconvenient. The length of time it took to ship in, delayed my project. All because it’s a special order product.
            • Verified Purchase
            this insulation is the first ive used, it was easy to install and cut to size as needed. it has kept the insulated areas warmer than before.
            Response from Tamy WoodwardDec 20, 2023
            Thank you for your review and we appreciate your purchase of Knauf Insulation. Happy Holidays! KnaufInsulation
            • Verified Purchase
            • Verified Purchase
            The product was as described and installed quite easily.
            Response from Tamy WoodwardOct 20, 2023
            Thank you for your purchase of Knauf Insulation and we appreciate your review. KnaufInsulation
            • Verified Purchase
            The 48-inch length made it much easier to install in our vaulted ceiling and there was a noticeable difference in the amount of sound coming in from outside compared to a less dense form of fiberglass insulation. This coming winter will be the test of the effectiveness of the R-30 rating.
            Response from Tamy WoodwardOct 11, 2023
            Thank you for your purchase of Knauf Insulation and we appreciate your review. KnaufInsulation
            • Verified Purchase
            • Verified Purchase
            Showing 1-10 of 56 reviews