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R-13 EcoRoll Kraft Faced Fiberglass Insulation Roll 3-1/2 in. x 15 in. x 32 ft.

  • R-13 fiberglass insulation pre-cut for 2x4 walls, floors & attics
  • Provides temp. control and sound absorption in floors and walls
  • Natural color, eco-friendly (formaldehyde-free), recycled content
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Product Overview

Knauf R-13 EcoRoll Kraft faced fiberglass insulation with ECOSE Technology is a leading sustainable insulation. All of our rolls 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 rolls cut easily for faster installation and 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 roll, EcoRoll 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 2x4 stud walls along with floor and attic use.)
  • R-13 insulation is best used for application in 2x4 walls
  • Each R-13 fiberglass insulation roll is 3.5 in. D x 15 in. W x 32 ft. L
  • Each individual roll covers 40 sq. ft. of R-13 insulation
  • The R-13 R-value improves personal comfort in your home or office
  • R-13 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-13 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

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

Info & Guides

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Cover Area Per Bag (sq. ft.)
40 ft²
Coverage Area (sq. ft.)
40 ft²
Product Length (ft.)
32 ft
Product Thickness (in.)
3.5 in
Product Width (in.)
15 in


Bag Size
1.375 ft. x 16 in. x 16.5 in.
Batt/Roll Size
32 ft. x 3.5 in. x 15 in.
Compatible Install Surface
Cement,Concrete,Copper Pipes,Existing Drywall,Existing Insulation,Fiberglass,Metal,PVC/CPVC Pipes,Pex Pipes,Plywood,Tile Flooring,Wood
Faced or Unfaced
Insulation Features
Formaldehyde Free,Vapor Retardant
Insulation Location
2x4 Wall
Insulation R-Value
Insulation Type
Number of Pieces
Pack Size
Product Weight (lb.)
11.2 lb
Roll or Batt

Warranty / Certifications

Warranty Information
9 Year Limited Warranty

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
  • What are the dimensions of the product?

Customer Reviews

  • 4.6
    out of 337 reviews
  • 97% recommend this product
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Showing 1-10 of 337 reviews
Easy to use. Cutting it was simple and made installation a breeze.
Easy to use. Cutting it was simple and made installation a breeze.
Response from Tamy WoodwardDec 29, 2020
Thank you for purchasing Knauf Insulation. KnaufInsulation
  • Verified Purchase
  • Recommended
Great price! Enough to insulate small projects.
Great price! Enough to insulate small projects.
  • Verified Purchase
  • Recommended
1 person found this helpful
Easy to cut.
Easy to cut.
  • Verified Purchase
  • Recommended
Paper wasn’t lined up on one roll...
Paper wasn’t lined up on one roll
Response from Tamy WoodwardNov 17, 2021
We apologize for the issue you experienced. KnaufInsulation
    It is thinner and easier to handle than the straight...
    It is thinner and easier to handle than the straight fiberglass. I was very surprised. I am switching to it for good.
    Response from Tamy WoodwardNov 16, 2021
    Thank you for your review and welcome to the Knauf family of insulation products. KnaufInsulation
            Rating provided by a verified purchaser...
            Rating provided by a verified purchaser
            Response from Tamy WoodwardNov 5, 2021
            Thank you for your review of Knauf Insulation, we appreciate your purchase. KnaufInsulation
              Good quality, easy toinstall...
              Good quality, easy toinstall
              Response from Tamy WoodwardNov 5, 2021
              Thank you for your purchase of Knauf Insulation. We appreciate your review. KnaufInsulation
                Showing 1-10 of 337 reviews