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R-13 Kraft Faced Fiberglass Insulation Roll 15 in. x 32 ft.

  • Easy to cut, split and install
  • Greenguard GOLD certified & SCS Certified to be formaldehyde free
  • Offers exceptional thermal and sound control performance
  • See More Details

Product Overview

R-13 kraft faced fiber glass insulation is formaldehyde free insulation protected on one side with moisture resistant kraft facing. R-13 kraft faced rolls are perfect for insulating exterior 15 in., 2 in. x 4 in. walls where moisture control is required. One roll covers 40 sq. ft.
  • For use in 2 in. x 4 in. wood-framed walls
  • Rolls are designed for long, unobstructed spaces with 16 in. on-center stud spacing
  • Facing provides built-in vapor retarder for moisture control
  • Improves energy efficiency and provides sound control
  • JM is a partner of the seal and insulate with ENERGY STAR program


  • Test Item

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

Info & Guides

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Specifications

Dimensions

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

Details

Bag Size
1.42 ft. x 15.5 in. x 17.5 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
Coverage Area per Bag (sq. ft.)
40
Faced or Unfaced
Faced
Insulation Features
Formaldehyde Free,Friction Fit,Soundproofing Insulation,Vapor Retardant
Insulation Location
2x4 Wall
Insulation R-Value
R13
Insulation Type
Fiberglass Insulation
Number of Bags
1
Pieces Per Bag
1
Pieces per Pallet
27
Product Weight (lb.)
11.3
Roll or Batt
Roll

Warranty / Certifications

Warranty Information
N/A

Questions & Answers

22Questions17Answers

How do I install this- paper side in or facing out. It’s for a storage area adjacent to a bedroom...

Asked by Mary May 29, 2021
2
Answers

Hi Mary, if this is not a exterior wall, you can put the faced material any way, it will not make a difference. The faced material is a vapor retarder for moister control and you need to face it out on exterior walls. Ret

Can this be attached to 2 x 4 construction?

Asked by Lee May 2, 2021
1
Answer

Yes. This product can be used in 2x4 stud cavities.

I want to use this product to reduce the level of acoustic disturbance that my upstairs neighbor ...

Asked by Italnsd April 10, 2021
4
Answers

Thanks for all your replies. I knew that I could not hope to achieve soundproofing, my limited goal was simply to get some level of attenuation in the propagation of the sound from the back of the speaker (or better the top in this case) by trapping those pressure waves into the air "bubbles" present in the isolation material. I had read in one of the too many websites I checked out that in terms of acoustic isolation R13 works better than R30, which fills the space too much. Unfortunately, unless I embark in a major project of complete ceiling restructure, I am limited to using whatever type of "acoustically isolating" material can be squeezed into the cavity through the speakers' mounting holes. Not sure if those tiles Happyhomeowner is referring to are such. Would foam baffles as those shown in the picture, placed atop the speakers, with maybe a layer of the Johns Manville R-13 fiberglass in between produce any better results?

can this be used on 2x3 walls?

Asked by Tom February 15, 2021
1
Answer

Hello and thank you for your interest in Johns Manville Kraft Faced Fiberglass. This product is 3.5" thick which is slightly larger than the cavity space you will have in the 2"x3" walls. If the insulation is installed in this cavity you will have a reduction of R-value and no longer achieve R-13. The insulation is still effective when it is compressed, just not as much so as if it is allowed to expand to its full thickness. Ultimately, yes the product could be installed in 2"x3" walls, it will just not perform to its advertised R-value.

I live in southern california,can I use R13 for garage ceiling,plus there is no attic above garage ceiling and it is detached garage nothing above it

Asked by Gina February 10, 2021
2
Answers

Hi Gina, yes for your climate you can use this product. You need to measure the center to center of your joist to determine the product to purchase( 16 inch cc you need 15 inch product, 24 inch cc you need 23 inch product). I sent you two pictures to show you the different size in my workshop ceiling. Ret

will this product be good for sound in between bed rooms in a Mobile home?

Asked by James January 20, 2021
1
Answer

This product would help for acoustical performance in between bedrooms. However, the Kraft facing is not intended for interior walls. A better alternative would be an Unfaced Fiberglass.

What is the Florida Product Approval #?

Asked by Babi January 17, 2021
2
Answers

Hi Babi, according to Johns Manville you do not need a approval number for Florida. You can also contact the Florida Building Association for more information. Ret

I have never used this brand. I have always used the pink color. Does JM R13 itch irritate like t...

Asked by Kannman September 10, 2020
2
Answers

It didn't itch or irritate me....

How does someone determine what R value is needed for 2x4 new construction?

Asked by Fred August 26, 2020
1
Answer

Hi Fred, 2x4 walls can fir an R-13 or R-15 product. you would decide which one is best for your project by referencing the chart Energy star provides telling you the suggested R-value for the are you live in or by referencing local building codes.

Is this insulation alright to use in a van? Doe's it need to be fitted in tight not to create gap...

Asked by Van August 5, 2020
1
Answer

This product is rated to be used in buildings. Please check requirements for insulation used in vehicles. Thank you.

R-13 Kraft Faced Fiberglass Insulation Roll 15 in. x 32 ft. - page 2

Customer Reviews

  • 4.6
    out of 303 reviews
  • 94% recommend this product
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Showing 1-10 of 303 reviews
Easy to cut to length needed and install
Easy to cut to length needed and install
by Gardenmama5
Was easy to cut and install.
Was easy to cut and install.
by Remodel
1 person found this helpful
new wall
decent price but should be cheaper for a 10 pack price
by rowe
Good Insulation - Doesn't Seem as Fluffy As The Pink Stuff
Used this on an Outbuilding that needed insulation. It came tightly rolled & I unrolled then cut to length. I let them lay out on the stretch bench to fluff up. It cuts just like the "Pink" stuff & seems to go into the voids just the same. I did notice that it did not fluff up to the same height of the Pink Stuff. I got the roll to do a comparison between the 2 as I will be buying more that 40 or so rolls here in the near future. It installed & seems to fill the void. Until I have the 5/8 drywall in & hit it with a Thermal Camera I will not be sure.
by HomeDepotCustomer
1 person found this helpful
Degrees cooler
I used this R-13 Kraft Faced Fiberglass Insulation Roll 15 in. x 384 in in my storage barn. I intend to insulate the entire area, but this one roll has help to reduce the interior temperature already, It was easy to cut and staple into place.It is eco friendly and there is no itch as with other insulation's. As you can see from the attached photos this insulation makes the wall ready for the final 1/2" plywood wall covering.
by Dale
7 people found this helpful
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Showing 1-10 of 303 reviews