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Johns Manville R-19 Unfaced Fiberglass Insulation Batt

Johns Manville R-19 Unfaced Fiberglass Insulation Batt

4.3· 22 ratings

Best price now

$39.98at Fleet FarmObserved at 2:12 PM

Compared across 3 stores. Prices are checked against each store and labelled with when.

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Our take on the Johns Manville R-19 Unfaced Fiberglass Insulation Batt

This is a single unfaced fiberglass batt, 15 inches wide by 93 inches long and 6.5 inches thick, rated R-19 for 2x6 wood-framed walls, floors, ceilings and basements. The fiberglass is formaldehyde-free and compression-packaged, and it also damps sound. At $39.98 at Fleet Farm as of November 4, 2026, it sits at the low end of its recent range across the four stores that carry it.

Best forFilling 2x6 exterior wall cavitiesBasement and ceiling runsDIY batt installationSound control between rooms
Pros
  • R-19 in a 6.5-inch batt suits standard 2x6 framing
  • Formaldehyde-free fiberglass
  • Unfaced design lets you add your own vapor retarder where code requires
  • Compression packaging makes it easier to carry and store
  • Covers about 87 square feet per batt
Cons
  • Sold as one batt, so a full wall needs several
  • Unfaced means no built-in vapor barrier
  • Fiberglass requires gloves, long sleeves and a mask
  • Compressed batts need time to fluff back to full thickness

Johns Manville R-19 Unfaced Fiberglass Insulation Batt prices at every store

  • Fleet FarmNew

    Availability unknown

    $39.98Observed at 2:12 PM
    Visit store
  • Home CentralNew

    Availability unknown

    $60.75Observed at 2:12 PM
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  • WalmartNew

    Out of stockSold by UnbeatableSale Local

    $97.27Observed at 2:12 PM
    Visit store

Also available at

  • eBayCheck price at eBay
  • Knudson Lumber CoCheck price at Knudson Lumber Co
  • ArborCheck price at Arbor
  • Supply OntimeCheck price at Supply Ontime

Johns Manville R-19 Unfaced Fiberglass Insulation Batt price history

Lowest price we've seen: $39.98 on Nov 4 at Fleet Farm. Tracked across 8 stores since Nov 4.

What reviewers say

Rated 4.3 out of 5 from 22 ratings. Buyers generally find it easy to cut and fit and report it does what R-19 batts should.

Pros
  • Fits 2x6 stud bays well
  • Cuts cleanly with a utility knife
  • Noticeable sound reduction
Cons
  • Batts arrive compressed and need to expand
  • Itching and dust during installation

Specifications

Form
Batt, Batts
Product Type
Fiberglass Batts
Insulation Type
Thermal, Acoustic
Insulated Plasterboard
No
R-Value
R19
Thermal Resistance
R19
Sound Absorption
Reduces sound transmission
Coverage Area
87.18-sq ft
R-Value Per Inch
2.9231
Thickness
6.5 in
Batt Size
15-in W x 93-in L
Length
93 in.
Width
15 in.
Moisture Resistance
Will not mildew
Mold Resistance
Will not mildew
Material Type
Fiberglass
Facing
Unfaced
Material Composition
Formaldehyde-free
Vapor Retarder
No
Application
Sound control
Recommended Usage
Residential
Suitable Surfaces
Walls, 2x6 wood-framed walls, Basements, Ceilings, Floors
Installation Method
Batt Installation
Compressibility
Compression-packaged

Questions and answers

Is $39.98 a good price for one R-19 batt?
It is the lowest of the four stores pricing it new as of November 4, 2026, and sits at the bottom of its recent range. Compare per square foot, since one batt covers about 87 square feet.
How many batts do I need for a wall?
Each batt is 15 inches wide and 93 inches long, so it fills one 2x6 stud bay about 7.75 feet tall. Measure your wall area and divide by roughly 87 square feet per batt.
Can I use this in a basement or on a ceiling?
Yes. Johns Manville lists walls, 2x6 wood-framed walls, basements, ceilings and floors as suitable surfaces. It is unfaced, so add a separate vapor retarder where your local code requires one.
Does it come with a vapor barrier?
No. This is an unfaced batt with no vapor retarder, which gives you flexibility to choose a membrane or faced product for the assembly.
Will it help with noise?
Yes. The fiberglass is rated for acoustic as well as thermal use and reduces sound transmission through the assembly.
When is it cheapest?
Insulation tends to dip in fall and winter, outside peak building season. Track the price history here and buy when it falls near the $39.98 low.
Where is the Johns Manville R-19 Unfaced Fiberglass Insulation Batt cheapest?
At Fleet Farm, for $39.98, as of our latest check.
What do buyers say about the Johns Manville R-19 Unfaced Fiberglass Insulation Batt?
Rated 4.3 out of 5 from 22 ratings.
Where can I buy the Johns Manville R-19 Unfaced Fiberglass Insulation Batt?
7 stores we checked sell it, including Fleet Farm, Home Central, Walmart, eBay, Knudson Lumber Co.

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