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Owens Corning R-21 Faced Fiberglass Insulation Batt 23 in. x 93 in.

Owens Corning R-21 Faced Fiberglass Insulation Batt 23 in. x 93 in.

4.6· 29 ratings

Best price now

$109.53at Go Build Supply & MoreObserved at 3:54 PM

Compared across 2 stores. Prices are checked against each store and labelled with when.

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Our take on the Owens Corning R-21 Faced Fiberglass Insulation Batt 23 in. x 93 in.

Owens Corning R-21 faced fiberglass batts are 5.5-inch-thick kraft-faced insulation for 2x6 wall cavities and other framing where R-21 is called for. Each batt measures 23 in. by 93 in., and the pack covers about 89 sq ft. The kraft facing acts as a vapor retarder, and the batts are GreenGuard Gold certified for indoor air quality. At $109.53 at Go Build Supply & More as of November 4, 2026, it sits at the low end of its recent price range.

Best for2x6 exterior wall cavitiesDIY basement and garage wallsNoise reduction between roomsBuyers who want a built-in vapor retarder
Pros
  • R-21 rating suits 2x6 framing without adding depth
  • Kraft facing doubles as a vapor retarder
  • Stiffer batts hold their shape in the cavity
  • Recovers its thickness without fluffing
  • GreenGuard Gold certified for indoor air quality
  • Covers about 89 sq ft per pack
Cons
  • Fiberglass needs gloves, glasses and a mask to install
  • Faced batts must be stapled with flanges tight to the studs
  • Cutting around outlets and wiring takes care
  • One pack covers a small wall area, so large jobs need many

Owens Corning R-21 Faced Fiberglass Insulation Batt 23 in. x 93 in. prices at every store

  • MyHackerTechNew

    In stock

    $528.00Observed at 3:54 PM
    Visit store
  • Go Build Supply & MoreNew

    Availability unknown

    $109.53Observed at 3:54 PM
    Visit store

Also available at

  • eBayCheck price at eBay
  • Ace HardwareCheck price at Ace Hardware
  • ArborCheck price at Arbor
  • Supply TieCheck price at Supply Tie
  • S.W. CollinsCheck price at S.W. Collins
  • ubereats.comCheck price at ubereats.com

Owens Corning R-21 Faced Fiberglass Insulation Batt 23 in. x 93 in. price history

Lowest price we've seen: $96.46 on Nov 4 at S.W. Collins. Tracked across 7 stores since Nov 4.

What reviewers say

Rated 4.6 out of 5 from 29 ratings. Buyers generally report the batts arrive at full thickness and fit standard 2x6 stud spacing well.

Pros
  • Holds its shape and thickness in the cavity
  • Facing staples cleanly to studs
  • Cuts easily with a utility knife
Cons
  • Some packs arrive compressed and need time to expand
  • Fiberglass itch is still a complaint

Specifications

Form
Batts
Product Type
Fiberglass Batts
Insulation Type
Thermal, Acoustic
Insulated Plasterboard
No
Sound Absorption
Absorbs noise
Moisture Resistance
Vapor barrier for moisture control
Material Type
Fiberglass
Facing
Kraft Faced
Material Composition
Advanced fiber technology
Vapor Retarder
Yes (kraft or foil vapor barrier)
Coverage Area
89.13 sq ft
Thickness
5.5 in
Batt Size
5.5 in. x 23 in. x 93
Length
93
Width
23 in
Recommended Usage
Residential (for a more comfortable home)
Installation Method
Batt Installation
Flexibility
Stiffer batts
Compressibility
Recovers without shaking or fluffing
Weight
52 LBR
Certifications
Green guard gold certified
Environmental Rating
Gold (Green guard gold certified)

Questions and answers

Is R-21 the right choice for a 2x6 wall?
Yes. R-21 batts are 5.5 inches thick, which fills a standard 2x6 cavity. For 2x4 walls, use R-13 or R-15 instead.
What does the kraft facing do?
It acts as a vapor retarder, slowing moisture movement into the wall. Install it on the warm-in-winter side, with flanges stapled to the stud faces.
How much wall does one pack cover?
About 89 sq ft, or roughly 23 square feet per batt. Measure your wall area and add 10 percent for cuts and waste.
Can I use it in ceilings or floors?
It works in any framed cavity that fits 5.5 inches, but check local code for whether a vapor retarder belongs on the warm side in ceilings.
Is this price a good one?
At $109.53 at Go Build Supply & More as of November 4, 2026, it is the lowest of the two new prices tracked. Compare per square foot against other R-21 packs before buying in bulk.
Where is the Owens Corning R-21 Faced Fiberglass Insulation Batt 23 in. x 93 in. cheapest?
At Go Build Supply & More, for $109.53, as of our latest check.
What do buyers say about the Owens Corning R-21 Faced Fiberglass Insulation Batt 23 in. x 93 in.?
Rated 4.6 out of 5 from 29 ratings.
Where can I buy the Owens Corning R-21 Faced Fiberglass Insulation Batt 23 in. x 93 in.?
8 stores we checked sell it, including Go Build Supply & More, MyHackerTech, eBay, Ace Hardware, Arbor.

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