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Deal.ai › Owens Corning › Glass Wool Insulation
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Owens Corning R-30 Kraft Faced Fiberglass Insulation Batt

Owens Corning R-30 Kraft Faced Fiberglass Insulation Batt

4.7(179 ratings)

Best price now

$74.99at James Trading CompanyObserved at 1:43 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-30 Kraft Faced Fiberglass Insulation Batt

Owens Corning R-30 Kraft Faced Fiberglass Insulation is a blanket-style batt for attics, walls and ceilings, with a kraft paper facing that acts as a vapor retarder. R-30 suits 2x10 framing and is a common choice for attic floors and cathedral ceilings. It is GREENGUARD certified for low emissions. The best new price is $74.99 at James Trading Company as of November 7, 2026, with two stores listing it new.

Best forAttic floor and ceiling insulation2x10 framed walls and raftersDIY retrofits with standard framingOwners who want a built-in vapor retarder
Pros
  • Kraft facing serves as a vapor retarder, so no separate membrane is needed in many assemblies
  • R-30 fits 2x10 framing without compressing the batt
  • GREENGUARD certified for low indoor emissions
  • Standard batt size cuts and friction-fits easily between joists
  • Widely stocked, so partial jobs can be topped up later
Cons
  • Fiberglass requires gloves, long sleeves and a mask to install
  • Kraft facing must face the warm side; wrong orientation traps moisture
  • Batts must fill the cavity fully or R-value drops
  • Bulky to carry and store; a full attic run means many bundles

Owens Corning R-30 Kraft Faced Fiberglass Insulation Batt prices at every store

  • James Trading CompanyNew

    In stock

    $74.99Observed at 1:43 PM
    Visit James Trading Company
  • Lowe'sNew

    In stock

    $93.37Free shippingObserved at 1:45 PM
    Visit Lowe's

Also available at

  • Ace HardwareCheck price at Ace Hardware
  • Years Building MaterialsCheck price at Years Building Materials

Store links may earn us a commission. Some prices via Klarna.

Owens Corning R-30 Kraft Faced Fiberglass Insulation Batt price history

Lowest price we've seen: $52.00 on Nov 7 at Years Building Materials. Tracked across 4 stores since Nov 7.

What reviewers say

  • 4.7 / 5179 ratings

Buyers rate it 4.7 out of 5 across 179 ratings. Owners report it installs cleanly in standard framing and holds its shape, with complaints mostly about itch and handling.

What people mention
  • FitPraisedOwners say the batts friction-fit standard 2x10 joist spacing with little trimming.
  • HandlingCriticisedReviewers complain of itching and dust, and say gloves, sleeves and a mask are a must.
  • Vapor retarderPraisedThe kraft facing staples up as a vapor retarder, saving a separate membrane in many installs.
  • R-valuePraisedOwners report the batts hold their rated R-30 when installed without compression.

Specifications

Thermal Type
Blanket
GREENGUARD Certified
Yes
Type
Thermal Type

Questions and answers

What does R-30 mean and where does it fit?
R-30 is the thermal resistance rating. It is sized for 2x10 framing, typical of attic floors and some cathedral ceilings.
Which way should the kraft facing point?
The facing goes toward the warm, conditioned side of the assembly. In cold climates that means toward the living space; in hot climates check local guidance.
Do I need a separate vapor barrier?
Often no. The kraft facing acts as a vapor retarder when installed correctly, but check your local code for the assembly.
How much do I need for my attic?
Measure the square footage of the area to cover and divide by the batt coverage per bundle. Buy one extra bundle for cuts and mistakes.
Is it safe to install myself?
Yes with basic protection: gloves, long sleeves, eye protection and a respirator. Fiberglass irritates skin and airways, so avoid loose fibers in living areas.
When is it cheapest?
Insulation prices move with seasonal demand, often dipping outside peak fall and winter prep. Track the price history before a large order.
Where is the Owens Corning R-30 Kraft Faced Fiberglass Insulation Batt cheapest?
At James Trading Company, for $74.99, as of our latest check.
What do buyers say about the Owens Corning R-30 Kraft Faced Fiberglass Insulation Batt?
Rated 4.7 out of 5 from 179 ratings.
Where can I buy the Owens Corning R-30 Kraft Faced Fiberglass Insulation Batt?
4 stores we checked sell it, including Lowe's, James Trading Company, Ace Hardware, Years Building Materials.

Stores we've priced the Owens Corning R-30 Kraft Faced Fiberglass Insulation Batt at

  • Ace Hardware deals and prices
  • Lowe's deals and prices

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