At a Glance

R-Value per Inch: 3.1

Stud Spacing: 24 (in)

Sound Barrier

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Owens Corning R- 38 Attic Unfaced Fiberglass Batt Insulation 64-sq ft ( 24-in W x 48-in L)

Name: Owens Corning R- 38 Attic Unfaced Fiberglass Batt Insulation 64-sq ft ( 24-in W x 48-in L)
Brand: Owens Corning
SKU: 1000515559
Rating: 4.8 (11 reviews)

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4.8

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Owens Corning PINK Next Gen Fiberglas insulation installs faster because it’s made like no other fiberglass insulation. PINK Next Gen fiberglass insulation batts recover instantly, cut and split cleanly, glide in easily and stay put in the cavity, helping deliver inspection-ready results faster. They feel soft as cotton and are shed-resistant for more comfort and less cleanup on every job. And their advanced fiber technology creates a tightly woven network of soft, fine fibers to form a super-resilient blanket of insulating micro-pockets that deliver exceptional performance.

R-38 unfaced insulation batt, easy attic and floor install
Advanced fiber technology recovers without shaking or fluffing
Creates less dust—less mess and faster clean up
Safe, proven ingredients
Cost-effective solution for a more comfortable home
Insulation offers sound proofing benefits by helping to reduce unwanted noise
GREENGUARD Gold certified—contributes to indoor air quality
For wood and metal framed wall, floor and ceiling assemblies
Can be left exposed; vapor retarder can be added to assembly when required

General
Total Package Quantity	1	Package Type	Individual pack
Package Count	8	Insulation Type	Fiberglass
Framing Type	Wood studs

Dimensions
Coverage Area (Sq. Feet)	64	R-Value per Inch	3.1
Length (Inches)	48	Width (Inches)	24
Bag Dimensions (L x W x D)	50 x 18.25 x 24.25	Maximum R-Value	38
Thickness (Inches)	12	Package Weight (lbs.)	64

Features
Stud Spacing (Inches)	24	Faced/Unfaced	Unfaced
Sound Barrier	Yes	Formaldehyde Free	Yes
Vapor Retardant	No

Certifications
CA Residents: Prop 65 Warning(s)	No	GREENGUARD Gold Certified	Yes
ENERGY STAR Certified	Yes

Warranty
Warranty	Limited lifetime

Compatibility
For Use in Crawlspaces	No	Fits 2 x 6 Walls	No
For Use in Ceilings	Yes	For Use in Masonry	No
For Use in Electrical	No	For Use in Plumbing	No
For Use in Duct	No	For Use in Walls	No
For Use in Doors	No	For Use in Vents	No
For Use in Floors	No	For Use in Windows	No
For Use in Garage Doors	No	For Use in Basements	No
Fits 2 x 4 Walls	No	For Use in Attics	Yes

Miscellaneous
UNSPSC	11162400

Check out the Best Selling Batt Insulation on Lowes.com

Review

4.8 out of 5

11 Reviews

3 Star

2 Star

1 Star

100% Recommend this product

Ratings may include incentivized customer reviews.

11 Customer Reviews

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Easy to order online and lockup at the store.

Would Recommend

Great product! Did the job!

ShmarcMarch 20, 2026
From R- 38 Attic Unfaced Fiberglass Batt Insulation 64-sq ft ( 24-in W x 48-in L) Verified Purchaser

Was this Review Helpful ?

It works

Would Recommend

As best I can tell it's two 6" thick pieces of insulation very loosely stuck or maybe very lightly glued together, which makes it problematic separating all the batts once you open the package without accidentally pulling individual batts in half. The batts are all offset from each other by maybe an inch, so if you look closely you can tell where one starts & the other stops, but usually I end up screwing it up. Otherwise it works for its intended purpose (finishing my basement and these are g...

MikeMay 14, 2021
From R- 38 Attic Unfaced Fiberglass Batt Insulation 51.33-sq ft ( 19.25-in W x 48-in L) Verified Purchaser

Was this Review Helpful ?

lowes always comes threw !

Would Recommend

lowes always comes threw....the help there always can find me what im looking for. The pro sales team is great, they know what to do, where to get it, and how to install it. They are a asset to the community, and are always willing to help out smaller stores and do what they can ....that says alot. ...thank you

terryApril 12, 2021
From R- 38 Attic Unfaced Fiberglass Batt Insulation 64-sq ft ( 24-in W x 48-in L) Verified PurchaserVerified Pro

Was this Review Helpful ?

Some batch inconsistencies. Expected facing paper.

Would Recommend

My own error that I was expecting paper on one side of this. Hubby and I quickly adjusted our game plan and installed strapping as we were installing to hold the batts in place. They do stay up between rafters fairly well on their own, however, and fluff up fine. There are parts of some of the bags that look like wet cotton candy. There are also two distinct layers for each piece, so it appears that OC may have taken r30 and just added a layer to it. Cuts easily. Compact packaging. Easily fit 6 ...

kb04090May 20, 2019
From R- 38 Attic Unfaced Fiberglass Batt Insulation 42.67-sq ft ( 16-in W x 48-in L) Verified PurchaserSweepstakes

Was this Review Helpful ?

Good product

Would Recommend

Delivered in a timely manner well packed no issues.

JimStoneMarch 11, 2019
From R- 38 Attic Unfaced Fiberglass Batt Insulation 64-sq ft ( 24-in W x 48-in L) Verified PurchaserSweepstakes

Was this Review Helpful ?

Insulation

Would Recommend

New roof extra insulation in the ceiling. Woods off gotta do it, can only be the right thing to do. It does a great job!!

TonyNovember 5, 2018
From R- 38 Attic Unfaced Fiberglass Batt Insulation 42.67-sq ft ( 16-in W x 48-in L) Verified PurchaserSweepstakes

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		Name	Current Item Owens CorningR- 38 Attic Unfaced Fiberglass Batt Insulation 64-sq ft ( 24-in W x 48-in L)
		Ratings	11
		Maximum R-Value	38
		Width (Inches)	24
		Thickness (Inches)	12
Owens CorningR- 49 Attic Faced Fiberglass Batt Insulation 32-sq ft ( 16-in W x 48-in L)	Owens CorningR- 38 Attic Faced Fiberglass Batt Insulation 64-sq ft ( 24-in W x 48-in L)	Owens CorningR- 38 Attic Unfaced Fiberglass Batt Insulation 64-sq ft ( 24-in W x 48-in L)	Owens CorningR- 30 Attic Unfaced Fiberglass Batt Insulation 80-sq ft ( 24-in W x 48-in L)	Owens CorningR- 38 Attic Unfaced Fiberglass Batt Insulation 42.67-sq ft ( 16-in W x 48-in L)	Owens CorningR- 30 Attic Unfaced Fiberglass Batt Insulation 79.17-sq ft ( 23.75-in W x 48-in L)	Owens CorningR- 30 Attic Unfaced Fiberglass Batt Insulation 80-sq ft ( 24-in W x 48-in L)	Owens CorningR- 49 Attic Unfaced Fiberglass Batt Insulation 48-sq ft ( 24-in W x 48-in L)	Owens CorningR- 38 Attic Faced Fiberglass Batt Insulation 64-sq ft ( 24-in W x 48-in L)
2	557	11	554		554	554	1	208
49	38	38	30	38	30	30	49	38
16	24	24	24	16	23.75	24	24	24
14	12	12.5	9.5	12.5	8.25	10	14	12.5