Name: Owens Corning R- 30 Attic Unfaced Fiberglass Roll Insulation 31.25-sq ft ( 15-in W x 25-ft L ) Individual pack
Brand: Owens Corning
SKU: 1000373567
Rating: 4.7 (2970 reviews)

Here are some similar items...

Owens CorningR- 13 Kraft faced Fiberglass Roll Insulation 40-sq ft ( 15-in W x 32-ft L ) Individual pack

3374

Owens CorningR- 19 Unfaced Fiberglass Roll Insulation 75.07-sq ft ( 23-in W x 39.2-ft L ) Individual pack

677

Owens CorningR- 19 Kraft faced Fiberglass Roll Insulation 48.96-sq ft ( 15-in W x 39.2-ft L ) Individual pack

2959

Owens CorningR- 30 Attic Unfaced Fiberglass Roll Insulation 47.92-sq ft ( 23-in W x 25-ft L ) Individual pack

Owens CorningR- 6.7 Attic Unfaced Fiberglass Roll Insulation 5.6-sq ft ( 16.0-in W x 4.0-ft L ) Individual pack

261

Johns ManvilleR- 13 Wall Kraft faced Fiberglass Roll Insulation 40-sq ft ( 15-in W x 32-ft L ) Individual pack

1485

Owens CorningR- 15 Kraft faced Fiberglass Roll Insulation 30-sq ft ( 15-in W x 24-ft L ) Individual pack

3071

Owens CorningR- 19 Unfaced Fiberglass Roll Insulation 75.07-sq ft ( 23-in W x 39.2-ft L ) Individual pack

677

Owens CorningR- 19 Single faced Fiberglass Roll Insulation 48.96-sq ft ( 15-in W x 39.2-ft L ) Individual pack

677

Owens CorningR- 19 Unfaced Fiberglass Roll Insulation 48.96-sq ft ( 15-in W x 39.2-ft L ) Individual pack

2959

Owens CorningR- 19 Kraft faced Fiberglass Roll Insulation 75.07-sq ft ( 23-in W x 39.2-ft L ) Individual pack

ReflectixR- 21 Attic Wall Unfaced Reflective Roll Insulation 133.3-sq ft ( 16-in W x 100-ft L ) Individual pack

Johns ManvilleR- 19 Wall Kraft faced Fiberglass Roll Insulation 48.96-sq ft ( 15-in W x 39.167-ft L ) Individual pack

1484

Johns ManvilleR- 19 Wall Kraft faced Fiberglass Roll Insulation 75.07-sq ft ( 23-in W x 39.17-ft L ) Individual pack

1484

Johns ManvilleR- 30.0 Attic Unfaced Fiberglass Roll Insulation 31.25-sq ft ( 15.0-in W x 25.0-ft L ) Individual pack

487

This Item Is Featured In

Owens Corning Attic Insulation

Owens Corning (8-Pack) R- 30 Attic Unfaced Fiberglass Roll Insulation 31.25-sq ft ( 15-in W x 25-ft L ) Individual pack

Best Price. Guaranteed

Find a lower price on an exact item? We'll match it. Some exclusions apply.

Price Guarantee

FREE Returns

Return it in store or ship it back for free. Eligibility rules apply.

Return Policy

FREE Shipping

Delivery is on us for orders over $45. Some exclusions apply.

Shipping Details

Owens Corning PINK Next Gen Fiberglas insulation installs faster because it’s made like no other fiberglass insulation. PINK Next Gen fiberglass insulation rolls 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-30 unfaced insulation roll, 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	1	Insulation Type	Fiberglass
Framing Type	Wood studs

Dimensions
Coverage Area (Sq. Feet)	31.25	R-Value per Inch	3.3
Length (Feet)	25	Width (Inches)	15
Bag Dimensions (L x W x D)	23.4 x 23.4 x 17	Maximum R-Value	30
Thickness (Inches)	9	Package Weight (lbs.)	16.97

Features
Reflective	No	Vapor Retardant	No
Stud Spacing (Inches)	16	Faced/Unfaced	Unfaced
Sound Barrier	Yes	Formaldehyde Free	Yes

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	Yes	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	30141500

Check out the Best Selling Roll Insulation on Lowes.com

Review

4.7 out of 5

2970 Reviews

96% Recommend this product

Ratings may include incentivized customer reviews.

Read All Reviews

+ 81

What Customers Are Saying

Customers overwhelmingly praise the insulation for exceptional thermal performance, keeping homes warm in winter and cool in summer with noticeable immediate comfort improvements. Installation is consistently described as effortless—easy to unroll, cut, and fit without special tools. Reviewers highlight high-quality construction, trusted brand reputation, and durability, with many noting the modern formulation is far less itchy than older versions. A very small number mention minor inconsistencies like uneven thickness or slight odors, but these concerns are vastly outweighed by strong satisfaction with performance and value.

Customer review summary generated by AI, including incentivized reviews.

2970 Customer Reviews

Sort By

Serviceable

Was very pleased to find this knife when I purchased insulation. It did a fair but not good job of cutting the insulation.

TP83August 14, 2026
From R- 15 Kraft faced Fiberglass Roll Insulation 30-sq ft ( 15-in W x 24-ft L ) Individual pack Verified Purchaser

Was this Review Helpful ?

As expected

Would Recommend

It's insulation. It's exactly as you'd expect. This is unfaced. We bought it for insulating around ductwork.

LizzieAugust 8, 2026
Verified Purchaser

Was this Review Helpful ?

Thank Chevy for such good customer service.

Would Recommend

Chevy was kind and sweet and got both of my orders.

BeverlyAugust 4, 2026
From R- 13 Kraft faced Fiberglass Roll Insulation 40-sq ft ( 15-in W x 32-ft L ) Individual pack

Was this Review Helpful ?

Insulation

Would Recommend

Easy to cut and install

TravisAugust 1, 2026
From R- 19 Kraft faced Fiberglass Roll Insulation 48.96-sq ft ( 15-in W x 39.2-ft L ) Individual pack

Was this Review Helpful ?

164 Questions

Read All Q&A

Sort By

Owens Corning: Featured Videos

COMPARE PRODUCTS

		Name	Current Item Owens CorningR- 30 Attic Unfaced Fiberglass Roll Insulation 31.25-sq ft ( 15-in W x 25-ft L ) Individual pack
		Ratings	2966
		Width (Inches)	15
		Thickness (Inches)	9
		For Use in Attics
Owens CorningR- 30 Attic Unfaced Fiberglass Roll Insulation 47.92-sq ft ( 23-in W x 25-ft L ) Individual pack	Owens CorningR- 19 Kraft faced Fiberglass Roll Insulation 75.07-sq ft ( 23-in W x 39.2-ft L ) Individual pack	Johns ManvilleR- 30.0 Attic Unfaced Fiberglass Roll Insulation 31.25-sq ft ( 15.0-in W x 25.0-ft L ) Individual pack	ReflectixR- 21 Attic Wall Unfaced Reflective Roll Insulation 100-sq ft ( 48-in W x 25-ft L ) Individual pack	Owens CorningR- 19 Single faced Fiberglass Roll Insulation 48.96-sq ft ( 15-in W x 39.2-ft L ) Individual pack	Owens CorningR- 19 Unfaced Fiberglass Roll Insulation 75.07-sq ft ( 23-in W x 39.2-ft L ) Individual pack	ReflectixR- 21 Attic Wall Unfaced Reflective Roll Insulation 133.3-sq ft ( 16-in W x 100-ft L ) Individual pack	Johns ManvilleR- 19 Wall Kraft faced Fiberglass Roll Insulation 48.96-sq ft ( 15-in W x 39.167-ft L ) Individual pack	ReflectixR- 21 Attic Wall Unfaced Reflective Roll Insulation 200-sq ft ( 24-in W x 100-ft L ) Individual pack
5	26	487	421	677	677	50	1484	55
23	23	15	48	15	23	16	15	24
9	6.5	10.25	0.3125	6.5	6.5	0.3125	6.5	0.3125