Prices, Promotions, styles, and availability may vary. Our local stores do not honor online pricing. Prices and availability of products and services are subject to change without notice. Errors will be corrected where discovered, and Lowe's reserves the right to revoke any stated offer and to correct any errors, inaccuracies or omissions including after an order has been submitted.

Comfortbatt R- 30.0 Attic Wall Unfaced Stone wool Batt Insulation 30-sq ft ( 23.0-in W x 47.0-in L)

Ratings & Reviews for ROCKWOOL Comfortbatt R- 30.0 Attic Wall Unfaced Stone wool Batt Insulation 30-sq ft ( 23.0-in W x 47.0-in L)

4.8
562
Review
 4.8 out of 5
562 Reviews


99% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise this insulation for exceptional thermal and acoustic performance, noting warmer homes, reduced energy costs, and significantly dampened noise. Installation is remarkably easy—it cuts smoothly, requires no special tools, causes no skin irritation, and fits snugly into tight spaces, making it ideal for DIY projects and renovations. Most customers declare they will never return to fiberglass, citing superior R-value, better durability, and resistance to fire, mold, water, and insects. A few mention blade dulling during large installations, but this minor drawback is vastly outweighed by overwhelming positive feedback.

Customer review summary generated by AI, including incentivized reviews.
562 Customer Reviews

Would Recommend

Anna was Fabulous. Quick and efficient. Don't lose her!!!

May 7, 2026
Verified Purchaser Lowe's Employee
Was this Review Helpful ?

High R value for Thickness

Just what I needed

April 21, 2026
Verified Purchaser
Was this Review Helpful ?

Better than fiberglass

Would Recommend

Easy to work with

April 2, 2026
Verified Purchaser
Was this Review Helpful ?

Great stuff, but not a lot of it.

Handy, easy to cut and install. Only get 4 batts per package, don’t doesn’t go a long way.

January 27, 2026
Verified Purchaser
Was this Review Helpful ?

Disappointed delivery communication

Would Recommend

Product was fine . Problem getting it to me .. Delivery was confusing and I had to go too store get it fixed . Naperville store very helpful MK and Ron excellent job . AJ delivery person excellent job . One person not naming was supposed to call AJ with correct phone number never did . AJ went to my neighbor got my phone number and called me to finish delivery

January 16, 2026
Verified Purchaser
Was this Review Helpful ?

Online order was sold by store

Would Recommend

My online order require the purchase of a minimum order of 12 packages of insulation. this was fine because I would require all 12 bundles to insulate my cathedral ceiling. When the order reached the store for delivery, six of the bundles were sold to another customer before it could be delivered to my home. When they delivered my order it was only six bundles. I had paid for 12 bundles. The Assocuate Manager apologized but said the only thing they could do was reorder the missing six bundles. I...

November 21, 2025
Was this Review Helpful ?

ProDesk

Would Recommend

The ProDesk person (Eternity) was extremely helpful with fulfilling my order for insulation.

October 16, 2025
Verified Purchaser
Was this Review Helpful ?

Would Recommend

This product is amazing. The order process and the delivery was seamless. Abby at the Tilton store was super kind and helpful in placing the order.

Was this Review Helpful ?

Terrible purchase experience

Would Not Recommend

Received a confirmation that my order was picked up today. Two months after it was ordered. I did not set foot in Lowes this week.

July 9, 2025
Verified Purchaser
Was this Review Helpful ?

Would Recommend

The insulation is great. The delivery was the problem. I painted extra for in house delivery and they left it on the curb. I complained and I was told someone would get back to me within 24 hours and it’s been 3 days. I should be reimbursed the delivery charge.

June 16, 2025
Verified Purchaser
Was this Review Helpful ?

Sound Deadening, very insulating

Would Recommend

Cuts like fresh bread, installs easily, insulated and sound deadened my 120 year old timber loft better than anything else I could have used

May 21, 2025
Verified Purchaser
Was this Review Helpful ?

Very sound dampening

Would Recommend

Easy to work with, do not need as much protection as with fiberglass - because of the dust and small pieces that occur you should wear eye protection, mask and while not necessary, I would recommend gloves.

March 22, 2025
Verified Purchaser
Was this Review Helpful ?