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 29.9-sq ft ( 15.25-in W x 47.0-in L)

Ratings & Reviews for ROCKWOOL Comfortbatt R- 30.0 Attic Wall Unfaced Stone wool Batt Insulation 29.9-sq ft ( 15.25-in W x 47.0-in L)

4.8
534
Review
 4.8 out of 5
534 Reviews


99% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

The insulation is widely praised for its high quality, ease of use, and superior insulation and sound-deadening properties compared to traditional options. Customers highlight its fire resistance, moisture resistance, and ability to prevent mold and pests. The insulation is described as simple to cut and install with minimal mess. It provides excellent thermal and acoustic performance, keeping homes warmer and quieter. Customers overwhelmingly recommend the product and state they will continue to use it.

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

Comfort Batt

Once I started demolition I noticed the old insulation and it was wasn’t up to standard. I used the ROCKWOOL Comfort Batt insulation to bring the kitchen up to the building code. Easy to use and the home already feels better.

March 30, 2023

From rockwool.com

Best Insulation

I have used Rockwood in my exterior walls, interior walls, floor joists and most recently in the walls of my campervan. It is easy to work with, excellent for sound proofing, provides better fire protection and does not saturate with moisture. Best Insulation product for people who want the best Insulation with few trade offs.

February 23, 2023

From rockwool.com

Superior Product

Would Recommend

Superior product to fiberglass insulation. Exceeds fiberglass insulation in mould, combustion and moisture resistants.

January 4, 2023
Verified Purchaser
Was this Review Helpful ?

Basement rim joist insulation

Worked on removing and replacing the orig. fiberglass batt insulation in the basement. I chose the Rockwool Comfortbatt R15 batt since it appear to be a better product than replacing with new fiberglass batts. I think the Rockwool product was sightly more expansive, but I found it easy to work with. We'll see how good are the energy savings over time.

December 21, 2022

From rockwool.com

Rockwool rocks!

First time using Rockwool in our renovated home. As soon as we put it in the house was quieter and instantly warmer. We are now at the drywall stage and are only using two small electric portable heaters and the house is T-shirt warm! I can imagine how warm it will be once we turn the furnace on and how much money we will save in heating bills! The Rockwool Comfortbatt product is so easy to use and went up so quickly. We had one whole floor done in two days with just two of us doing the work. Wi...

December 13, 2022

From rockwool.com

Rockwool rocks!

First time using Rockwool in our renovated home. As soon as we put it in the house was quieter and instantly warmer. We are now at the drywall stage and are only using two small electric portable heaters and the house is T-shirt warm! I can imagine how warm it will be once we turn the furnace on and how much money we will save in heating bills! The Rockwool Comfortbatt product is so easy to use and went up so quickly. We had one whole floor done in two days with just two of us doing the work. Wi...

December 13, 2022

From rockwool.com

Great Material

Five star material here. Easy to cut and install, just select a good vapor barrier I chose Intello Membrane and done. I do like benefit of this material not being able to burn. And if it get wet it will dry out and will still do the job it was intended to do. And no itchy arms while installing it, perfect !

December 6, 2022

From rockwool.com

Great Material

Five star material here. Easy to cut and install, just select a good vapor barrier I chose Intello Membrane and done. I do like benefit of this material not being able to burn. And if it get wet it will dry out and will still do the job it was intended to do. And no itchy arms while installing it, perfect !

December 6, 2022

From rockwool.com

Easy to customize

Said goodbye to pink crap insulation and hello to lovely rockwool. Had major problems with squirrels in old log cabin unfinished basement ceiling. Once we cleared out the old insulation (riddled with poop and nests), we crossed our fingers that this new insulation would be inhospitable. The week after installation, they messed with one small section, which we pushed back into place with a garden hoe. I had to repeat this a few days later, but the insulation wasn’t destroyed just pushed out of pl...

December 6, 2022

From rockwool.com

Inspector was very impressed

DIY installed comfort batt in my 2 story 1200sq foot guest house workshop on top of 2 inch closed cell spray foam Extremely easy to work with. Love the tidy appearance and so did the inspector.

December 6, 2022

From rockwool.com

Comfortbatt for interior foundation walls

I've started to install Rockwool Comfortbatt insulation for my basement renovation, specifically for the interior foundation walls and rim joists. Using Rockwool, in combination with 2" rigid insulation meets the local building code requirements and has greatly improved the temperatures in my home, creating a much more consistent room temperature. The installation process was very simple, and I'd highly recommend this product over the competition.

December 1, 2022

From rockwool.com

Garage loft

Using rockwool in garage loft. Great product to use.

November 29, 2022

From rockwool.com

Perfect

Would Recommend

Easy to use,a bread knife cuts it easily. Neat and clean looking with sound dampening quality to boot. I Doubled up for R 60 in the old attic. No need to worry about it getting wet and it's super fire resistant. I tried the #cornings mineral wool because it wasn't available at the time and Rockwool is superior.

November 16, 2022
Was this Review Helpful ?

Best Product on the market

Rockwool Roxul insulation is the only product I will use. Roxul is so easy to install and works so well. Since this product came to market I have been so happy. In my opinion fiberglass insulation is so inferior to this product, for ease of installation, fire rating, moisture resistance, and does not compress over time. Roxul works so well that when I perform any insulation upgrades I know that I never have to worry about its performance in the future. This is definitely the only product I will ...

November 9, 2022

From rockwool.com

Rockwall is good stuff

Good stuff no itchesness after install good R value good sound barrier

November 3, 2022

From rockwool.com

Rockwall is good stuff

Good stuff no itchesness after install good R value good sound barrier

November 3, 2022

From rockwool.com

Rockwool R22 insulation

Would Recommend

This is a great product. Easy to use! We used it to insulate our garage! Worth every penny!

October 25, 2022

From rockwool.com

easy to use with no fiberglass

Would Recommend

this is easy to use with no fiberglass. we had it delivered and that turned out to be a good move.

October 18, 2022
Verified Purchaser
Was this Review Helpful ?

House

Good product , insulation and rating all in one. Not as itchy as fibreglass. We use this produce in all our commercial projects. Cheeper than using fibreglass

October 12, 2022

From rockwool.com