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Comfortbatt R- 23.0 Attic Wall Unfaced Stone wool Batt Insulation 37.5-sq ft ( 23.0-in W x 47.0-in L)

Ratings & Reviews for ROCKWOOL Comfortbatt R- 23.0 Attic Wall Unfaced Stone wool Batt Insulation 37.5-sq ft ( 23.0-in W x 47.0-in L)

4.8
487
Review
 4.8 out of 5
489 Reviews


99% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

The Rockwool insulation is praised for its ease of installation, superior insulating properties, and excellent sound-dampening capabilities. Customers highlight its dense, durable construction that maintains its shape well. The insulation is also noted for its fire-resistance and mold/mildew resistance. While it may be slightly more expensive than fiberglass, reviewers feel the added benefits are worth the cost, providing superior thermal and acoustic performance.

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

Great product and is so much better than fiberglass!

Would Recommend

Product is nice and thick and fits the stud bays very nice! Product is also heavier then fiberglass!

December 29, 2016

From rockwool.com

Very happy

Would Recommend

We used this product for the walls and joist headers in our basement, which is a "split level" basement (ie. not true basement because it's only 3-4 feet below grade). Overall, we were impressed with the product, especially for two DIY hesitant people. We used both the R14, 2x4, on the 16" for wood and the R24, 2x6, on the 16" for wood. We purchased about 16 total. We used the denser batts for the joist headers and for two walls. They are much more stiff and not as easy to manipulate, but t...

December 23, 2016

From rockwool.com

I keep buying it!

Would Recommend

Fixing up my 100 yr old home with this insulation. It is fantastic.

December 20, 2016

From rockwool.com

The torch on a batt sold me years ago.

Would Recommend

The very first time I saw ROXUL at a show and there was a torch up against it and not burning at all. It has been nothing but ROXUL that I have used in any renovation.

December 19, 2016

From rockwool.com

Excellent product, easy install, way better performance

Would Recommend

Have used Roxul in bedroom walls, mudroom floor walls and cathedral ceiling, and basement walls. This is so easy to use, fits extremely well and reduces air movement in joist spaces. I have tested the way it repels moisture and held a propane torch to it. Just amazing and feel safer in my old home with it in the walls. The only negatives I have experience are that it is a bit tricky to install between old rough sawn studs and that the two pieces in the ends of the package take a while to "fluff...

December 19, 2016

From rockwool.com

I have used this product in my walls and ceiling

Would Recommend

I haven't found any thing bad, I like the comfort I get from knowing how well protected I am , from water and fire and mold protection. Plus the savings on my hydro bill.

December 3, 2016

From rockwool.com

I would definately buy this product again!

Would Recommend

I used this product to insulate my attic and was very impressed with this product. Being able to cut this insulation so easily to the required sizes was especially notable. The old insulation in my attic was extremely degraded. After removing the old insulation and installing the ROXUL, I could immediately tell a difference in heat retention and a decrease in drafts. I will continue to use ROXUL for any insulation project in the future.

November 29, 2016

From rockwool.com

I am very satisfied with this product.

Would Recommend

My 17 year old son' re-insulated my attic for me this summer. I saw the product on a DIY video and could not believe how easy it was for them to do this project. They thought it was going to be difficult but when they discovered how easy it was, they finished the attic in no time at all.

November 28, 2016

From rockwool.com

This product was easy to install.

Would Recommend

My mom wanted to re-insulate the attic to prepare for the winter. I completed the project with my twin brother, Big Mike and it was so easy. We were 17 years old and completed the attic within less than 1/2 day. We would recommend this product for sure.

November 28, 2016

From rockwool.com

Definitely worth the money!

Would Recommend

My husbands and I re-finished our basement and added Roxul Comfort batt insulation, it was so easy to cut to size and install and our finished rec room is so comfortable now

November 24, 2016

From rockwool.com

the best

Would Recommend

Lower price

November 22, 2016

From rockwool.com

GOT THE JOB DONE!

Would Recommend

USED THIS PRODUCT DURING AN ADD ON PROJECT TO OUR HOME.

November 22, 2016

From rockwool.com

the best product I have tried

Would Recommend

The best product in the market.

November 20, 2016

From rockwool.com

this is the second time i have bought this product

Would Recommend

I feel that this product is a better product than the pink insulation

November 18, 2016

From rockwool.com

easy to use, less itchy than fiberglass

Would Recommend

I found it very easy to install and was suprised to find little itchiness

November 16, 2016

From rockwool.com

I will never buy fiberglass insulation again

Would Recommend

Prior to discovering Roxul ComfortBatts, I had used fiberglass batt insulation. Not only does Roxul have all of the pros listed above, it's got a greater R-Value per inch than fiberglass batts, meaning it is easier to get better thermal performance in retrofit installations. It is a little more difficult to find at lumberyards than the fiberglass batts, but it is worth seeking out. While I think the product is a good value, if they could bring the price down a little it would *really* put fib...

November 13, 2016

From rockwool.com

Wonderful product. Will never use fiberglass insulation

Would Recommend

Love it. Great sound barrier also

November 13, 2016

From rockwool.com

Great, easy to use product

Would Recommend

Used this product for the walls and attic above a garage, makes for a warm and cozy room, also dampens sound.

November 12, 2016

From rockwool.com

Great product!

Would Recommend

This was so easy to use! It insulated my basement well. I can notice a big difference in how warm my basement is now. Great value and great product!

November 11, 2016

From rockwool.com

Raising the comfort level

Would Recommend

Added to my attic to increase R value

November 10, 2016

From rockwool.com