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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
569
Review
 4.8 out of 5
569 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.
569 Customer Reviews

Really easy to install.

Would Recommend

Product was cheaper than other options, easy to use, and minimum mess.

March 1, 2024
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Worth the price in ease of use alone

Would Recommend

It was easy to cut and install. Very friendly to bare skin. Not much irritation lie traditional fiberglass. Safer amount of particulate released into the air, although always recommended to wear proper breathing protection. Has a better R-Value per inch than fiberglass. Don't let the increased price deter you. This is about as good as it gets before spray-in insulation and has a lot of the same benefits.

February 6, 2024
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Insulation

Would Recommend

How well it insulations our home.

January 19, 2024
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wear personal protection

Would Recommend

easy to work with

August 31, 2023
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Great Product

Would Recommend

Easy to work with. Not as itchy as the pink stuff. Easy to cut/notch.

August 1, 2023
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Response from Rockwool Team

Thank you Kwhit. A serrated knife always makes the cutting as easy as cutting a loaf of bread.

Rockwool TeamAugust 17, 2023

rockwool

Perfect For Every Project

Would Recommend

I have been using ROCKWOOL since it was Roxul! The Comfortbatt thermal insulation offers a lot of big benefits. It’s easy to cut and install, holds its shape for a snug fit, resists mold, moisture and fire, all while providing reliable thermal performance. The stone wool batts are ideal for achieving a more durable and efficient home. I’ve trusted ROCKWOOL Comfortbatt insulation for my shows and personal projects for years! Disclosure: I am a long-standing ambassador of ROCKWOOL and its stone...

June 8, 2023

From rockwool.com

Very Good Product

I installed about 650 square feet of insulation in my attic and was plesantly suprised with the ease of installation of the ROCKWOOL Comfortbatt (R-15) material. I placed Comfortbatts in between the ceil joists (full dimesional 2x4 on 16 centers). I then placed rolled R-30 Fiberglass, perpendicular to the joist direction. The Comfortbatt did not generate the dust and fibers that I found were generated with the fiberglass batt installation. The ROCKWOOL material came in easy to manage packag...

April 28, 2023

From rockwool.com

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

Rock wool

The best in my 20 years of work with insulation this the best 👍🏾

March 14, 2023
Verified Purchaser
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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

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