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)

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...

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.

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.

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.

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...

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...

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 !

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 !

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...

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.

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.

Garage loft

Using rockwool in garage loft. Great product to use.

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 ...

Rockwall is good stuff

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

Rockwall is good stuff

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

Rockwool R22 insulation

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

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

The best choice for contractors.

My crew and I install Comfortbatt on a regular basis for residential projects. Both new construction and renovations can benefit from the many features of Rockwool such as fire resistance and sound deadening. One huge reason to use it in our coastal area of western Canada is the resistance to humidity and moisture. It’s the perfect product!

Filling every wall with it

One particular YouTube channel turned me on to this product. I bought a 50’s home that still had some weird Kimsul insulation in it. The R3ish this stuff was won’t cut it in New England winters. Gutted the second floor first and every wall upstairs now has rockwool in it. I love it. I don’t hear the highway anymore, the rooms stay perfect temp with the mini splits only. Easy to install and love how you can carve out the batt to fit where you need it. Going to put another order in soon for the fi...

Rockwool R30 attic install

I installed the Rockwool comfortbatt in my attic over this last winter in hopes that it would help keep my home cool over this summer. In my opinion it helped a lot, that being said there was no insulation in my attic before the rockwool. I will be installing some Rockwool in my crawl space over the next winter hoping this helps keep the heat/coolness in the home even better. Shawn Solis