R-15 Comfortbatt 3-1/2 in. x 15 in. x 47 in. Fire Resistant Stone Wool Insulation Batt (59.7 sqft)(12-Bags)
$788.45
/pallet
Pay $738.45 after $50 OFF your total qualifying purchase upon opening a new card. 
Apply for a Home Depot Consumer Card- Maintains R-Value year after year
- Fire Resistant & Water Repellent
- Ease of Installation - Cuts Easily & Friction Fits
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Product Details
ROCKWOOL COMFORTBATT is a semi-rigid stone wool batt insulation for exterior wood and steel stud applications in both new construction and renovations. It features a unique flexible edge designed to compress as the batt is inserted then spring back, expanding the batt against the frame studs to give a complete fill. This flexibility ensures the expected R-value is achieved and maintained. On-combustible and fire resistant, COMFORTBATT will not develop toxic smoke or promote flame spread, even when exposed directly to a fire. It is also offers water and moisture resistance and excellent sound absorbency. COMFORTBATT is an effective way to improve a home's energy efficiency. It is GREENGUARD Gold Certified and contributes to a healthier indoor environment.
- Fire resistant due to its high melting temperature of 1177°C (2150°F)
- Stone wool provides excellent noise reduction and sound absorption to help you create quieter, more productive environments.
- Water and moisture resistant; does not absorb moisture to maintain insulating value
- Lightweight and easy to install, cut using a serrated knife and compression fit into place
- Water resistant, stone wool does not rot or promote the growth of mildew, fungi or mold
- Flexible edge springs back, expanding the batt against the frame studs to provide a complete fill
- GreenGuard gold certified for indoor air quality
- 12-bags included on a pallet
- Click here to learn more about Eco Options and Energy Efficiency
- Buying guide and insulation calculator:
![insulation buying guide](https://inlinecontent.thdstatic.com/pre/082014/21/INSULATION_MODAL.jpg")
- Return Policy
Specifications
Questions & Answers
73Questions
Q:Does this mineral wool insulation have formaldehyde?
by|Oct 17, 2023
2 Answers
Q:are masks and gloves required during installation.
by|Oct 11, 2022
2 Answers
Q:A company just finished fixing my cracked concrete block basement wall, can this material be applied directly to the basement walls?
by|Sep 20, 2022
1 Answer
Q:What is the difference between the comfort batt and the soundproofing batt? I like the qualities of both? Is the comfort more dense compared to the sound proofing?
by|Sep 15, 2022
1 Answer
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Jun 8, 2023
Perfect For Every Project
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 wool insulation products and have previously received products in-kind. Although compensated for my role as an ambassador, my review is based on my first-hand experience using ROCKWOOL products and on my belief in their performance and benefits to buildings and occupants. I regularly used ROCKWOOL stone wool insulation products prior to establishing an ambassador relationship with ROCKWOOL. This review reflects my own honest opinion.
by
Customer review from rockwool.comApr 28, 2023
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 packaged bundles and when opened the material expanded very nicely. It cut easily with the bread knife as desribed.
I did find inconsistencies in the cohesiveness of the Comfortbatts. Some were very cohesive and I could grab them with my hand and easily slide them into place between the ceiling joists, while other Comfortbatts would pull apart when I tried to grab the batt and slide it between the joists. Overall, I do like the general density and noise reduction of the Comfortbatts.
I used the hybrid ROCKWOOL/fiberglass system to help reduce the overall cost, with the fiberglass having a higher R-value and costing about $300 less than the ROCKWOOL for the same area.
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Customer review from rockwool.comMar 30, 2023
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.
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Customer review from rockwool.comFeb 23, 2023
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.
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Customer review from rockwool.comDec 21, 2022
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.
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Customer review from rockwool.comDec 13, 2022
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.
Will only use Rockwool from now on. We have recommended the comfortbatt and Rockwool comfort board to our daughter and husband as they will be doing a renovation to their home soon.
So pleased with this company and products.
Thank you!
by
Customer review from rockwool.comDec 13, 2022
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.
Will only use Rockwool from now on. We have recommended the comfortbatt and Rockwool comfort board to our daughter and husband as they will be doing a renovation to their home soon.
So pleased with this company and products.
Thank you!
by
Customer review from rockwool.comDec 6, 2022
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 !
by
Customer review from rockwool.comDec 6, 2022
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 !
by
Customer review from rockwool.comDec 6, 2022
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 place. Since then, no issues (about 2 months as of this writing). There are many wires and pipes (for geothermal heating) in that basement ceiling, so installation went slowly in some sections. But the stuff cuts so easily that it’s not hard to customize. Just always “measure twice, cut once” as my father used to say. I’m not a contractor, not even close. Just a homeowner capable of the most basic home maintenence. I found rockwool comfortbatt easy to work with and was very proud that we could do this ourselves!
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Customer review from rockwool.com0/0