Internet #205972541

Model # RXCB351525

0774783471950

ROCKWOOL

R-15 ComfortBatt Fire Resistant Stone Wool Insulation Batt 15 in. x 47 in. (12-Bags)

  • Maintains R-Value year after year
  • Fire Resistant & Water Repellent
  • Ease of Installation - Cuts Easily & Friction Fits
$ 685 00 /pallet
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Frequently Bought Together

Frequently Bought Together

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Product Overview

  • Maintains R-Value year after year
  • Fire Resistant & Water Repellent
  • Ease of Installation - Cuts Easily & Friction Fits
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)
  • Excellent sound absorbency growth
  • Water and moisture resistant; does not absorb moisture to maintain insulating value
  • Easily cut
  • Does not rot or promote growth of fungi or mildew
  • 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 Energy Efficiency
  • Buying guide and insulation calculator:

    insulation buying guide
    Insulation calculator button
    "

Product Overview

  • Maintains R-Value year after year
  • Fire Resistant & Water Repellent
  • Ease of Installation - Cuts Easily & Friction Fits
Model #: RXCB351525
Internet #: 205972541

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)
  • Excellent sound absorbency growth
  • Water and moisture resistant; does not absorb moisture to maintain insulating value
  • Easily cut
  • Does not rot or promote growth of fungi or mildew
  • 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 Energy Efficiency
  • Buying guide and insulation calculator:

    insulation buying guide
    Insulation calculator button
    "

Info & Guides

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Compare Similar

Compare Similar Products
Brand Owens Corning Owens Corning ROCKWOOL Owens Corning
Name R-23 Thermafiber UltraBatt Mineral Wool Insulation Batt 15 in. x 47 in. 15 in. x 47 in. R-23 Thermafiber Ultrabatt Mineral Wool Insulation Batt (18-Bags) R-15 ComfortBatt Fire Resistant Stone Wool Insulation Batt 15 in. x 47 in. (12-Bags) R-30 Thermafiber UltraBatt Mineral Wool Insulation Batt 23 in. x 47 in. (12-Bags)
Price
$29.70
$649.00 /pallet
$685.00 /pallet
$724.00 /pallet
Ratings (31) (31) (490) (1)
Insulation Location 2x6 Walls,Ceilings,Floors 2x6 Walls,Ceilings,Floors 2x4 Walls,Attics,Basements,Ceilings,Crawlspaces,Floors Ceilings,Floors
Roll or Batt Batt Batt Batt Batt
Faced or Unfaced Unfaced Unfaced Unfaced Unfaced
Product Thickness (in.) 5.5 in 5.5 in 3.5 in 7.1 in
Coverage Area (sq. ft.) 19.6 ft² 19.6 ft² 59.7 22.5 ft²
View Product View Product View Product View Product

Specifications

Dimensions

Coverage Area (sq. ft.)
59.7
Product Length (ft.)
3.91 ft
Product Thickness (in.)
3.5 in
Product Width (in.)
47 in

Details

Bag Size
ft. x in. x in.
Batt/Roll Size
3.91 ft. x 3.5 in. x 47 in.
Faced or Unfaced
Unfaced
Insulation Features
Friction Fit
Insulation Location
2x4 Walls,Attics,Basements,Ceilings,Crawlspaces,Floors
Insulation R-Value
R15
Insulation Type
Mineral Wool Insulation
Number of Bags
12
Pieces Per Bag
12
Product Weight (lb.)
48.9lb
Returnable
90-Day
Roll or Batt
Batt

Warranty / Certifications

Warranty Information
No

Specifications

Dimensions

Coverage Area (sq. ft.)
59.7
Product Length (ft.)
3.91 ft
Product Thickness (in.)
3.5 in
Product Width (in.)
47 in

Details

Bag Size
ft. x in. x in.
Batt/Roll Size
3.91 ft. x 3.5 in. x 47 in.
Faced or Unfaced
Unfaced
Insulation Features
Friction Fit
Insulation Location
2x4 Walls,Attics,Basements,Ceilings,Crawlspaces,Floors
Insulation R-Value
R15
Insulation Type
Mineral Wool Insulation
Number of Bags
12
Pieces Per Bag
12
Product Weight (lb.)
48.9lb
Returnable
90-Day
Roll or Batt
Batt

Warranty / Certifications

Warranty Information
No

Questions & Answers

what should I buy for a vapor barrier in front of Roxul ComfortBats?

fairfax county code for my basement remodel says: A minimum of R-13 battened insulation (with a vapor barrier on the warm side of the wall) should be installed for the full height and length of the basement wall. what should I buy for a vapor barrier in front of Roxul ComfortBats?
Asked by: Dan
Don't use a vapor barrier for below grade installations. The old notion was to put it on the surface facing a conditioned surface. Yes, that does keep moisture from migrating from the room into the wall. But.... the cement wall is itself absorbing moisture from the surrounding earth and then dispensing moisture. And if there's a vapor barrier in place then the moisture gets trapped. There is significant information on this online published by the US government, Fine Homebuilding, Youtube, etc.. When I was finishing my basement the building inspector insisted on the vapor barrier. I then pointed him to the US government website saying that such a barrier was outdated and indeed causing mold problems in the wall. He thanked me and accepted the rationale. Of course you should use a dehumidifier if you have warm humid summer months. And good air movement (air returns for HVAC systems) is helpful as well.
Answered by: BobP
Date published: 2019-01-23

Can I use this ComfortBatt into the wall between bedrooms and bedrooms? I check the specificati...

Can I use this ComfortBatt into the wall between bedrooms and bedrooms? I check the specification this type"comfortBatt" is against the exterior wall and celing. another type "Safe 'n' Sound " from same company is for room and room.
Asked by: Iloveshopping
I think it could be used on interior walls. The Rock Wool web site can tell you the specific differences between the two products. I think the differences are negigible.
Answered by: Greenfarmer
Date published: 2019-01-29

Is there an easy way to cut the ComfortBatt product lengthwise to trim it down to 1 1/2" thick? I...

Is there an easy way to cut the ComfortBatt product lengthwise to trim it down to 1 1/2" thick? I am interested in buying your ComfortBatt product for insulating our walls, however we have only 1 1/2 inches of depth because we are putting the insulation against cinder block walls which have 1 1/2" deep furring strips attached.
Asked by: hellothere
This product is very easy to work with. You can use a 2x4 as a guide and use a serrated knife to cut the length you need. If you are needing to thin a piece out make a cut at the top with grain and pull down slowly like when you pull the non sticky part of a band aid off the sticking part. This is the best way I can describe it. It is way easier that that sounded. Great product to work with.
Answered by: Bemgolf4
Date published: 2019-01-04

do you offer a product with R value and sound absortion capability?

I noticed that the Safe and Sound rock wool has no R value listed. But the Comfortbatt is R15. If they are both made of the same materials how can the difference be so dramatic? I am building a one room music studio that is separate from my house. It is a 10x12 room with 8 foot walls. I need to insulate against the weather and against sound transfer. What do you suggest? Thanks you
Asked by: Kim
Go to their website, they do
Answered by: JMO
Date published: 2018-04-26
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Customer Reviews

R-15 ComfortBatt Fire Resistant Stone Wool Insulation Batt 15 in. x 47 in. (12-Bags) is rated 4.8 out of 5 by 490.
Rated 5 out of 5 by from If you are remodeling an older home that does not have standard 16 inch or 24 inch centers this i... If you are remodeling an older home that does not have standard 16 inch or 24 inch centers this is a life saver. My old Mill House had every size known to man for spacing. This product allowed me to cut to measure every piece to ensure good and complete coverage. I bought an electric knife (think cutting turkey on Thanksgiving) and it was a snap to cut and install. LOVE This Product.
Date published: 2019-05-19
Rated 5 out of 5 by from We are very happy with this product. ... We are very happy with this product.
Date published: 2019-05-15
Rated 5 out of 5 by from NEVER BUY ANY OTHER BRAND AGAIN!! We use Roxul on every renovation product we do. Insulated a Garage in 95 degree heat, when the garage maintained a 72 degree temperature. It cuts cost on heating and cooling a house bc of the far superior insulation properties is has over other brands. It won't sag over time either like other brands, making your house envelope not sealed. Ever since mike holmes introduced it on his show, i was waiting for it to come to the United states. I would like for Roxul to be an industry standard in the building trade and put those "other" companies out of business lol.
Date published: 2017-11-25
Rated 5 out of 5 by from Insulation that doubles as sound quality control. These photographs are from a whole house remodel. We actually put a lot of thought into what product to use for this property. This home is close to an interstate so sound control was high on the list of targets for this renovation. We were scheduled to install spray foam but the contractor that was scheduled backed out at the last moment. This product ran neck and neck during my comparison, so we just adjusted the product & continued with the schedule. The installation was simple & went quickly. The material cuts easily with a serrated knife. Post installation the effects on the quality of sound were immediate. In areas were we installed this material on the exterior wall and the safe-n-sound material on the interior wall (sound control) the deadening of sound was amazing. This was sound quality was observed prior to the drywall installation. This product is roughly 3 to 4 times the cost of fiberglass insulation, and approximately 1/2 the cost of spray foam insulation. If you are able to be persuaded, use this product. The increase in cost is clearly of set by the value in the quality of sound. Sound quality is something that is generally overlooked, but when it is poor it will decrease the value of your improvement. This product has too many additional qualities above R value to select any other. I recommend it.
Date published: 2016-06-28
Rated 5 out of 5 by from We won't use anything but this product in our builds! We do both custom and high volume manufacturing for tiny homes on wheels. It's important to us that the products we spec out to use are easy to install and work effectively for our applications. This product does exactly that. Sounds carry far and wide even in tiny homes. So, when we have new families moving into a small space, this product makes an excellent noise dampener in between closed off rooms to provide an element of privacy where it can normally be hard to find. Nevermind its obvious positives, this product is just far superior at the end of the day. It's our gold standard for each home that we send out of our shop and it makes us proud!
Date published: 2018-03-12
Rated 5 out of 5 by from This should make regular fiberglass insulation obsolete I'm remodeling my 1950 mid century modern home one room at a time. I started with the hardest room to heat & cool, knocked out the old plaster & had the room sprayed with rigid & soft foam. The guys rushed the job & left some thin spots and even bare wood showing thru. I wanted to fill voids with Roxul but could not find it anywhere in Oklahoma so I hung the drywall anyway. Since then I've found a dealer 30 miles from me that can order it. I've since used Roxul in my sun room & garage. I like it better than the foam & I can easily install it myself.
Date published: 2018-07-19
Rated 5 out of 5 by from The amount of sound reduction is immediately noticed So far, I have bought 5 packages of the comfortbatt to finish my garage and I don't have plans to stop there. I am insulating and finishing our 2 car garage and when just one wall was insulated the noise reduction was already very noticeable! It is easy to cut, easy to install, easy to notice a positive difference! I am already planning on using the safe'n'sound on my next project. The only complaint I have is that for as heavy as the packages are the bags tear too easily trying to load and unload them. But, if that is my worst complaint I think I can manage. Going to enjoy the benefits of this insulation for years to come!
Date published: 2018-07-21
Rated 5 out of 5 by from Best insulation product by far! If your not familiar with this product you need to review it online before investing in any fiberglass products. Superior insulation properties, sound deadening, and installation plus it doesn't itch! I used in a complete remodel and although it's more expensive, it is worth the extra money. The friction fit feature makes installation in stud walls a cinch and under crawl spaces you need nothing extra to hold it in place between joists. The only better insulation available is spray foam, and it's costs are prohibitive in my opinion.
Date published: 2015-06-24
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