Internet #303347118

Model # UB-40-P5D-23--47--121

Store SKU #1003933594

0047563712780

Owens Corning

R-23 Thermafiber UltraBatt Mineral Wool Insulation Batt 23 in. x 47 in.

$ 45 00
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Frequently Bought Together

Frequently Bought Together

Product Overview

Thermafiber UltraBatt mineral wool is designed to provide excellent thermal insulation in residential and light commercial building. The semi-rigid batts are denser than traditional batts or rolls and are quick and easy to install. UltraBatt products are non-combustible, moisture-resistant, non-corrosive and mold resistant.
  • Energy saving thermal insulation
  • Easy to install
  • Mold resistant
  • Provides fire resistance
  • Buying guide and insulation calculator:

    insulation buying guide
    Insulation calculator button
    "
  • California residents see Prop 65 WARNINGS

Product Overview

Model #: UB-40-P5D-23--47--121
Sku #: 1003933594
Internet #: 303347118

Thermafiber UltraBatt mineral wool is designed to provide excellent thermal insulation in residential and light commercial building. The semi-rigid batts are denser than traditional batts or rolls and are quick and easy to install. UltraBatt products are non-combustible, moisture-resistant, non-corrosive and mold resistant.

  • Energy saving thermal insulation
  • Easy to install
  • Mold resistant
  • Provides fire resistance
  • Buying guide and insulation calculator:

    insulation buying guide
    Insulation calculator button
    "
  • California residents see Prop 65 WARNINGS

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.

Key Features

Product Overview
Key Features
Thermafiber UltraBatt mineral wool is designed to provide excellent thermal insulation in residential and light commercial building. The semi-rigid batts are denser than traditional batts or rolls and are quick and easy to install. UltraBatt products are non-combustible, moisture-resistant, non-corrosive and mold resistant.
  • Energy saving thermal insulation
  • Easy to install
  • Mold resistant
  • Provides fire resistance
  • Buying guide and insulation calculator:

    insulation buying guide
    Insulation calculator button
    "
  • California residents see Prop 65 WARNINGS

Product Overview

Model #: UB-40-P5D-23--47--121
Sku #: 1003933594
Internet #: 303347118

Thermafiber UltraBatt mineral wool is designed to provide excellent thermal insulation in residential and light commercial building. The semi-rigid batts are denser than traditional batts or rolls and are quick and easy to install. UltraBatt products are non-combustible, moisture-resistant, non-corrosive and mold resistant.

  • Energy saving thermal insulation
  • Easy to install
  • Mold resistant
  • Provides fire resistance
  • Buying guide and insulation calculator:

    insulation buying guide
    Insulation calculator button
    "
  • California residents see Prop 65 WARNINGS

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.

Compare Similar

Compare Similar Products
Brand Owens Corning ROCKWOOL Owens Corning Owens Corning
Name R-23 Thermafiber UltraBatt Mineral Wool Insulation Batt 23 in. x 47 in. R-23 ComfortBatt Fire Resistant Stone Wool Insulation Batt 15 in. x 47 in. (12-Bags) 15 in. x 47 in. R-23 Thermafiber Ultrabatt Mineral Wool Insulation Batt (18-Bags) R-30 Thermafiber UltraBatt Mineral Wool Insulation Batt 23 in. x 47 in. (12-Bags)
Price
$45.00
$627.00 /pallet
$649.00 /pallet
$724.00 /pallet
Ratings (32) (487) (32) (1)
Insulation Location 2x6 Wall,Ceiling,Floor 2x6 Wall,Attic,Basement,Ceiling,Crawlspace,Floor 2x6 Wall,Ceiling,Floor Ceiling,Floor
Roll or Batt Batt Batt Batt Batt
Faced or Unfaced Unfaced Unfaced Unfaced Unfaced
Product Thickness (in.) 5.5 in 5.5 in 5.5 in 7.1 in
Coverage Area (sq. ft.) 7.5 ft² 39.8 4.9 ft² 7.5 ft²
View Product View Product View Product View Product

Specifications

Dimensions

Coverage Area (sq. ft.)
7.5 ft²
Product Length (ft.)
3.91 ft
Product Thickness (in.)
5.5 in
Product Width (in.)
23 in

Details

Bag Size
3.91 ft. x 20.50 in. x 23 in.
Batt/Roll Size
3.91 ft. x 5.5 in. x 23 in.
Compatible Install Surface
Plywood,Wood
Coverage Area per Bag (sq. ft.)
30
Faced or Unfaced
Unfaced
Insulation Features
Fire Block Rated,Friction Fit,Soundproofing Insulation
Insulation Location
2x6 Wall,Ceiling,Floor
Insulation R-Value
R23
Insulation Type
Mineral Wool Insulation
Number of Bags
1
Pieces Per Bag
4
Pieces per Pallet
12
Product Weight (lb.)
55.04 lb
Returnable
90-Day
Roll or Batt
Batt

Warranty / Certifications

Warranty Information
3-Year Limited

Specifications

Dimensions

Coverage Area (sq. ft.)
7.5 ft²
Product Length (ft.)
3.91 ft
Product Thickness (in.)
5.5 in
Product Width (in.)
23 in

Details

Bag Size
3.91 ft. x 20.50 in. x 23 in.
Batt/Roll Size
3.91 ft. x 5.5 in. x 23 in.
Compatible Install Surface
Plywood,Wood
Coverage Area per Bag (sq. ft.)
30
Faced or Unfaced
Unfaced
Insulation Features
Fire Block Rated,Friction Fit,Soundproofing Insulation
Insulation Location
2x6 Wall,Ceiling,Floor
Insulation R-Value
R23
Insulation Type
Mineral Wool Insulation
Number of Bags
1
Pieces Per Bag
4
Pieces per Pallet
12
Product Weight (lb.)
55.04 lb
Returnable
90-Day
Roll or Batt
Batt

Warranty / Certifications

Warranty Information
3-Year Limited

Questions & Answers

need to insulate my small home about 300 sq ft will this be good for ceiling and about how many w...

need to insulate my small home about 300 sq ft will this be good for ceiling and about how many would I need to cover all thank you
Asked by: glenda
The recommended R-value varies based on your climate zone. In northern climates, you shouldinstall two layers of R-23 insulation to achieve a suffieient insulation level. While 16 packages would likely be sufficient to achieve R-23 insulation, you will need 31-32 packages to achieve an R-46 total insulation. Whether you simply lay two batts atop each other, or cross them depends on the structure being insulated.
Answered by: Mark
Date published: 2019-01-28

Will this require a plastic moisture film placed on top of it after installation between the jois...

Will this require a plastic moisture film placed on top of it after installation between the joist and drywall?
Asked by: KeystoneCop
The moisture barrier is typically placed on the warm side of the exterior wall or ceiling. Mineral wool is naturally moisture resistant, but, to achieve better performance, barrier is typically installed. This barrier (poly film for unfaced insulation) serves not only as a vapor barrier, but also as a means to minimize air flow, thus further improving the energy efficiency of your home.
Answered by: Mark
Date published: 2018-12-27

how many of these do you need for a crawlspace 1440 sq. feet?

how many of these do you need for a crawlspace 1440 sq. feet?
Asked by: poe
You will likely need appx 74 bags of this R-23 insulation for an area of 1440 sf. It is always a good idea to have more though, to allow for waste. So, 80 bags wiould be a more appropriate amount to procure.
Answered by: Mark
Date published: 2018-08-21

would this product be suitable for a home crawlspace?

would this product be suitable for a home crawlspace?
Asked by: poe
Yes, mineral wool is usually a suitable product for applications such as crawlspaces.
Answered by: Mark
Date published: 2018-08-21
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Customer Reviews

R-23 Thermafiber UltraBatt Mineral Wool Insulation Batt 23 in. x 47 in. is rated 4.6 out of 5 by 32.
Rated 5 out of 5 by from Superior Insulation Ill never work with fiberglass batts again. This mineral wool cuts easily with a serrated bread knife and you don’t end the day with irritated skin or watery eyes. It has a nice density that allows it to be shoved in tight between studs instead of requiring stapling backing paper like the pink stuff. Remember your grandpa’s old army green wool blankets from his military service? Imagine one of those folded up to become 4-ply, and imagine having that stuffed between studs. It’s fireproof, rodents don’t like the mineral content, it’s sound deafening (even if you buy the one that isn’t advertised to do that), eco-friendly, easy to work with without causing health hazards, much lower chemical content providing cleaner air for home occupants and it just works beautifully. If it were to get wet, its fibrous enough to allow for air circulation and drainage and is mold and rot resistant. FAIR WARNING: Once you use this, you won’t ever use (or inhale) rolled bats of the itchy pink stuff again.
Date published: 2018-11-11
Rated 5 out of 5 by from Thermofiber is easy to work with about 10x better... Thermofiber is easy to work with about 10x better than fiberglass. Easy to cut with a kitchen knife , you can separate it by hand, no itch, stacks neatly in the correct stud space, etc. For those of us who live in rural areas the critters wont eat or burrow in it. To me it just installs faster.
Date published: 2019-07-09
Rated 5 out of 5 by from Product was easy to cut and install. Looking forward... Product was easy to cut and install. Looking forward to a warmer and cooler home.
Date published: 2019-07-02
Rated 5 out of 5 by from Easy to work with Easy to work with
Date published: 2019-07-16
Rated 5 out of 5 by from I've used many different types of insulation including the other brand or mineral wool insulation... I've used many different types of insulation including the other brand or mineral wool insulation that HD sells Roxul, so I'll try to help folks out with which I like for different applications. I have a highway near my house and I found this Ultrabatt insulation is better for sound deadening over regular fiberglass of the same or close to R value. I had originally put up R21 fiberglass on the wall facing the highway, I took it down to put up the mineral wool. My wife who has great hearing said she noticed a big difference in the quietness with the mineral wool. As far a how much warmer it is than fiberglass I did an experiment when the temp outside was freezing. I found the R23 Thermafiber was about 1 degree warmer than the R21 fiberglass. in a 2x6" wall. This could be because of the R21 vs the R23, I’m not sure. To compare Roxul (now called Rockwool at HD I believe) to the Ultrabatt, they both cut well with an ordinary cheap bread knife (like butter), just find the longest one you can and a point at the tip is helpful. Make sure when you cut the insulation the blade is at a perfect 90 degree angle. I had to sharpen mine several times in a motor driven kitchen knife sharpener to complete a 1000 sq ft bonus room above a garage. When installing any kind of mineral wool there are a few things to consider. First, it will take much longer to install as you are basically cutting each piece to fit and if there are wires or plumbing in the way it can take even longer. If you have a totally open (no wires or plumbing) perfect 16” OC walls it can be installed rather quickly or almost the same speed as fiberglass, it's when you hit the less than optimal wall cavity that's narrow, as the insulation will sometimes break apart as you try to install it, actually crumble. I found that the Roxul brand is a little better about not falling apart as easily and has a little less dust when cutting and installing, but both really REQUIRE that you use a dust mask & eye protection so... don't even think of not using them when installing this insulation! You should also wear long sleeves & long pants as the “sand” or stone dust might give you a rash. The way I ended up getting around wires & plumbing was to cut the batt to the height of the wire and then put the other cut piece on top to finish out the wall cavity, I first tried putting a slit on the back of a full piece of insulation & pressing it in over the wires, but found that the batt would just break apart (and not in a straight line). Trying to pull a full piece behind the wire was impossible, it just fell apart. In some walls with 4 or 5 wires spaced 3" apart proved much tricker. I ended up not only cutting the batt in sections top to bottom of about 10" each but splitting it depth-wise as well. Trying to pull or push any more than 10" behind wires will prove to be frustrating as the insulation just crumbles & falls apart. All this cutting, splitting & fitting is very time consuming, but I feel it's worth it in the long run, as my grandfather always said, it's cheaper & easier to do it right the first time than going back to fix it later. Cutting around electrical boxes also proved to be a little more time consuming than fiberglass. My final solution to this problem was to again cut the insulation horizontally to the height of the top of the electrical box, carefully carve out the space for the box (hight, width & depth) and then carefully push the "ear" behind the box & wires (not always perfect btw depending on how the wires lay), then take the remaining cut 1/2 a batt and butt it up to the first installed piece. After a while you feel more like you're cutting blocks of wood to fit spaces rather than installing insulation. There were places where the mineral wool insulation just wouldn't work (see pic below), like in some corners where there was only an inch opening to stuff in the insulation that had to be 5 1/2" wide, so I ended up using fiberglass, same with studs that had less than 2" of space between them. The pluses of Thermafiber Ultrabatt insulation are that it's fire rated, which I ended up needing. On one wall of my garage that attaches to the house, my local building inspector required that I use this (mineralwool) rather than fiberglass. To conclude, as stated above, Ultrabatt seems to be better at sound deadening than fiberglass, it's warmer as it's R23 whereas Fiberglass only comes in R21 for 2x6’s, and the last thing I haven't mentioned, is, it will not absorb water or grow mold. If there is a water leak you can remove the insulation, fix the leak and dry out the insulation and reinstall it. Oh... one more plus, I've also read on line that mice don't like building nests in mineralwool nor do they like digging thru it. If you’re willing to spend the time installing the Owens Corning Ultrabatt insulation, I highly recommend using it, you only get to insulate once! If you found this review helpful please click on the thumbs up button! Thanks!
Date published: 2018-11-02
Rated 4 out of 5 by from I wanted to replace the 30 year old fiberglass insulation in the ceiling of my 700 sq. ft. unfini... I wanted to replace the 30 year old fiberglass insulation in the ceiling of my 700 sq. ft. unfinished basement area with something that would provide sound deadening and look better than sagging fiberglass. This is my first time working with mineral wool and it's been a learning experience. It's very brittle - one batt I dropped broke in half. It needs to be compressed to push it between the joists. Pushing in and up with my hands would leave permanent dents. I ended up using a piece of 1/4" plywood, about 6" x 4" as a pusher to tuck the edges into the joists. This "tool" let me apply enough pressure without denting the insulation. It cuts easily, and precision cuts are possible and necessary since it's not very compressible. An electric knife worked well for making clean cuts, but I found it was faster to use a regular bread knife. There is fine grit created when cutting, so I tried to do most of my cutting outdoors. It wasn't really possible for one person to hold up the bulky 47 inch long full batts to the ceiling and then compress the edges to tuck them in. For a while I recruited my wife to help hold it up while I tucked, but this went pretty slowly. The full batts of 5.5" insulation also can't be slid lengthwise to close up gaps. I ended up cutting the batts in half so they were 23.5" long. These smaller batts could be installed by one person and slid to close up gaps. The full batts can also be split lengthwise into 2.75" depths. I did this to insulate an interior wall. As one might expect in a 30 year old house, not all my joists were exactly 16" on center. Even being 1/4" out would cause problems. If it was 1/4" too narrow there was a chance the batt would split from over compression if the edge wasn't trimmed. If it was 1/4" too wide the batt could fall out. In that case I cut the batt into lengths 1/4" longer than the space between the joists (i.e., 15.25" if the joists were 15" edge to edge) and put them in sideways. I've included a photo comparing a batt in a narrow joist opening vs one in a regular 14.5" opening. The batt on the left isn't fully expanded and has a bunch of divots along the edges from pushing on it to try to get it to fit. For all cuts I allowed 1/4" over the measured distance and this seemed to work well. Joints were tight and pieces stayed in place. Because this was old work and a lot of cutting was required, it took quite a while to install. I think we managed to install about 30 sq ft an hour, with my wife unbundling and cutting and me measuring and installing. I'm pretty happy with the result - it looks nicer than the old fiberglass, should be warmer, and as an added bonus should reduce sound transmission from my music system to my wife's office upstairs over the unfinished area.
Date published: 2018-07-12
Rated 5 out of 5 by from I installed this over 1” of closed cell foam in... I installed this over 1” of closed cell foam in a spare room above the garage. Combined with the foam I was able to get an R value of 30 with only a 7” rafter. It’s easy to work with and made the room dead quiet. I plan on going this route with all of our vaulted ceilings in this late 70’s house.
Date published: 2018-12-07
Rated 5 out of 5 by from When I bought my home in 1984 we had no access to the attic, well I have 3 attics it is a modern ... When I bought my home in 1984 we had no access to the attic, well I have 3 attics it is a modern design home, one is over a attached garage, one is over a Bedroom and the 3rd is the entire second floor. When I noticed a leak on the roof, I was concerned it was a leak in the singles, but no it was the AC duct work which had deteriorated and started to condensate and therefor leaking water. This led to two discoveries one, I had to replace my duct work, two I had zero insulation in my attic. This is where the Owens Corning® Thermafiber® R-23 mineral Wool Insulation comes in. It is R-23 which is much better than NOTHING, it is fire, water resistant and reduces sound. I am 65 plus so the hardest part was lifting, carrying each 27 lb bag (which covers 19.6 square feet) up stairs and or up the ladder through the attic access door, one area was so tight that I had to work with a single bat at a time, which was much easier to get up the ladder. Despite long selves and a jump suit my arms were irritated from carrying it, the fibers must have worked through my clothing. The next hardest part was crawling around in the attic, even at night it was 90 plus degrees, I used LED lighting just to cut down on heat, I did not use a fan; I tried but! I noticed it was stirring up dust, not a good idea on a project with something you need to wear a face mask and goggles for. I discovered that the easiest way to cut this was with a inexpensive electric knife. It worked like a charm. It pressed easily between the rafters? It is not unlike working with a crumbly, itchy Styrofoam, you can cut it with any serrated knife but with the electric one it crumbles less, and cutting holes for outlet boxes is a snap. My home is quieter, I can no longer hear the neighborhood cats or squirrels running across my roof. It is too soon to have any numbers on electrical savings but it is safe to assume I will, since I had nothing before.
Date published: 2018-06-30
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