Internet #312713135

Model #919846

R-15 Thermafiber UltraBatt Unfaced Mineral Wool Insulation Batt 23in. x 47in. (16-Bags)

  • R-15 Mineral wool batt can be installed within exterior 2x4 wall
  • Easy to cut and install, even around construction irregularities
  • Fire resistant, mold resistant and non-corrosive
  • See More Details

Frequently Bought Together

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Price:
$125000

Product Overview

Thermafiber UltraBatt mineral wool is designed to provide excellent thermal insulation in residential and light commercial building. The semi-rigid batts are more dense than traditional batts or rolls and are quick and easy to install. UltraBatt products are non-combustible, moisture-resistant, non-corrosive and mold resistant.
  • Flexible Insulation is easy to cut and install, allowing it to conform to building shapes and construction irregularities
  • Thermafiber Insulation reduces the transfer of heat and cold through building structures to provide thermal comfort and continuous energy savings
  • Mold resistant
  • Provides fire resistance
  • Step 1 of installation: Measure and cut Insulation
  • Step 2 of installation: Squeeze and insert Insulation into desired space
  • Step 3 of installation: Release and let product expand within the wall
  • Shop all Owens Corning Thermafiber Mineral Wool Insulation here
  • California residents

Info & Guides

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Specifications

Dimensions

Coverage Area (sq. ft.)
38
Product Length (ft.)
3.91 ft
Product Thickness (in.)
3.5 in
Product Width (in.)
23 in

Details

Bag Size
3.9 ft. x 18 in. x 23 in.
Batt/Roll Size
3.91 ft. x 3.5 in. x 23 in.
Compatible Install Surface
Plywood,Plywood,Plywood,Plywood,Plywood
Coverage Area per Bag (sq. ft.)
37.53
Faced or Unfaced
Unfaced
Insulation Features
Fire Block Rated,Fire Block Rated,Fire Block Rated,Fire Block Rated,Fire Block Rated
Insulation Location
2x4 Wall,2x4 Wall,2x4 Wall,2x4 Wall,2x4 Wall
Insulation R-Value
R15
Insulation Type
Mineral Wool Insulation
Number of Bags
1
Pieces Per Bag
5
Pieces per Pallet
0
Product Weight (lb.)
39.5 lb
Returnable
180-Day
Roll or Batt
Batt

Warranty / Certifications

Warranty Information
3-Year Limited

Questions & Answers

57Questions18Answers

Can it be glued to inside of a metal roof? Any suggestions what adhesive to use?

Asked by Ralph February 27, 2021
2
Answers

I would not recommend gluing these batts directly onto a horizontal surface. These are unfaced, meaning there is no paper or foil on any part of the batt; any attempt to glue would result in direct contact with the adhesive and insulation as well as the covered surface and may result in the insulation separating.

Is this product a good alternative for insulating a van as compared to Havelok wool?

Asked by Larry December 24, 2020
2
Answers

Hello Larry, Owens Corning does not have recommendations for the use of building materials like insulation in vehicles. Thank you for your inquiry!

Im looking to insulate a wood framed pole barn that has only a metal sheet shell exterior current...

Asked by Shield December 23, 2020
1
Answer

Hello Shield, Pole barns are not typically designed to be insulated. Owens Corning does not have set recommendations for insulating pole barns because of this. We suggest contacting the manufacturer of the pole barn for their recommendations regarding insulation or there are contractors/companies that specialize in insulating pole barns that you may contact. Thank you for your inquiry!

Could you use these to soundproof a window from traffic noise?

Asked by Susie November 3, 2020
2
Answers

Hello Susie, The Thermafiber UltraBatt is designed to be installed between studs. We do not have recommendations on placing in a window for noise reduction. Thank you for your inquiry!

Want this for a ceiling with joist 12 inches on center. Can I get this?

Asked by Rick October 4, 2020
2
Answers

Yes, all you do is cut to size. I used a razor knife

What should I use to cut this?

Asked by Raych September 12, 2020
2
Answers

Hello Raych, Thermafiber UltraBAtt can be easily cut with a long serrated knife. Thank you for your inquiry!

Can I use this for fire licking between my new framed wall and concrete exterior wall

Asked by Andy May 31, 2020
1
Answer

Hello Andy, we will need more details in order to assist you. Please email Answers.Insulation@owenscorning.com. Thank you for your inquiry!

can i use this product to insulate my basement ceiling between the floor joists?

Asked by Jack April 27, 2020
2
Answers

Hello Jack, UltraBatts can be used; however, you may want to use thicker batts to completely fill the cavity or double layer of these. Thank you for your inquiry!

What is the approximate coverage of 16 bags?

Asked by Gilbert April 26, 2020
2
Answers

600.48 sq. ft.

Hi, I just wondering if I can use this for floor insulation in the attic, or do I need to use fac...

Asked by Von March 7, 2020
2
Answers

That is what we are using it for - in an old farmhouse.

R-15 Thermafiber UltraBatt Unfaced Mineral Wool Insulation Batt 23in. x 47in. (16-Bags) - page 2

Customer Reviews

  • 4.6
    out of 177 reviews
  • 93% recommend this product
5star-icon131
4star-icon33
3star-icon4
2star-icon5
1star-icon4
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Showing 1-10 of 177 reviews
This was very easy to cut using an insulation knife and installed between studs great. In my cas...
This was very easy to cut using an insulation knife and installed between studs great. In my case, some of the studs spacing was not 16" centers so I had to cut the insulation into multiple pieces to get it to fit. I found you could use the studs as a guide when cutting. For example, I pushed the insulation against the left stud of a pocket and used the inner edge of the right stud as my line to cut along the insulation. This seemed to work pretty well and went quickly. This was for a bathroom and, except for one exterior wall, mainly for sound reduction and it has definitely worked on that front. I can barely hear the shower running when not in the bathroom. I also noticed that the shower wall tiles don't get nearly as cold as they used to prior to insulating the walls, so an added benefit there. One minor note is that the insulation has a distinct smell upon opening it. I didn't find it offensive, but I could certainly seeing it bothering someone else. The smell dissipates so it's not like it's a permanent concern. Overall, very happy with this purchase and would definitely use it again.
by AC
2 people found this helpful
Great product installed so easy and don't have to worry about damage from the old plaster walls. ...
Great product installed so easy and don't have to worry about damage from the old plaster walls. the pink that was there was molded and useless. Will be picking up more well worth the extra few bucks.
by Matt
Did the job used it in the walls of a...
Did the job used it in the walls of a remodeling job. Fire and sound resistant along with R15 was good for us. Easy to work with - Not fiberglass.
by Michael
I was insulating a garage with 2x4 walls and a 2x8 ceiling. I doubled up the batts in the ceiling...
I was insulating a garage with 2x4 walls and a 2x8 ceiling. I doubled up the batts in the ceiling to achieve R30! This would not have been possible with the other insulation design for a 2x8 cavity. What I like best about working with this product is that it stays in place. Great friction fit. The only con is some of the batts were a bit fragile. There was definitely a difference in the resiliency and integrity of a few batts, but most were fine. A couple of batts had to be handled really carefully as they were sort of brittle and crumbling. But like I said most were fine. I love the fact the batts a designed to fit 2 vertically in a 92-5/8" stud cavity without any cutting. Installing the insulation in the ways went really easy. I used an electric carving knife for the cuts and this worked wonderfully. I will never use fiberglass pink insulation again after using this type of insulation. Easier to install, better R value and better fit.
by EagleLakeWoodworking
1 person found this helpful
I am a 67 year old female "rustic" DIYer. Was finally insulating an exterior concrete block wall...
I am a 67 year old female "rustic" DIYer. Was finally insulating an exterior concrete block wall in my laundry room. Put up a stud wall, air barrier, batt insulation (THIS PRODUCT), moisture barrier and drywall. This insulation made an immediate and HUGE temperature difference in my whole basement. Recommend without reservation. This product was easy to handle and apply. Fit into a standard stud wall as stated. However, when needed to resize, was easy to cut and fit. NON-ITCHING!!!!! Looked at other products, bought some. Found this product and returned the other stuff. Best decision. (Pictures are in reverse order. Oops.)
by RawFeederMom1
2 people found this helpful
So far I’ve used this product to insulate my garage. The noise from the garage door opening has b...
So far I’ve used this product to insulate my garage. The noise from the garage door opening has been noticeably dampened. I used roxul for my basement. There is very little difference between the products in my own opinion. Take care when pushing Owens into place to avoid fraying (roxul also did this). Others have used plywood for this, I managed with my hands just fine. I’m currently working on my homes exterior walls where standard fiberglass was installed, so I will update on its effect on my homes comfort. At half the price I wish I would have used in my basement. This is a quality product with great sound dampening and easy installation. I will continue to use.
by Kentucky
Easy to work with,I cut it with a bread knife!
Easy to work with,I cut it with a bread knife!
by rob
Excellent sound barrier. Very easy to work with. It has met my expectations.
Excellent sound barrier. Very easy to work with. It has met my expectations.
by Rod
bathroom project
Installed R-15 in bathroom wall around shower. Stiffness makes it easy to wedge in between the studs. Best way to cut is similar to a loaf of french bread. Less pressure , more sawing. I actually used a bread knife from kitchen. Handles differently than glass insulation.
by ChicagoTXN
7 people found this helpful
Definitely a 5 out of 5 for product performance, 4 out of 5 for ease of actual installation, but ...
Definitely a 5 out of 5 for product performance, 4 out of 5 for ease of actual installation, but 2 out of 5 for handling due to composition. Although it's generally expected that insulation is unpleasant to work with, this was extremely harsh to handle as a skin and mucous membrane irritant. Especially in a sweltering, tight area. It also occasionally crumbles, releasing even more particulates into the air. Just being in the same room with the raw insulation causes me discomfort, so be sure to read the safety precautions on the packaging prior to handling, and definitely do not allow children or pets near it. Respirator masks (3M model 8210 or equiv. are recommended) are an absolute must and I personally recommend shop-vac-ing the area ASAP with an appropriate filter to avoid tracking. Once it's installed, obviously all that matters from there on is ongoing product performance. There is no paper-backing, so there is no stapling and the batts cut like butter with an inexpensive insulation knife. I was initially anxious to get to work and tried to use a drywall saw for the first couple, but it made a huge mess. Don't do that - lol. When cut with the proper blade, the batts install impressively rigid between beams and stay nicely in place. I got this insulation for finishing the exterior walls of my basement and to weatherize a small, awkward, exterior-backed/attic-type crawl space that has been a heating/cooling nightmare for two bedrooms. In the basement, the vents aren't completed yet and the ceilings aren't insulated, so there no way to reference a change. But as for the aforementioned crawl space, there was an almost immediate temperature difference in the adjoining bedrooms after installation, as well as a notable sound barrier between the rooms it separates. So I'm quite confident in how it will handle in the basement. Almost everything about this insulation is pretty amazing; going greener with 70%+ recycled material, safety benefits with temperature thresholds of 2000F+, water-resistance and sound-proofing. I've also read that the lifetime energy savings produced via the mineral wool will exceed any difference in manufacturing energy of the fiberglass currently used. Just cover yourself well during installation, then kick back and enjoy the lifetime of energy benefits.
by UpgraderGirl
6 people found this helpful
Showing 1-10 of 177 reviews