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  • bathroom project
  • January 19, 2019
  • Recommended Product

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.

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ChicagoTXN

6 out of 6 people found this helpful
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By: ChicagoTXN
  • Definitely a 5 out of 5 for product performance, 4 out of 5 for ease of actual installation, but ...
  • August 22, 2018
  • Recommended Product

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.

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UpgraderGirl

Martinsburg, WV
5 out of 5 people found this helpful
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By: UpgraderGirl
  • Works as expected for soundproofing a basement. Built a home...
  • January 01, 2019

Works as expected for soundproofing a basement. Built a home studio in the basement and this was great for sound absorption panels too.

Eric

4 out of 4 people found this helpful
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By: Eric
  • Being in the North East, insulation is am important part of my home. I wasn't aware of this type ...
  • November 30, 2017
  • Recommended Product

Being in the North East, insulation is am important part of my home. I wasn't aware of this type of insulation until I started doing some research. Using the old style fiberglass insulation was a bit of paint due to the fact you need to staple it, which added an extra step. The Thermafiber insulation is much for efficient than the old fiberglass stuff. The first project I needed to use this for was to insulate the ceiling joists in our furnace room. Above the furnace room is our family room and the floor gets really cold in the winter time. Also, while being cold, all my mechanicals are in the furnace room and make a lot of noise. I killed two birds with one stone on this one, as the Thermafiber is providing a warm floor and at the same time keeping the sound at a desirable level. The other feature I like is the fireproof rating, which make it perfect for a room with multiple sources of ignition. Installation can be a little tricky, as these pieces are a tight fit. If you put them up as is, you will need bang them up in place with your hands, and lots of little fibers will make a mess. I find the best way is to measure between the joists and add 1/8th inch and cut the excess with a serrated knife(really easy to do). Once that is done you can push them up into the ceiling easily and they will stay without any staples, etc. At this point I have one layer, providing R-15. I will see how that continues to work and may add another layer to provide R-30. Each length is 3" thick, so two will fit up in the joists if need be. Overall this is a great alternative to the other types of insulation and make a tough job a little easier.

Pros Easy to Install, Easy to Use, Easy to Work With, Good Shape, Good Size & Weight, High Quality, Light Weight, Performs Well, Quiet, Seals Well, Straight

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DannyT

Bristol, CT
35 to 44, Male
3 out of 3 people found this helpful
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By: DannyT
  • We had interior walls with 23” opening. This worked very...
  • March 16, 2019

We had interior walls with 23” opening. This worked very well for our sound deadening project.

HomeDepotCustomer

3 out of 3 people found this helpful
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By: HomeDepotCustomer
  • They delivered my R-15 THERMAFIBER UNFACED MINERAL WOOL INSULATION. While the project is not done...
  • July 09, 2018
  • Recommended Product

They delivered my R-15 THERMAFIBER UNFACED MINERAL WOOL INSULATION. While the project is not done yet I wanted to write this review now so anyone out there like myself can benefit from what I learned about installing mineral wool insulation. First, I want to say I believe this is a superior product when compared to fiberglass when it comes time to install it. The four foot bats are easier to work with and there is no fiberglass to contend with, however there is some dust so I do recommend a dust mask. Also, I have found there are some other considerations when installing mineral wool. That is why this review may be helpful to someone using the product for the first time. if your studs don't always fall 16" on center or they have a bow in them and you may need to put some pressure to on them to push the bats into the wall cavity. Do so with care or you will put holes in your insulation because you crushed it. So I am including some tips and photos on how to avoid that and trim your bats if necessary. There are two tools you need for this job a serrated kitchen knife and a piece of scrap wood about 12" x 40" it doesn't have to be exact. Put the scrap wood on the face of the bat and put as much pressure as needed to get it between the studs. But if you just need to trim a tight spot insert your kitchen knife between the stud and the insulation and use a sawing motion to cut away the excess material. You can also use your push panel to cut the pieces to size since you now have a straight edge handy. I gave product 4 stars because there is a slight learning curve for installing it but if I don't have anymore issues I will revisit this review when the project is complete and bump it up five.

Pros Easy to Work With, Good Size & Weight, Seals Well Cons dust

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SamSC

SC
55 to 64, Male
3 out of 3 people found this helpful
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By: SamSC
  • I'm just getting a good start on my insulation project for my shop and some updates in my home, b...
  • December 02, 2017
  • Recommended Product

I'm just getting a good start on my insulation project for my shop and some updates in my home, but I'm very impressed with the Owens Corning Thermafiber Ultrabatt mineral wool insulation. It's very dense and fits nicely inside the studs without any slumping and holds it's shape very well, which is really great for an insulation that doesn't have paper backing. It's easy to cut. I'm impressed with the insulating value (R15) and also the higher fire rating of this insulation. I'd definitely recommend wearing a good dust mask since the fine fibers from cutting can irritate your throat and lungs--and especially for safety. I'm looking forward to completing my project and would definitely recommend the Thermafiber Ultrabatt R15 insulation for home and professional use.

Pros Easy to Install, Easy to Use, Easy to Work With, Economical, Good Shape, Good Size & Weight, Great Value, High Quality, Quiet, Seals Well, r15 insulation vlaue, excellent fire rating, fits snugly and securely between the studs, easy to cut, holds its shape, multi use for walls ceilings basements etc.

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Rockhunter

Idaho
55 to 64, Male
3 out of 3 people found this helpful
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By: Rockhunter
  • I wanted to use this material for several reasons. Owens Corning is a name I trust and has been a...
  • June 30, 2018
  • Recommended Product

I wanted to use this material for several reasons. Owens Corning is a name I trust and has been around a long time. I researched this product, and like the sound deadening, water and fire resistance. I used this 3.5" R-15 in the attic walls, bedroom, staircase and Great-room. This area is one attic but kind of broken up (staggered). My first floor is larger than the 2nd so there is a kind of angled attic which has a wall with the second floor. (I hope you understand that) When we bought our home in 1984 there was no attic access, it was not until I needed to get into the attic for AC Duct repairs that we discovered there was no insulation in the attic and those walls I am describing. Each package weights 29 pounds and covers 24.9 square feet so getting it up to the second floor, up the ladder to the attic was the hardest part of the project. The package fit easily through my access doors with me pushing them up the ladder ahead of me. This was by far the hardest part, I did it by my 65 plus old self but I would have LOVED to had help. Cutting was stupid easy, it actually cuts easier than the pink stuff, if you use an cheap electric carving knife. The second hardest part of the project was crawling around in a attic in South Texas (I did this in the middle of the night for that reason). Yes it is itchy, I tried real hard not to have any skin contact but I think while carrying it the fibers worked through the jump suit and shirt, my fore arms were hit the hardest. Results, I can no longer feel heat radiating from the upstairs walls, my dogs and I no longer can hear the kid who lives two doors down playing basketball in his drive. I am sure there will be a huge savings on my electric bill, but the project is too new to give you any numbers.

Pros Easy to Install, Easy to Use, Easy to Work With, High Quality, Lots of Features, Performs Well, Quiet, Seals Well, fire resistant, water resistant, sound deadening Cons itchy, Heavy
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ChiefNerd

South Texas Coastal Bend
65 or over, Male
3 out of 3 people found this helpful
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By: ChiefNerd
  • Great product , Great price easy to use.... ...
  • August 16, 2018

Great product , Great price easy to use.... great delivery was a little more dusty than competitor but was easier to cut and manipulate in tight places

Christopher

2 out of 2 people found this helpful
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By: Christopher
  • Lowering the cost of my electric bills one batt at a time. Yes I would highly recommend R-15 for ...
  • July 16, 2018
  • Recommended Product

Lowering the cost of my electric bills one batt at a time. Yes I would highly recommend R-15 for attic and crawl spaces to eliminate heat and cold from entering your home. 6 thick sheets per bundle is a perfect product for Do It Yourself insulation to be used in attic or walls. 3.5 thickness butts up to the height of the attic beams, 47 inches in length and 15 inches in width. Each package covers 29.4 sq ft. Hiring a company to have insulation blown in was done when the house was built 13 years ago but the room closest to the AC unit is the warmest. The builder had insulation blown all the way to the end of the walls, the easement where air is to flow through and so many areas without any insulation at all are 2 reasons I needed to find a way for my home to be insulated the correct way, the smart way Thermafiber Ultrabatt is not only the right product but so incredibly easy to do your self! R-23 was used for the perimeter . R-15 was used more toward the center of the house, Each sheet is a little short in width but the wool sheeting is very easy to cut with a razor knife. The difference in the temperature in the rooms does not surprise me replacing the solid pieces of mineral wool opposed to the builders pink fluff. Great thermal comfort, Sound Control, 70 percent fire resistant recycled material which controls moisture and prevents mold.

Pros Easy to Install, Easy to Use, Easy to Work With, Economical, Good Shape, Good Size & Weight, Great Value, High Quality, Light Weight, Lots of Features, Performs Well, Quiet, Reliable, Seals Well

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Unique07

The SunshineState
55 to 64, Female
2 out of 2 people found this helpful
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By: Unique07