SKU: 98167696853

Owens Corning Thermafiber UltraBatt R-15 Mineral Wool Insulation, 3.5 in x 15 in x 47 in (8 Batts, 39.2 sq ft)

Sale price$24.49 Regular price$27.21
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Ships within 48 hours · Estimated delivery Jul 12 - Jul 17

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Description

Owens Corning Thermafiber UltraBatt R-15 Mineral Wool Insulation, 3.5 in x 15 in x 47 in (8 Batts, 39.2 sq ft)Thermafiber UltraBatt R 15 Mineral Wool Wall Insulation Professional grade mineral wool batts engineered for 2x4 walls deliver R 15 thermal performance with fire and mold resistance. Semi rigid batts are easy to cut and fit around irregularities, providing 39. 2 sq ft of coverage per package for interior or exterior stud walls. Key Features: R 15 Performance: Ideal for 2x4 wood stud walls to boost thermal comfort and energy savings Mineral Wool

Thermafiber UltraBatt R-15 Mineral Wool Wall Insulation

Professional-grade mineral wool batts engineered for 2x4 walls deliver R-15 thermal performance with fire and mold resistance. Semi-rigid batts are easy to cut and fit around irregularities, providing 39.2 sq ft of coverage per package for interior or exterior stud walls.


Key Features:

  • R-15 Performance: Ideal for 2x4 wood-stud walls to boost thermal comfort and energy savings
  • Mineral Wool Construction: Fire resistant, moisture and mold resistant, and non-corrosive
  • Easy to Install: Semi-rigid batts cut cleanly and friction-fit around pipes, wires, and odd spaces
  • Unfaced Design: No vapor retarder, suitable where vapor control is handled separately
  • Package Coverage: 3.5 in thick x 15 in wide x 47 in long; 8 pieces covering 39.2 sq ft

Specifications Table:

Specification Details
Insulation Type Mineral wool batt
R-Value R-15
Dimensions (each batt) 3.5 in thick x 15 in wide x 47 in long
Pieces per Pack 8
Coverage Area 39.20 sq ft per package
Facing Unfaced (no vapor retarder)
Application Interior and exterior 2x4 wood-stud walls
Fire Resistance Non-combustible; provides fire resistance
Mold/Moisture Resistance Moisture- and mold-resistant
Cut/Install Semi-rigid; easy to cut and friction-fit
Brand Owens Corning Thermafiber UltraBatt

Frequently Asked Questions (FAQ):

Q: Is this insulation faced or unfaced?
A: Unfaced; it does not include a vapor retarder.


Q: What wall framing is it designed for?
A: Sized for 2x4 wood-stud walls at 16 in on center (15 in cavity width).


Q: How many batts are in a package and what area do they cover?
A: 8 batts per package covering 39.2 square feet.


Q: Can it help with fire and mold resistance?
A: Yes. Mineral wool is non-combustible, fire resistant, and resistant to moisture and mold.


Q: Is it easy to cut and fit?
A: Yes. The semi-rigid batts cut easily and friction-fit into stud cavities, including around obstructions.


Sculpted Warmth with Quiet Confidence

Thermafiber UltraBatt slips into the wall like a tailored suit, bringing a serene hush and cocooning warmth to modern living. Its mineral wool texture adds a refined, architectural rigor—crafted for precision and performance. Use it to elevate bedrooms or media rooms where calm is a luxury, pairing with crisp drywall and natural woods for an effortless finish. Consider it the invisible layer of indulgence that makes a home feel truly composed.


Upgrade your walls with UltraBatt R-15 today and enjoy quieter, more comfortable rooms with lasting energy savings.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 98167696853

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Garfield S
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★★★★★ 5
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Color: Black, White, Light Gray, Size: 3X-Large
I picked this up looking for something simple but clean, and it delivered. The fit is comfortable, the material feels solid, and it looks good without needing much effort. It’s one of those pieces you can throw on and still look put together.
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Reviewed in the United States on March 29, 2026
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Rob75432
Lake Worth, US
★★★★★ 4
Good value, soft and comfortable
Color: Black, Army Green, Light Gray, Size: 4X-Large, Color: Black, Army Green, Light Gray, Size: 4X-Large
Initial thoughts are very positive with this 3 pack shirt set. The green is similar to an OD military green and the black and gray are standard color shades. Material is soft and sizes are true to size. The mock turtleneck isn’t too tight but may still be a little annoying to some people. I do question the amount of spandex in these shirts. Tag says 5% but these shirts are extremely stretchy and feels like a higher spandex content. It’s also a little tough to figure out which way is the front of the shirt. Visually rhe front does have a lower collar line than the back but would still be nice to have a brand tag printed in the back of the shirt for quicker identification. Overall for roughly $12 a shirt these are a good choice for everyday wear. I will update rating if these shirts fail to meet expectations after further use.
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Reviewed in the United States on April 8, 2025
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Eliot
Belleville, US
★★★★★ 5
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Color: Black, Army Green, Light Gray, Size: 5X-Large
Weirdly thick material, I wasn’t a fan but it’s a good sleep shirt
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Reviewed in the United States on May 28, 2026
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Dr. DeeJaye
San Leandro, US
★★★★★ 5
Just what I wanted.
Color: Black, Navy Blue, Wine Red, Size: 5X-Large
These may have just become my standard shirt to wear. Feels good whether tucked or out. Drapes well and fits well. So far, I can see it adjust to the different undershirt I may wear. Will probably order another set in other colors and a back up set of the basics because they will get worn a lot.
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Reviewed in the United States on July 17, 2025
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Chloe
Boise, US
★★★★★ 3
Its alright
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