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)

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Ships within 48 hours · Estimated delivery Aug 16 - Aug 21

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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.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 98167696853

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4.1 ★★★★★
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PPeter
Port Orchard, US
★★★★★ 1
Too large. Correct size not depicted.
SIZE 10-14... Too large. Product details says "Regular" size. Returning.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
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Verified Purchase
Stacey Lovejoy
Louisville, US
★★★★★ 2
Too big
The one size fits all was too big for me.
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Reviewed in the United States on March 10, 2026
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Verified Purchase
Glass
West Palm Beach, US
★★★★★ 5
I stay on your foot they don’t slip in your shoe
Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium
This is the only socks I wear Under Armour because they stay in place I wear a size 8, but they’re more comfortable with a large instead of a medium, but I wear both because I have them already and you can pull them to stretch them out a little bit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
L
Verified Purchase
Lauren
Birmingham, US
★★★★★ 5
Great fit, truly doesn’t slide off heel
Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium, Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium
I’ve scoured all the lands looking for a no-show sock that was 1) thin, 2) quality, soft, breathable material, 3) didn’t dig into my feet/heels, 4) doesn’t shrink, and most importantly 5) stays on the back of my heel without a bulky non-slip rubber piece and these check all the boxes! Perfect for low profile women’s work shoes like Keds, etc. Not low enough for most flats though. I wear a women’s size 9.
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Reviewed in the United States on April 19, 2025
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Elliz
Lake Worth, US
★★★★★ 5
So good - I’m buying MORE.
Number of Items: 3, Color: White (3-pairs), Size: Medium
I’m gonna give you more detail than you need about why I’m buying these socks again. I’ve been the mom of girl athletes. I’ve been a model and a fashion director. I’ve worn every brand of shoe on the planet and never found a shoe that did NOT find a vulnerable spot on my foot to rub raw. Even my beloved white Jack Purcell sneakers. With that said - I don’t like socks. I’ve bought a TON of them in 35+ years.....all major brands. They shift. They lose their shape. They get holes in them and wear out too fast. Not these. I retired this year, and knowing I’d be in sneakers a lot, traveling, sightseeing ...... I bought these 6 months ago and have worn them constantly. I’ve traveled with them. I’ve washed them in hot water and bleach. The socks are like brand new. They are exactly the right cut so as not to be seen in a basic sneaker. The little silicone patch on the heel stays put. Not once have I had to dig down into my shoe and pull the sock back up. The socks have stayed soft and EXACTLY the same as the day they were new. Like I said - I am back to buy them again. Great quality!
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Reviewed in the United States on January 20, 2021

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