Owens Corning R-30 Thermafiber Fire & Sound Guard Plus Mineral Wool Insulation Batt, 7.125" x 15" x 47" (3-Piece, 14.7 sq. ft.)
SKU: 20940422469

Owens Corning R-30 Thermafiber Fire & Sound Guard Plus Mineral Wool Insulation Batt, 7.125" x 15" x 47" (3-Piece, 14.7 sq. ft.)

Sale price$28.90 Regular price$32.11
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Description

Owens Corning R-30 Thermafiber Fire & Sound Guard Plus Mineral Wool Insulation Batt, 7.125" x 15" x 47" (3-Piece, 14.7 sq. ft.)R 30 Thermafiber Fire & Sound Guard Plus Mineral Wool Batt Professional grade mineral wool batts engineered for superior thermal performance, sound control, and fire resistance in interior or exterior wall assemblies. These unfaced R 30 batts fit 2x8 wood studs, are moisture and mold resistant, and are easy to cut for a custom, snug fit. Key Features: High R Value Thermal Performance: R 30 batts help improve energy efficiency without degrading over

R-30 Thermafiber Fire & Sound Guard Plus Mineral Wool Batt

Professional-grade mineral wool batts engineered for superior thermal performance, sound control, and fire resistance in interior or exterior wall assemblies. These unfaced R-30 batts fit 2x8 wood studs, are moisture- and mold-resistant, and are easy to cut for a custom, snug fit.


Key Features:

  • High R-Value Thermal Performance: R-30 batts help improve energy efficiency without degrading over time.
  • Fire and Safety Rated: Non-combustible mineral wool provides fire resistance and is non-corrosive and moisture resistant.
  • Acoustic Control: Dense fibers reduce sound transmission—ideal for bedrooms, baths, and home theaters.
  • Easy, Precise Installation: Unfaced batts cut cleanly with a serrated knife and expand to fill cavities, even around irregularities.
  • Sustainable Composition: Contains approximately 70% recycled content (ICC-ES verified).

Please check the Product Data Sheet Here


Specifications Table:

Specification Details
Insulation Type Mineral Wool Insulation
Roll or Batt Batt
Faced or Unfaced Unfaced
Insulation R-Value R-30
Dimensions (each batt) 7.125 in. thick x 15 in. wide x 47 in. long
Number of Pieces 3
Coverage Area per Bag 14.7 sq. ft.
Compatible Install Surface Plywood, Wood
Insulation Location Ceiling, Floor; Interior & Exterior Walls
Insulation Features Fire Block Rated, Fire Resistant, Moisture Retardant, Mold Resistant, Soundproofing
Product Weight 23.57 lb
Batt/Roll Size 3.91 ft. x 15 in.
Bag Size 3.91 ft. x 15 in. x 19 in.
Warranty 3-Year Limited Warranty
Recycled Content Approximately 70% recycled content (ICC-ES verified)

Frequently Asked Questions (FAQ):

Q: How much area does one bag cover?
A: Each bag contains 3 batts and covers approximately 14.7 sq. ft.


Q: What stud depth does this product fit?
A: Designed for 2x8 wood stud walls; each batt is 7.125 in. thick, 15 in. wide, and 47 in. long.


Q: Is it faced or unfaced?
A: Unfaced mineral wool batts.


Q: Where can I install it?
A: Suitable for interior and exterior walls, ceilings, basement walls, and floors.


Q: Does mineral wool resist mold and moisture?
A: Yes. It is moisture-resistant and tested mold-resistant per ASTM C1338.


Quiet Strength for Elevated Walls

Thermafiber’s dense, sculpted batts bring a refined calm to rooms by taming noise before it reaches your ear. I love the crisp, uniform edges—clean lines that slide into wall cavities and disappear, leaving only performance. Wrap a primary suite or home theater to create a cocoon of serenity, then layer textures and finishes with confidence. It’s a discreet luxury that makes everyday living feel tailored and tranquil.


Upgrade your walls with R-30 Thermafiber performance—add to cart and create a quieter, safer, more efficient home today.

Warranty

Installation

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
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 20940422469

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★★★★★ 4
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Reviewed in the United States on March 17, 2026
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Abby B
New York, US
★★★★★ 5
Surprisingly great for my wide feet and high instep!
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So thrilled I took a chance on these. Finding boots is impossible for me. I have wide feet, a super high instep, a bunion on one foot, and I wear a hard to find size (10.5). I ordered the 10.5 and 11 in these expecting I might need to size up for width (if I could even get them on). It was a struggle getting the 10.5s on the first time, and once I did they were somewhat uncomfortable on the top of my left foot. But I read that they would relax so decided to give it a go because I need waterproof boots for an upcoming trip and the 11s felt too long. After two days of light wear, they are already breaking in and I have no more discomfort. Getting them on is already easier and they are plenty wide enough and very comfortable to walk in. These are true to size. Super happy and worth a day of mild discomfort to break them in!
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Reviewed in the United States on March 7, 2026
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EE
Phoenix, US
★★★★★ 5
Comfortable, sturdy, waterproof
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Loce, love, love these boots. Have walked ten miles with no foot pain around NYC. They go with everything and and are so comfortable. As they are waterproof/resistant, they get a little warm in high temps, but perfect three-season boots.
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Reviewed in the United States on May 17, 2026
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Kate
Battle Creek, US
★★★★★ 5
Super cute, comfortable, practical, love that they are slip on
Size: 10.5, Color: Tobacco/Black
I have worn these 2-3 times already. The first day was a school/work day so I was on my feet 9 hours and the only issue I had was with the side of the boot rubbing against my ankle. I just make sure I wear socks high enough to cover my ankles or jeans that go into the boots now for long wear days. Absolutely love them! They keep my feet dry in this snow( we live in Michigan). I had been looking for a pair like this for awhile now and was getting super frustrated that I couldn't find my size in any that I liked. I saw that they had these available in a 10.5 and I wear 11. I looked at the Sorel website reviews (since the amazon ones weren't super helpful on sizing) and they said that the boots ran big so I took a chance on the 10.5 fitting me. They fit perfect. I have long narrow feet but I could see where they would be tight or uncomfortable on someone with wider feet. I've been trying to find a pair for my mom now since she has boot envy.
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Reviewed in the United States on January 27, 2026
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Nicholle King
Waukegan, US
★★★★★ 5
Worth it.
Size: 8.5, Color: Crushed Clay/Gum 2
Love all my Sorels. These were really cute, good color, comfortable, warm, fit well, good quality and sturdy. I would order again.
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