R-21 Thermafiber Fire & Sound Guard Plus Mineral Wool Batts

Owens Corning Thermafiber Fire & Sound Guard Plus delivers R-21 thermal performance with exceptional sound control and fire resistance. These unfaced mineral wool batts fit 2x6 wood-stud walls and are easy to cut and install for interior or exterior applications.

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Key Features:

• Triple Protection: Combines thermal insulation (R-21), sound control, and fire resistance in one product
• Mineral Wool Build: Non-combustible, mold- and moisture-resistant batts for lasting performance
• Easy Fit Install: 5.5 in x 15 in x 47 in batts cut cleanly to fit around boxes, pipes, and irregularities
• Coverage & Pack: 6 batts cover 29.37 sq. ft. for standard 2x6 wood-stud bays
• Versatile Use: Ideal for interior/exterior walls, ceilings, basements, and crawlspaces

Please check the Product Data Sheet Here

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Specifications Table:

Specification	Details
Insulation Type	Mineral Wool Insulation
R-Value	R-21
Form	Batt
Faced or Unfaced	Unfaced
Dimensions (each batt)	5.5 in Thick x 15 in Wide x 47 in Long
Number of Pieces per Bag	6
Coverage per Bag	29.37 sq ft
Compatible Install Surface	Plywood, Wood
Insulation Location	2x6 Wall, Between Walls, Ceiling, Crawlspace, Exterior Wall, Interior Wall
Product Weight	26.92 lb
Pack Size	1
Bag Size	3.91 ft x 15 in x 19 in
Product Length	3.91 ft
Warranty	3-Year Limited Warranty
Features	Fire Resistant, Mold Resistant, Moisture Retardant, Non-corrosive, Soundproofing
Recycled Content	Approximately 70% recycled content (ICC-ES verified)

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Frequently Asked Questions (FAQ):

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

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Q: What wall framing is it designed for?
A: Sized for 2x6 wood-stud walls (5.5 in thick, 15 in wide, 47 in long).

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Q: How much area does one bag cover?
A: Approximately 29.37 sq. ft. per bag (6 pieces).

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Q: Is it fire resistant?
A: Yes, mineral wool is non-combustible and provides fire resistance (per ASTM E136).

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Q: Can I cut it to fit around obstacles?
A: Yes. Use a serrated knife; the batts cut easily for custom fitting.

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Quiet Strength for Smarter, Safer Walls

Thermafiber’s dense mineral wool tucks into your studs like a tailored suit, lending rooms a hushed, cocooned calm. The unfaced, sculptable batts create crisp, flush planes that elevate drywall finishes while delivering robust fire resistance. Pair it with matte black hardware and natural woods for a modern, sound-controlled sanctuary. It’s a discreet essential that underpins a refined, luxury living experience.

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Upgrade your walls with R-21 Thermafiber batts for quieter, safer, and more energy-efficient living—add to cart today.

Warranty

Installation