THERMAFIBER Fire & Sound Guard Plus R-21 Unfaced Mineral Wool Batt Insulation (15 in x 47 in), 29.37 sq-ft
Regular price $78.07R-21 Unfaced Mineral Wool Batt Insulation (15 in x 47 in)
THERMAFIBER® Fire & Sound Guard® Plus mineral wool batts deliver R-21 thermal performance with added sound absorption and non-combustible fire resistance. Designed for wood-stud construction, the unfaced 15 in x 47 in batts fit common cavities in walls, floors, ceilings, basements, and crawl spaces while resisting moisture and mold.
Key Features:
- Fire-Resistant Mineral Wool: Non-combustible batt insulation designed to help improve fire performance in residential and light commercial assemblies.
- Sound & Noise Control: Mineral wool structure provides exceptional sound absorption for quieter interior spaces.
- Moisture & Mold Resistance: Resists moisture and mold to support long-term performance in challenging areas like basements and crawl spaces.
- Easy Friction-Fit Installation: Unfaced batts are easy to cut and fit in standard wood-stud cavities.
- Versatile Applications: Suitable for interior/exterior walls, floors, and ceilings in wood-stud frame construction.
Please check the Product Data Sheet Here
Specifications Table:
| Specification | Details |
|---|---|
| Product name | R-21, 15 in x 47 in, Unfaced, Mineral Wool Batt Insulation, 29.37 sq-ft |
| Brand | THERMAFIBER® |
| Series/Line | Fire & Sound Guard® Plus |
| Category | Batt Insulation |
| Material | Mineral Wool |
| R-Value | R-21 |
| Facing type | Unfaced |
| Width | 15 in |
| Length | 47 in |
| Thickness | 5-1/2 in |
| Coverage area | 29.37 sq-ft |
| Application/Installation locations | Basement; Ceiling; Floor; Wall; Interior and exterior wall applications |
| Construction type | Wood stud frame construction |
| Resists | Fire; Fungi; Moisture; Mold |
| Proposition 65 warning | California Residents: Proposition 65 Warning www.P65Warnings.ca.gov |
Frequently Asked Questions (FAQ):
Q: Is this batt faced or unfaced?
A: It is unfaced mineral wool batt insulation.
Q: Where can this insulation be installed?
A: It’s listed for basement, ceiling, floor, and wall installations, including interior and exterior wall applications.
Q: What is the R-value and thickness?
A: It is R-21 and 5-1/2 in thick.
Q: What size cavities does it fit?
A: The batts are 15 in wide x 47 in long for typical wood-stud framing applications.
Q: What does it resist?
A: It resists fire, fungi, moisture, and mold.
Quiet Luxury, Built Into the Walls
True luxury is as much about what you don’t hear as what you do. These THERMAFIBER® Fire & Sound Guard® Plus mineral wool batts slip behind the scenes to elevate comfort—layering R-21 warmth with a hush of sound absorption and the confidence of non-combustible performance. Use them to refine bedrooms, media rooms, and shared walls where serenity matters most. It’s the kind of invisible upgrade that makes a home feel effortlessly elevated.
Upgrade your walls with THERMAFIBER® R-21 mineral wool batts for comfort, quiet, and fire-resistant performance in one easy-to-fit insulation.
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