JM (Johns Manville) MinWool SAFB Sound Attenuation Fire Batt Insulation — R-3.7, 2 in x 16 in x 48 in, Unfaced, 74.66 sq ft
Regular price $57.22JM MinWool SAFB mineral wool sound/fire batt (R-3.7)
JM (Johns Manville) MinWool® Sound Attenuation Fire Batt (SAFB) is an unfaced mineral wool batt designed for noise control in wall and ceiling cavities. It’s noncombustible and moisture-resistant, helping improve assembly sound performance while adding fire resistance.
Key Features:
- Sound Dampening Performance: Absorbs sound and can improve wall assembly STC ratings by up to 10 dB.
- Noncombustible Fire Resistance: Melting point exceeds 2000°F with Flame Spread 0 and Smoke Developed 0.
- Moisture & Mold Defense: Mineral wool resists moisture and does not support fungi growth.
- Flexible Fit for Cavities: Lightweight batts sized for common stud bays and framing applications.
- Unfaced Design: Installs without a facing for use in walls, floors, and ceilings where a vapor retarder isn’t required.
Please check the Product Data Sheet Here
Specifications Table:
| Specification | Details |
|---|---|
| Brand | JM (Johns Manville) |
| Product line | MinWool Sound Attenuation Fire Batt (SAFB) |
| Insulation type | Mineral wool batt insulation |
| Facing type | Unfaced |
| R-value | R-3.7 |
| Thickness | 2 in |
| Width | 16 in |
| Length | 48 in |
| Coverage area | 74.66 sq-ft |
| Color | Beige/Light Yellow/Tan |
| Material | Mineral Wool (inorganic fibers derived from volcanic rock / inorganic fiber) |
| Installation locations | Ceiling, Floor, Wall |
| Designed applications (described) | Metal-stud wall cavities of interior partitions, exterior walls, or above suspended ceiling systems |
| Sound control (described) | Improves wall assembly STC ratings by up to 10 dB |
| Fire performance (described) | Melting point in excess of 2000°F (1093°C) |
| Flame spread (described) | 0 |
| Smoke developed (described) | 0 |
| Resists (listed) | Fire; Fungi; Moisture; Thermal; Vapor |
| Durability (described) | No growth of fungi; does not sustain vermin |
| ASTM C665 | Type I |
| ASTM C518 (Thermal Resistance) | R-value at 75°F; 3.7 per inch of thickness |
| ASTM E84 | Flame Spread 0; Smoke Developed 0 |
| ASTM E970 (Critical Radiant Flux) | > 0.12 W/cm² (0.11 Btu/ft²·s) |
| ASTM C1104 (Water Vapor Sorption) | < 1% by weight; < 0.2% by volume at 120°F (49°C), 95% RH |
| ASTM C1304 (Odor Emission) | Pass |
| ASTM C665 (Corrosiveness) | Pass |
| ASTM C1338 (Fungi Resistance) | Pass |
| ASTM E136 (Combustion Characteristics) | Pass |
Frequently Asked Questions (FAQ):
Q: Where can this batt insulation be installed?
A: It’s listed for installation in ceilings, floors, and walls—commonly used in metal-stud interior partitions, exterior walls, and above suspended ceiling systems.
Q: Is it fire resistant?
A: Yes—it's described as noncombustible with a melting point over 2000°F, and has Flame Spread 0 and Smoke Developed 0.
Q: How much area does one bag cover?
A: This item covers 74.66 sq ft.
Q: What are the batt dimensions and R-value?
A: Each batt is 2 in thick, 16 in wide, 48 in long, with an R-value of R-3.7.
Q: Does it help with sound control?
A: Yes—it's described as improving wall assembly STC ratings by up to 10 dB.
Quiet Luxury, Built Into the Walls
Think of this mineral wool batt as the invisible layer of calm that makes a space feel curated—less echo, more intimacy. Its unfaced, sculptural simplicity disappears into cavities, yet it elevates the experience with serious sound absorption and formidable fire performance. Pair it behind crisp plaster, warm wood paneling, or tailored millwork to create rooms that feel hushed and intentional. It’s the kind of behind-the-scenes essential that quietly defines luxurious living.
Upgrade your walls and ceilings with JM MinWool SAFB to add noticeable sound control and confidence-inspiring fire resistance.
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