Johns Manville (JM) MinWool SAFB Mineral Wool Batt Insulation, Unfaced, R-3.7 (per inch), 3.5 in x 16 in x 48 in, 42.67 sq-ft (MW3516-A)
Regular price $63.12Unfaced mineral wool sound & fire batt insulation
Johns Manville MinWool® Sound Attenuation Fire Batts (SAFB) are unfaced mineral wool batts designed to reduce noise in wall and ceiling cavities while providing outstanding fire resistance. Durable, inorganic construction helps resist mold growth and vermin for long-lasting performance.
Key Features:
- Sound Absorption: Helps improve wall assembly STC ratings by up to 10 dB for quieter rooms.
- Fire Resistance: Melting point exceeds 2000°F, with Flame Spread 0 and Smoke Developed 0.
- Durable Inorganic Mineral Wool: Does not support fungal growth and will not sustain vermin.
- Unfaced Batts for Cavities: Fits standard framing and is suited for interior partitions, exterior walls, and above suspended ceilings.
- Convenient Coverage: One bag covers 42.67 sq-ft for efficient takeoffs and installs.
Specifications Table:
| Specification | Details |
|---|---|
| Product name | MinWool Sound Attenuation Fire Batt (SAFB) |
| Insulation type | Mineral wool batt |
| Facing | Unfaced |
| R-value (per inch) | 3.7 (ASTM C518, value at 75°F) |
| Thickness | 3.5 in |
| Width | 16 in |
| Length | 48 in |
| Coverage area per package | 42.67 sq-ft |
| Pieces per package | 8 pcs |
| Sound control | Improves wall assembly STC ratings by up to 10 dB |
| Fire performance | Melting point >2000°F (1093°C); Flame Spread 0; Smoke Developed 0 |
| Durability | Inorganic; no fungal growth; does not sustain vermin |
Frequently Asked Questions (FAQ):
Q: Where is this mineral wool batt typically used?
A: In metal-stud wall cavities of interior partitions and exterior walls, or above suspended ceiling systems for sound control and fire resistance.
Q: Is this batt faced or unfaced?
A: Unfaced.
Q: What is the R-value?
A: Thermal resistance is R-3.7 per inch of thickness (ASTM C518, value at 75°F).
Q: How much area does one bag cover?
A: 42.67 sq-ft per package.
Q: Does mineral wool resist mold and pests?
A: Yes—its inorganic construction does not support fungal growth and will not sustain vermin.
Silence, Sculpted—Performance Insulation With Quiet Luxury
Think of this mineral wool batt as the unseen layer that makes a space feel impeccably composed—quieter, calmer, and more refined. Its dense, unfaced profile disappears into walls and ceilings while elevating comfort with serious sound absorption and impressive fire resistance. Use it behind feature walls, media rooms, or between living zones to create that hushed, gallery-like atmosphere. It’s the kind of behind-the-scenes essential that turns everyday interiors into truly luxurious living.
Upgrade your walls and ceilings with JM MinWool SAFB for quieter rooms, durable performance, and confident fire resistance.
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