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Rockwool AFB is a mineral wool batt made for interior wall and floor assemblies where sound control and fire resistance matter more than thermal performance. It is noncombustible, chemically inert and dimensionally stable, so it friction-fits into stud cavities and party walls without fasteners. Compared with glass fiber batts, it is denser and heavier, which helps with low-frequency sound and adds mass to a partition, but it costs more and is harder to cut cleanly. It suits builders and renovators soundproofing shared walls, ceilings and mechanical rooms.
In stock
Lowest price we've seen: $744.94 on Nov 7 at Arbor. Tracked across 1 store since Nov 7.
Owners and installers who use AFB for interior partitions report noticeably quieter rooms and easy friction fitting. Complaints center on itchiness during installation and the higher cost than fiberglass.
| Thickness | Coverage |
|---|---|
| 1" | 170.7 Sq Ft |
| 1.5" | 96 Sq Ft |
| 2" | 85.3 Sq Ft |
| 2.5" | 64 Sq Ft |
| 3" | 85.3 Sq Ft |
| 3.5" | 64 Sq Ft |
| 4" | 64 Sq Ft |
| 5" | 42.67 Sq Ft |
| 6" | 42.67 Sq Ft |
Rockwool AFB (Acoustical Fire Batt) is a mineral wool batt insulation designed for wall and floor systems where acoustic performance and fire resistance matter most. It is noncombustible and lightweight, with strong acoustical dampening.
The batts are dimensionally stable, so they friction fit into wall partitions. They suit applications from party walls to plant and manufacturing walls.
The material is chemically inert and non-corrosive. It repels water and does not rot or promote mildew, fungi or bacteria. It is CFC- and HCFC-free and made from natural and recycled materials.
