AFB®
ROCKWOOL AFB® is a stone wool batt insulation for interior partitions in commercial construction. AFB provides the best mix of fire resistance, sound absorption, and durability an insulation has to offer.
1/2
Popular applications
- Interior insulation
- Acoustic insulation
- Fire protection insulation
- Partition wall insulation
- Interior floor insulation
- Interior ceiling insulation
About this product
ROCKWOOL AFB® is a stone wool acoustical fire batt insulation designed for interior steel stud partitions. AFB is noncombustible and resists fire while absorbing sound to protect and soundproof your space.
AFB contributes to enhanced acoustical control and fire protection through numerous third-party fire- and acoustic-rated wall and floor-ceiling assemblies.
Made from stone, AFB provides the optimal balance of rigidity and flexibility, helping to make installations easy, fast, and efficient.
- Noncombustible and fire resistant
- Excellent acoustic performance
- Easily cut with a serrated knife
- Snug fit between steel studs at varying widths
- Inorganic, does not promote mold growth
- Water and moisture repellent
Why use stone wool insulation
- Stone wool provides excellent noise reduction and sound absorption to help you create quieter, more productive environments.
- Noncombustible and fire resistant, stone wool works to contain a fire and prevent its spread.
- Water resistant, stone wool does not rot or promote the growth of mildew, fungi or mold.
- Stone wool batts are lightweight and easy to install.
- AFB and AFB evo have been USDA certified Biobased, obtaining the USDA BioPreferred Certification.
Applications
- Interior partition wall insulation
- Interior framed floor and ceiling assemblies
- Designed for steel stud commercial construction
Product certificates
Declare
UL GREENGUARD Gold Certified
UL Classified - CA/USA
USDA BioPreferred Program - 25%
AFB® sizes, dimensions & packaging
Find AFB® thickness, width, length and pack quantities—everything you need for accurate specification and ordering.
- All
- 1
- 1.5
- 2
- 2.5
- 3
- 3.5
- 4
- 5
- 6
- All
- 16
- 24
Specifications & testing
Explore AFB® specifications and test results, based on relevant industry standards.
| Name | Value | Test standard |
|---|---|---|
| Mineral Fiber Thermal Insulation for Buildings | Type 1 Compliant | CAN/ULC S702 |
| Mineral Fiber Blanket Thermal Insulation | Type 1 Compliant | ASTM C665 |
| Mineral Fiber Blanket Thermal Insulation | Type 7 Compliant | ASTM C553 |
| Smoke Developed Index | 0 | ASTM E84 |
| Combustibility of Materials at 750 °C | Non-combustible | ASTM E136 |
| Determination of Non Combustibility of Building Materials | Non-combustible | CAN/ULC S114 |
| Corrosion of Steel | Passed | ASTM C665 |
| Density description | Nominal density greater than 2.5 lbs/ft3 (40 kg/m3) |
AFB® technical documents & resources
Download AFB® technical documents and resources, including the product data sheet, to support accurate specification and efficient project planning.
AFB acoustical fire batt insulation - US Data sheet
ROCKWOOL AFB® is a lightweight, acoustical fire batt stone wool insulation specifically designed for steel stud and wood stud interior wall and floor applications. Its superior sound absorbency and fire protection contribute to the overall comfort and safety of occupants
AFB acoustical fire batt insulation - CA Data sheet
ROCKWOOL AFB® is a lightweight, acoustical fire batt stone wool insulation specifically designed for steel stud interior wall and floor applications.
AFB evo formaldehyde-free acoustical fire batt - Data sheet
ROCKWOOL AFB® evo is a lightweight, acoustical fire batt stone wool insulation for steel stud interior wall and floor/ceiling applications.
ROCKWOOL AFB features and benefits fact sheet - usa
ROCKWOOL AFB is stone wool insulation for commercial interiors, suited for steel and wood studs, boosting performance.
ROCKWOOL AFB features and benefits fact sheet - canada
ROCKWOOL AFB is stone wool insulation for commercial interiors, available for steel studs, enhancing project performance.
Related products
Explore more stone wool insulation solutions for similar applications.
Roof
Comfortbatt®
ROCKWOOL Comfortbatt® is a stone wool batt insulation designed for thermal performance in exterior wall cavities, exposed floors, basements/crawlspaces and attic applications in both wood and steel framing.
Interior floor
Safe'n'Sound®
ROCKWOOL Safe'n'Sound® is a stone wool batt insulation designed for superior fire resistance and acoustic performance in interior wall cavities, floors and ceilings in both wood and steel frame construction.
Attend a ROCKonnect Masterclass
Earn CEUs and gain expert insights into high-performance building envelope design—all in a live virtual format built for commercial building professionals. Learn from award-winning experts and apply real-world solutions to your next project.