Div 07 · Thermal & Moisture Protection
ROCKWOOL AFB
R
Rockwool · AFB
A lightweight semi-rigid stone wool acoustical fire batt friction-fit into steel- or wood-stud cavities to add sound attenuation to rated partitions.
✓ Verified 2026-08-28
Specs on this page were checked against Rockwool AFB steel-stud brochure on 2026-08-28.
Specifications
| Nominal density | 2.5 lb/ft3 |
| Thickness | 1 in to 3-1/2 in in 1/2 in increments, plus 4, 5 and 6 in |
| UL classification code | BZJZ |
Certifications & Standards
ASTM C665
ASTM C553
ASTM C167
ASTM C423
ASTM E84
ASTM E90
ASTM E136
UL 723
Attributes — product claims, not third-party certifications
NoncombustibleFlame Spread Index 0Smoke Developed Index 0Stone wool
Sustainability
No sustainability metrics on file for this product.