Div 07 · Thermal & Moisture Protection
ROCKWOOL ROXUL Safe
R
Rockwool · ROXUL Safe
A semi-rigid stone wool firestopping insulation used as safing and fire blocking to close gaps and voids in fire-rated construction.
✓ Verified 2026-08-28
Specs on this page were checked against Rockwool ROXUL Safe technical data sheet on 2026-08-28.
Specifications
| Minimum density | 4.0 lb/ft3 |
| Thickness | 1-1/2, 2, 3, 4, 5 and 6 in |
| Board size | 24 in x 48 in |
Certifications & Standards
ASTM C612
ASTM C303
ASTM C665
ASTM E84
ASTM E136
ASTM E814
ASTM E2307
ASTM E119
UL 723
UL 1479
UL 2079
Attributes — product claims, not third-party certifications
NoncombustibleFlame Spread Index 0Smoke Developed Index 0Stone wool
Sustainability
No sustainability metrics on file for this product.