ROCKWOOL ROXUL Safe® 55 & 65 are stone wool insulation boards for exterior and interior non-load-bearing, steel-faced firewall applications where a fire resistance rating is required. It is approved for use in UL and ULC 1- and 2-hour fire rated systems.

ROXUL Safe 55 & 65 are noncombustible, and will not produce toxic smoke or promote flame spread. ROCKWOOL offers single- or double-sided fire-rated assemblies, and is ideally suited for zero lot line applications where buildings are in close proximity.

• Stable long-term R-values for superior thermal performance.
• Non-combustible 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.