Overview
Fireproof rock wool roll mat is an inorganic insulation material produced by melting basalt rock at 1500°C and spinning it into fibers. These fibers are bonded with thermosetting resins and compressed into flexible rolls. Unlike organic insulation, it doesn't combust, making it ideal for high-temperature environments. As a sustainable material, it contains over 70% recycled content. Its unique structure traps air pockets, providing dual functionality as both thermal and acoustic insulation. Major manufacturers produce rolls in widths of 600-1200mm and thicknesses of 50-150mm for diverse applications.
Physical and Chemical Properties
The material exhibits exceptional thermal stability with a continuous service temperature of up to 650°C. Its thermal conductivity ranges between 0.034-0.044 W/(m·K), outperforming many conventional insulations. The random fiber orientation creates millions of tiny air pockets that resist heat transfer. Chemically, rock wool is alkaline (pH ~8), making it resistant to mold and vermin. It maintains dimensional stability even at 95% relative humidity due to hydrophobic additives. The fibers are non-corrosive to metals and compatible with most construction materials.
Main Applications
In commercial construction, it's used behind curtain walls, in cavity walls, and as roof insulation. Industrial applications include insulation for boilers, chimneys, and process piping where fire safety is critical. Marine versions meet IMO FTP Code requirements for ships. The material also serves as fire barriers in ventilation systems and fire-rated partitions. Recent innovations include pre-fabricated composite panels combining rock wool with aluminum facings for quick installation in modular buildings.
Safety and Storage
While non-combustible, installers should wear gloves, goggles, and respirators to prevent temporary skin irritation from loose fibers. Manufacturers apply dust-suppression coatings to minimize airborne particles during handling. Store rolls horizontally on pallets under waterproof covers. Avoid stacking more than 2 meters high to prevent compression damage. Before installation, acclimate rolls to job site conditions for 24 hours to ensure proper dimensional recovery.
B2B Procurement Guide
Specify density (kg/m³) rather than thickness alone, as compression during shipping may temporarily reduce thickness. Request third-party test reports for fire resistance (e.g., BS 476 or ASTM E84), water repellency (EN 1609), and dimensional stability (EN 1604). For large projects, consider factory audits to verify production capacity. Leading suppliers offer just-in-time delivery with customized roll lengths to minimize jobsite waste. MOQs typically start at 500m² for standard products.
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