Rockloyd Slabs & Rolls are specifically designed keeping in view the needs of Building Insulation. The product details are as follows:   Material Constituents - Fibres of Fe2O3 and SiO2 mineral bonded with phenol formaldehyde. Raw Material - Selected rocks containing silica and iron. Manufacturing Process - Rocks are melted at 1600°C in metal lined furnace and drawn into fine fibred of 3-5 microns dia by centrifugal fabrication. Fiber coated with binder is laid in felt form and the felt is compressed and cured into slabs. Processes are optimized to meet commercial density required in industry. Stability - Stable up to 800°C since constituents are melted at high temperature all constituents are stabilized to their utmost extent rendering them passive t