A rock wool (or stone wool )panel is a building material made of two metal sheets with a core of rock wool insulation. The panels are used for industrial facades, room separation, and more. 

How it's made 

• Basalt, a volcanic rock, is heated to melt it
• The molten rock is spun into fibers
• The fibers are bound together to form insulating blocks
• The blocks are sandwiched between two metal sheets

Benefits

• Fire resistance: Rock wool's fire rating is Class A1, and it can withstand temperatures over 1000°C 
• Insulation: Rock wool's thermal conductivity is 0.035W/mK, making it a good insulator 
• Sound insulation: Rock wool can reduce noise transmission 
• Water resistance: Rock wool sandwich panels are water resistant after installation 
• Environmental protection: Rock wool helps reduce the environmental footprint of new buildings 

Applications industrial facilities, public buildings, roof insulation, acoustic ceilings, and external cladding systems.