It has poor insualtion property but good firepoof property. Rock wool insualtion board is recommended.
It has poor insulation than polystyrene but good fireproof property.
Glass wool thermal conductivity coeffieciency is 0.043. rock wool is 0.041 with better thermal insualtion. Since the insualtion and fireproof properties of the rock wool are better than the glasswool, rock wool is more expensive. rock wool is operated at construction site while glass wool is directly operated in the production line.
