Rockwool is an inorganic insulator made from stones or rocks by blowing a jet of steam through molten rock (such as siliceous rock or limestone) or slag. Rockwool wool can withstand temperatures greater than 1,800°F (1,000°C) and does not contribute to the development and spread of fire or the release of toxic gases.
Glass wool Insulation is one of the most widely used forms of insulations world-wide because of its thermal and acoustic properties, light weight, high tensile strength and exceptional resilience. Glass wool consist of fine, long, inorganic fibres bonded together by high temperature binder. These fibres are distributed to trap millions of tiny pockets of air in it thereby creating it an excellent thermal and acoustic insulation.