It mainly used in the thermal insulation of air-conditioning ducts, has coarse fibers. Isover has pink glass wool roll mats. Black soft cotton is rubber and plastic. Rock wool is generally dark and the glass wool is golden.
It has advantages of good sound-absorbing , welding and thermal insulation performance, small bulk density, chemical stability, corrosion resistance, and belongs to glass in terms of chemical composition. It is an man-made inorganic fiber, cotton-like material. Glass wool belongs to glass fiber with low thermal conductivity which is a mineral wool. Rock wool is also known as asbestos. Glass wool fiberizes molten glass.
