Glass wool

fiber glass wool is an insulating material, made from fiber glass, arranged into a texture similar to wool. After the fusion of a mixture of natural sand and recycled glass at 1,450 degree c, the glass that is produced is converted into fibers. It is widely used for thermal and acoustic insulation available in rolls, slabs and high density rigid boards of different sizes & density.
available density : 12kg , 16kg, 24kg, 32kg, 48kg
available thickness : 25mm , 50mm , 75mm
used in shed insulation , roof insulation , cabinet insulation , container insulation , geyser , caserolls etc 
also known as fiber glass wool and it comes with various laminations like
glass wool with aluminium foil
glass wool with gc cloth
glass wool with white tissue
glass wool with bkack tissue
glass wool with nylon cloth etc

Glass wool can be a loose-fill material, blown into attics, or together with an active binder, sprayed on the underside of structures, sheets, and panels that can be used to insulate flat surfaces such as cavity wall insulation, ceiling tiles, curtain walls, and ducting.

Glass wool is an insulating material made from fibres of glass arranged using a binder into a texture similar to wool. The process traps many small pockets of air between the glass, and these small air pockets result in high thermal insulation properties. Glass wool is produced in rolls or in slabs, with different thermal and mechanical properties. It may also be produced as a material that can be sprayed or applied in place, on the surface to be insulated.