Glass wool is a form of fiberglass where very thin strands of fiberglass are arranged in to a spongy texture similar to steel wool. Glasswool offers very good fire-resistance properties as a thermal insulation material and is also widely used as an absorbent material in acoustic treatments. Its light weight, flexibility and elasticity make it easy to install. The cohesion and mechanical strength of the product is obtained by the presence of a binder that “ cements” the fibers together.