United Insulation® Metal Building Roofing Insulation blanket are an ideal solution for thermal and acoustic insulation of both residential and commercial roofs. The glass wool has a large number of tiny air voids, to play the good role of thermal insulation, sound absorbing, corrosion resistance, stable chemical performance. There are many different laminated insulation facing can be used according to requirements. Both of faced and un-faced glass wool blanket are the best material for metal building insulation applications.