Luna flex glasswool/Mineral wool is an insulation blanket used for Sound and Heat insulation. It is wrapped in an aluminium foil and is widely used as a pre-fabricated panel for sound problems like in a house near industrial area and in factories which are having sound problems etc... Glasswool is also a thermal insulation material consisting of intertwined and flexible glass fibers, which causes it to "package" air, resulting in a low density. These air cells are the actual insulator to both heat and sound. For Cavity wall and Drywall Insulation. ... Pipe Insulation. ... Over Purlin Insulation in Commercial Buildings. ... Suspended Ceilings. ... Industrial Roof Insulation. ... Higher Temperature Insulations. ... High Performance and Sound Proofing.