Very sticky self-adhesive 80 mil automotive butyl and foil sound deadening. It is user-friendly viable material suitable for DIY installation. KILMAT is really efficient and easy-to-install | Now the material is 1,5 times thicker that will get you 1,5 times more effective insulation. The thicker the material the more performance you get | Automotive self-adhesive insulation consists of butyl. KILMAT sound deadening has a total weight of 0.5 pounds/1 square feet. This weight ensures optimum efficiency and sound insulation that could be possibly gained from 80 mil thickness material. KILMAT 80 mil is light weighted sound deadening material | Audio insulation KILMAT has a special indicator as to if it is installed correctly. The special embossing on the foil must be rolled out till it is plain smooth, then you'll be 100% sure that the soundproofing is set correctly and professionally. The sound dampening material comes in handy size sheets which make it easier in terms of cutting and installation process