Hey folks. As many of you know the best sound attenuation gear around is Dynamat. But it is also very expensive. After doing quite a bit of research of products including liquid membranes and the like I settled on using Wavebar 4kg/m2. http://www.pyroteknc.com/wavebar-original-light-flexible-mass-loaded-noise-barrier.html I got a 10m (by 1500mm) roll for $300 which I think is good and allows 2 layers on the floors and over the engine bay. But it does not come with a sticky side and I wanted to ask opinions of what glue to use to stick it to the door panels and roof skin. (worst case I can do floors and walls in it and buy some dynamat for the roof). I want something that will instantly hold so I can get it to stick but will also stand the test of time. I sikaflex the way to go? Or contact? Or something else. It will be subject to very hot temperatures of course from the sun too which is a factor. The other thing is if I am ruining my paint my glueing onto it. Should I also rust bullet the panels to get stuff stuck on at the same time so moisture is never an issue? Thanks folks.