Hot Rods Spray on heat/sound insulation

Another vote for NOICO. Gene turned me on to it a couple years ago. Used it in my coupe and made a hell of a difference. Took the tinny noise out of the doors when you close them. Got mine from Summit.

 

When I first put my coupe together, I bought some of that stuff with the foil on both sides and the white foam in the center, for it. The stuff required it to be glued in place. I used the 3M spray glue (and fully followed the directions) to glue it to the inside roof of my coupe. Within 2 years the glue was failing (we drove the car with the windows down), and chunks of the foam started dropping off the roof. Then I cleaned the entire underside of the roof, and applied the spray on glue and installed some new foil covered (on both sides) bubble insulation (it was lighter then the foam filled stuff, I ***umed it was the heavier weight of the foam filled that was causing the problem. That too failed, with the glue breaking down in 2 summers.

When I cleaned it all again, I installed a box with 36 square feet of the NOICO .080 stuff to the firewall, under the carpet, and the bottom side of the roof. The NOICO stuff was considerable heavier, I really was not expecting it to last very long! That original application is still there. The next winter I bought another 36 sq ft box of it, and covered all the rest of p***enger and trunk area in the coupe. Inside of the doors is really hard and is probably not covered well, but there are door panels cover the doors. All of that is still there.

In 2018 I had to replace the metal around the rear window. That process required that I remove the NIOCO near the window. I was able to cut an edge remove the part I wanted to remove with a razor s****per. After the new section was welded back in and the area cleaned up, I applied some new NIOCO around the new rear window frame, and it sealed up tightly with a small over lap of the originally installed roof application. There still has not been any indication the NIOCO is letting loose.
The last 2 build have been done since 2018, with the NIOCO. My 48 Dodge truck cab has the complete inside of the cab covered with it (the insides of the doors are not completely covered, too tight to get both hands into most of them). I bought (2) 36 sq ft boxes, still have nearly a full box left over. I'm sold on it.