OOOK guys. Stupid question that I think I already know the answer to but here goes.
Why not the stuff used in walls of a house. There is room to compress it in the roof and side area's. Its R-value is much higher and you can get different R-values.
**Is this the answer? It will Sweat and moisture causes rust?
I personally have never done that but over the past years I have seen some hot rods with it in them. Maybe that was before Dynamat or Reflextix
