Has anyone installed Dynamat of Fatmat or any of the other products on the underside of their roof (above the headliner)? Does it stay up there long term? Did you prep the roof with any spray glue or anything else? I don't want it falling down 6 months after I install my headliner. I was thinking of just using the Reflectix insulation they sell at Lowes (like bubble rap with a foil coating) on the roof because it is very light weight and would stay glued up for sure. But, Dynamat or a similar product would make for a quieter car. I am trying to make the car quiet for a more enjoyable ride and also insulated so my air conditioning will work better. Any and all ideas appreciated.
Ron
Ron