I have a box of Raammat BXT2 in my garage (37sq ft). This is more than I need for things that I had in mind. Perhaps, I might just sell the leftovers, if there is any, but right now I am wondering if there is any benefit to treating the roof. What do you guys think? In theory, treating the roof should reduce highway noise and increase bass impact. However, these effects are highly dependent by car type. Has anyone here treated their roof yet? Any effect? Is it hard to remove the trim cover from the roof?