Hey everybody, I'm redoing my headliner and using a different material i found at joann fabric, my question is do i need to put foam in between the headliner board and the material or just glue the material to the board, it seems the only sheets of foam i can find is 1/2 " thick and that seems to thick for the headliner? Does anybody have any suggestions, i think it would look better with some kind of foam behind it but i just don't know what to use?