Originally Posted by CreepyCrawler95
i meant to say heat mostly haha sound isnt
I know they sell self adhesive sound insulation. It's foil coated so maybe it does heat as well.
I have seen guys make headliners out of 2" thick foam from home depot. I'm pretty sure it's R-15. You can get like R-10 which is much thinner or R-30 which is thicker but R-15 is more common. It's the pink stuff that comes in sheets, not the real spongy type.
After cutting it and securing it, they used spray adhesive to put a layer of all-weather carpeting on top. You can get the carpeting from Walmart very inexpensively, and that way you won't have a pink interior.