Heat/sound insulation mat? I’m

I bought a carpet kit on craigslist that came with a 30 lb roll of like a tar paper that was form cut to the carpet. Not sure who it came from but it was very good at damping road noise inside once I put it in. It sort of formed to the floor once I put it in as it was pliable. The silver stuff you get in rolls at a hardware store thats about 1/4 thick works well under the headliner and Ive seen it in doors but doors get wet inside and it may collect moisture. That tape stuff looks better for that.