Sound deadening, Carpet, and floor pan repair questions

Oh lord. I am talking about killmat. Once installed, it's less then 1/8 after it's rolled on. Who would put something thick as 1/2" on their car? That seems counter productive on every level. lol Long winded? Naw, you ain't AJ. LOL

Yep, I agree on the 1/2 inch. Apparently some folks are using it, as mentioned by the op. Maybe they cut it up in pieces and put it only in certain spots like the factory padding on carpet.