2008 Yaris sedan ‘S’ sound deadening project.

[talnlnky]

Generally you want to cover as much as possible, add as much weight as you can do the panels. However...

for those on a budget you can maximize the limited material you do have and instead of carpeting all the metal with the stuff just cover say 40-50% of each flat panel of metal with some of the mat. The are diminishing returns after that. With that said, I went 3 layers deep where the rear passengers feet rest... most places I have 1-2 layers tho. IN the future I intend to put about 30sq feet on my front two doors, and another 30ft on my firewall.