CHEVY SILVERADO 2500HD

DIY sound deadening of CHEVY SILVERADO 2500HD
Area of sound deadening: floor, backwall
Approximate quantity of used material:
1 box of Kilmat 80 mil 36 sqft and 1 box of Kilmat 80 mil 18 sqft
or 1 boxes of Kilmat 50 mil 50 sqft