Back to all vehicles
Back to all Cristobal 3
We have been very happy to have sound-proofed our truck cabin, as it has made a big difference in our driving experience: less fatigue, and more enjoyable conversations!
Click on pictures to enlarge them.
I chose two products sourced from Canada (there was a more expensive US competitor):
- thin tar/metal sheets (about 3 mm thick) for the doors, back of the cabin and bottom area (behind the pedals) as well as the "ceiling"
- thick foam (about 20 mm thick) for the floor.
The principle of sound-proofing is to add mass (weight) in order to filter and thus dampen high frequency vibrations of metal panels. For the floor, in addition to mass, some foams can absorb medium to lower vibrations.
Most of the work actually involves taking down and remounting the trimmings! It is a good idea to have on hand a few spare plastic nails…
The total work time, including some dusting and cleaning (second hand vehicle) was about 12 hours.
A wood board and two saw horses make a very handy working space for cutting the tar/metal sheets.
It is not necessary to cover the whole flat panels, which would mean cutting complex shapes. In fact, roughly shaped pieces with about 25 mm (1") margin from the sides of the metal parts worked well for us.
I took down the window regulator and kept the window up with two red suction cups, in order to access the door panel from the inside.
BTW, a large panel can be worked with two or more smaller pieces, which are easier to handle than a bigger piece of tar/metal sheet.
Shears are useful as long as there is a strong spring to keep them open (the gooey "tar" layer is very sticky). Most of the time, I used a utility knife over a wooden board.