Convertible trunk mat/sound deadening

Dana67Dart said

Any sound deadening will help but as Kosmickuda said it's a convertible.

When I drive to car shows I have over the ear head phones on that brings the db down to where I can hear when I arrive.


Now with the top up it is not particularly loud inside to the point I hear all kinds of car noises I don't otherwise. Ignorance is bliss!

:rofl:

The sound deadening does 2 things

1. It stiffins the metal so it can not vibrate like a speaker cone
2. It adds absorption to stop the sound from transmitting so easily.

A third posable benifit, if installed well, is it will keep water off the metal.

I have not seen any testing to prove this. A void could possibly become a spot where cold metal can come in contact with moist air and condense.

Click to expand...

I think the above is accurate. I have a '68 convertible Barracuda. I put dynamat extreme from the front windshield down to the rear trunk divider, and then covered that with the double, foil-sided jute mat on top of that. I seal the seams with that wax paper covered aluminum foil duct tape. I use it to hold down the edges too. I put strips of dynamat inside the doors and under the door panels too.

Make sure you have good seals in the doors and elsewhere too.

The combination of the 2 works very well to block fumes, sound and heat. It is a convertible though, so I didn't put the jute mat in the low spots where water can pool if it gets in. It usually does no matter how well I try and restore the factory seals.

As far as the trunk goes, I won't use factory style rubber mats because they trap water from condensation and leaks resulting in rust eventually. The top boot is just a thin material, so sound passes through it from the trunk area easily. I never hear much from that, and the cabin and door insulation does help. I do have one I can install for car shows etc.