Door Skin Sound Deadening

[Ronno6]

As I have the windows out of my '84 C-10 in preparation for installing single pane glass, the time is right to apply
sound deadening mat to the inside of the skins.
Is it necessary to cover the entire inner surface as much as possible, or will strips with spaces in between do the trick?

 

[saltdog]

I covered what I could easily get to with a roller using Kilmat 80. It was less than 50% coverage, but did make a big diff. Main challenge will be making sure it sticks to the old door.

 

[Bloodhound1981]

As I have the windows out of my '84 C-10 in preparation for installing single pane glass, the time is right to apply
sound deadening mat to the inside of the skins.
Is it necessary to cover the entire inner surface as much as possible, or will strips with spaces in between do the trick?

I put one square of Kilmat in each door, you definitely don't need a lot to make the tin can noise stop. Strips would probably work well too.

 

[waterpirate]

Same here with 1 big square. Made a huge diff.
Eric

 

[ali_c20]

Same here, cleaning the inside of the door to make the mat stick really sucked.

 

[Randy and Easton]

Agree! Works well

Randy and E

 

[Ronno6]

Thanks, guys.
I had figured that strips would be easier to get thru the holes in the inner door panels.
But, maybe with the windows and regulators out, the mat can be dropped in thru the window openings..........

 

[bucket]

I agree, just a simple square will make a world of difference. It doesn't even need to be a full 12x12 sheet. 8 inches or so works well too.

 

[CalSgt]

Thanks, guys.
I had figured that strips would be easier to get thru the holes in the inner door panels.
But, maybe with the windows and regulators out, the mat can be dropped in thru the window openings..........

I used some stuff that came in a large roll, just lowered it down through the window slot while everything was disassembled.

ETA: Then cut up my arms and hands trying to get in there to roll it out.

Also, supposedly the first 60% of coverage does like 90% of the work, every bit of coverage after that produces a smaller increase in the amount of dampening.

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[Juggernaut]

I used 3M rubberized undercoat in mine. It seems to do pretty well. Anyone had any trouble with the mats trapping water and causing the doors to rust out?

 

[Doppleganger]

Every older 4N car I disassembled for resto, had a random 4" - 10" square of a thicker tar paper for sound deadening in various areas. Only ones that had a more complete coverage of a HEAVY rubber/insulation mats were diesels. I would collect those for my own cars.

Would love to find something like those mats to make fit in my cab. They had to be at least 1/2" thick.

 

[Big Dooley]

I always say more is better. Cover as much as possible for you only want to do it once. I have a trick stereo in my 85’ k30 dually 4x4 and not only want the tin can sound gone but also a sound booth type feeling in the cab so i covered everything but the headliner and wow it is like like being in a real sound booth and the music is crystal clear driving down the road. Also makes the doors feel solid when closing. Also helps to have a warm rig or even summer time to allow the sound strips to really take and i used the Noico brand.

 

[NWSooner]

Merry Christmas!
The folks over at "One Piece Products" reccomend using the roll on bed liner on the inner skin, and then your prefferred brand of sound deadening mat over that for the ultimate in a more sound proof cab. I've done the bed liner (no fun by the way) and will use "KillMat" once my truck gets back from paint.

The Original Designer of Vent Window Delete & Flush Mount Glass

 

[Bennyt]

I used lizard skin (2 coats ceramic/ 2 coats sound) the entire inside and then also the surface under the door panel. Doors are much more solid sounding when closing.

I also put heat shrink on all door rods to prevent rattles.

 

[bucket]

I used lizard skin (2 coats ceramic/ 2 coats sound) the entire inside and then also the surface under the door panel. Doors are much more solid sounding when closing.

I also put heat shrink on all door rods to prevent rattles.

Oh. Heat shrink on the rods is a fantastic idea. That's genius!