Sound Deadening Material

[custodian]

I am getting ready to put new carpet in my 73. Which sound deadening material would be best, the EVA or Jute with foil backing?

 

[smoothandlow84]

Dynomat....its the best money you can spend. I did 2 layers UNDER the oem rubber/fiber sound deadening.....EXTREMELY quiet and cooler.

 

[theblindchicken]

When I got my truck repainted, i replaced some of the original deadening with jute carpet underlayer. Helped a lot.


Is there enough room to fit dynomat under the headliner?

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[da_raabi]

I used a cheaper alternative called Noico. I used their 50mil foil-backed product on the complete floor and as tiles on the a/b/c pillars. They make an 80mil product as well, and honestly I probably should have used that.

I then layered Noico closed-cell foam over the foil. This acted as a gasketing layer.

I finished up with a layer of mass loaded vinyl. This was the true sound proofing layer, and wow did it ever work. My exhaust is painfully loud and this really helped a lot with in-cab drone etc. The product I used can be ordered online from Home Depot. It is called DB-3. It is by-far the cheapest MLV out there.

Being a crew cab this took a LOT of work, but I think it was ultimately worth it. I just need to do the doors and firewall at some point as I still have a lot of sound/heat coming through them.

Oh - and don't forget to insulate the back cab wall. I noticed the greatest improvement in sound deadening from that, but then the flowmaster super 44s drone real bad so that is probably why.

 

[northeimcustom]

I am just finishing up doing 'Peel and Seal' on the interior of my regular cab. I purchased this at my local Lowe's store. I have read many very good reviews on using this product as a sound deadener. Very easy to install with a 2'' roller and a hair dryer. No asphalt or rubbery smell to it like others have experienced. I went this route vs. Dynamat or Fat mat because it was way cheaper and I didn't want to invest a bunch of money at this time, I have about $60 in it and that's doing the floor, back of cab, and door panels. I haven't gotten it back out on the road yet but I will give you an update once I do!