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DynaMat, has anyone done it?

Discussion in 'Ask An Owner Operator' started by LoneRanger, Mar 27, 2022.

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Brettj3876 Road Train Member

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Rideandrepair said: ↑

I just bought some for the floor. It supposed to cut down noise transference vibration. It’s butyl rubber, same rubber used for inner tubes. A second closed cell sound and heat absorbing mat on top of it is suggested. There’s also combo all in one mats. Second skin has one. I used the Siless brand. It’s a lot less money. has another 50mil deadening on bottom, along with absorbing foam, and a strong top layer. Still cost over $200 to do the whole floor. The top mat is similar to a neoprene foam mat. Looks to be the same as original floor mat, only thinner. Depending on how much space is available. A thin layer of thick mass butyl rubber for vibration, and the thickest closed foam rubber, like neoprene would work best. Thicker the better. Other options are lightweight and much cheaper double sided foil mats. Some are just bubble or double bubble wrap. Others are more durable. A combination of butyl deadener, foil in layers and thick foam might be best for walls. Might as well consider heat/cold insulation factors as well. Get the benefits of both.
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We put some some of that rubber mat type material over the insulation and then carpet on top. So 3 layers total. It really cut down the noise

Brettj3876, Mar 27, 2022

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Rideandrepair Road Train Member

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Brettj3876 said: ↑

We put some some of that rubber mat type material over the insulation and then carpet on top. So 3 layers total. It really cut down the noise
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I did layers of rubber and underlayment to get my floor level then put the original mat over everything. That was 13 yrs ago. Eliminated the juke. Added new carpet. The problem with that is condensation between layers, and on the floor, when I pull the mat up. Hopefully by sticking it down, no chance of moisture.

Rideandrepair, Mar 27, 2022

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LoneRanger Road Train Member

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Apu got new motor mounts, new oem muffler. Now going to get new a/c compressor, and a condenser fan.

issue starts when the A/C kicks on. The the back of the cab where the condenser is attached rattles, so insulation needs to be added for sure. But before I do that I want to replace the compressor and fan and see if the issue is fixed.

At idle when it kicks on to charge batteries I don’t mind it.

Last edited: Mar 27, 2022

LoneRanger, Mar 27, 2022

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Last Call Road Train Member

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Axl99 said: ↑

It's is a big project to do it right you pretty much strip the whole cab and sleeper we had about a week into it when we restored a Peterbilt 359. It turn out great for quiet but I would not do it to my 389
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This ^^^^^ exactly what he said .. I've done 3 trucks trust me it's alot easier when your gutting the interior to begin with... I would probably never do a truck just for the noise suppression.. because it alot of work... but if your going to do it this stuff works just as good as the DyanMat and it's cheaper and alittle easier to work with

Last Call, Mar 27, 2022

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Isolate the condenser from the back of the cab.

Old Man, Mar 27, 2022

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staceydude Road Train Member

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I did Killmat on floor and some on the doors of my 379, definitely makes a difference. However if you really want to see a difference you’d have to do the whole thing. If I ever redo the interior of mine I’ll do everything.

I have a K9 insert in my F350 all aluminum and it was loud and I used Dynamat on that. Helped a tremendous amount. This was before I knew about the other brands. I could have saved some money.

youtube some reviews on different brands. You find good and bad and I think you’ll see Dynamat is expensive and not much if at all better.

staceydude, Mar 27, 2022

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Old Man said: ↑

Isolate the condenser from the back of the cab.
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Some mat on the inside of the APU cover maybe. Amazon has all the different brands. They even have an Amazon Brand. It’s 120 mil thick and priced well,

Last edited: Mar 27, 2022

Rideandrepair, Mar 27, 2022

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Wear gloves, that foil backing will make you bleed

Old Man, Mar 27, 2022

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It’s in Spanish but you will understand by just looking.

Dadetrucking305, Mar 27, 2022

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Old Man said: ↑

Isolate the condenser from the back of the cab.
Click to expand...

didnt think about this. Can you expand on your answer?

you mean by putting Dynamat type material between the housing and cab?

LoneRanger, Mar 27, 2022

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