Sound and thermal deadeners not much recent activity on it here

[77BroncoWag]

Brands good bad prices. looking at doing the entire floor and maybe the hardtop.

 

[73azbronco]

I layered. Price was not a consideration, I used what was available at time, but I know dynamatt was like $75 a box and i sued 6 boxes. dynapad was a roll, used 2 of those

First thick coating of bed liner.
Dynamatt extreme
Dynaliner
dynapad on firewall after using WH firewall liner.

Then ACC expensive custom carpet with real heavy pad. I probably have upwards of 1 inch built up. I have zero heat off my headers and engine. Wife says the bronco is quieter than my rubicon.

 

[Broncobowsher]

I've seen the demo on the dynamat (or some other brand). It is amazing how little is actually needed to do the job. Just a little bit take the ring out of the metal. A little patch on the bottom of a cymbal mutes it to nothing. But every TV show from last decade shows you slather every possible inch with the stuff. The stuff is heavy as well. Looking at OEM applications, they are very strategic with the placement. When i did my cargo van I would take my knuckle and tap on the panel. Did it resonate and have a ring to it? No, just a thud, don't need any. If it did, add a small patch that roughly fit the area. When I was done with the inside of that van it was quieter than the factory passenger version. I only put in one box, maybe 20 pounds, of the stuff, in a full size cargo van. Dynamat loves selling there stuff, of course they recommend 75-100% coverage. Also don't have to think about it, just cover everything. Zero brainpower required. That is just panel resonance.

Sound paths, actually not too many in a Bronco. In cars it often turns out to be underfloor that channels up through the A and B- pillars. The hole for the seatbelt lets that sound exit right at your ear. The panel is not resonating, dynamat won't fix that.

Thermal can have some overlap with acoustic. but not necessarly. Amazing what a basic headliner will do. No insulation, just a headliner. I have a giant roll of thinsulate insulation. Rock wool is pretty good stuff. Polyiso insulating boards are really amazing. But they all add bulk. And generally don't like to be compressed. Basic cotton jute insulation and carpet is amazing at both sound and thermal.

 

[ntsqd]

Black '91 Suburban with the thin foam in the headliner fabric letting go. Front to back seat conversations were strained, best to turn enough to see the person talking from either front seat. Less than ideal if you're the driver.
Pulled the headliner panels and had them re-done by an upholstery shop (truck was a driver, not a project). While the panels were out I decided to apply some Reflectix to the underside of the roof panel, see if that would help with interior temperatures.
Truck has rear A/C, so couldn't do the rear-most section. Applied one layer of Reflectix everywhere else to the roof. With the re-done HL in place it made a noticeable difference in heat and cool, but it made a remarkable difference in sound. Truck was noticeably quieter inside and could have front to back seat conversations without strain. Did not expect that from a mostly thermal insulator.

 

[ba123]

I didn't want to put anything that had an ugly name all over it so tried to find something that was good and mellow looking.

I went with DEI and it's just a clear top and you see the black Butyl through it.

https://www.amazon.com/dp/B079VJP8SZ/?tag=classicbroncos-20

 

[73azbronco]

I had Az to consider, I needed proof it wouldnt turn into a black puddle of goo, dynomat did the job. Also, everything is covered so seeing the name of the noise stuff is moot. I used the stuff for heat more than noise, works great.

 

[PCB 4x4]

We've been using Fat Mat for years. They now have one in black that's really thick and sticky. It's so sticky, we had a roll standing up on our concrete floor, and it took a chunk of concrete out before it would let go

 

[fordguy]

I used both sound and insulation products by lizardskin. i used them on the bottom side and all interior including the hard top. The stuff works. The audio in my cab sounds incredible. What convinced me of how well it works the difference inside the the cab vs outside the cab. I would absolutely use it again. In addition I used sound mat in areas around speakers.

 

[SD66]

Anyone every use a product called Z-mat? our builder recommended putting it all floor, doors, rear quarters and in the top. It's 1 product for thermal & sound.
Not cheap but since we're reupholstering and replacing carpet now's the time.