It's always bigger than what you initially find. Always.
Sound deadening, Carpet, and floor pan repair questions
- Thread starter chinze57
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It's always bigger than what you initially find. Always.
Are you talking about the Dynamat or the Dynapad?
I agree that the Dynamat type stuff is probably not much of an issue on heat retention, as it is not that thick.
I was talking about using the Dynapad. That is about 1/2 inch thick and weighs about a pound a square foot. There is a lot of thermal mass there.
Sometimes in my long winded dissertations I tend to obscure or miss the point....
Oh lord. I am talking about killmat. Once installed, it's less then 1/8 after it's rolled on. Who would put something thick as 1/2" on their car? That seems counter productive on every level. lol Long winded? Naw, you ain't AJ. LOL
Yep, I agree on the 1/2 inch. Apparently some folks are using it, as mentioned by the op. Maybe they cut it up in pieces and put it only in certain spots like the factory padding on carpet.
If it has the metal foil on it like most, THAT would be good to go on the underside of the car. .....even still it's too thick and heavy "for me". The dang killmat is heavy enough.
chinze57
Push Button tranny and a Slant 6 that'll never die
Yes I was talking about the dynapad. The idea is to put down the butyl sound later with foil (dynamat or kilmat or similar) over as much or as little of the car as you want. I’m planning on doing as close to 100% coverage in the cabin as possible. Underside of the dash, floor pans, doors, kick panels, firewall, package tray, roof; as well as most of the trunk (sides, spare tire compartment, deck lid, wheel wells.
Those thin 80 mil sheets are advertised to Insulate some, but primarily be a sound barrier, so they suggest you put something else to do more actual insulation. Noico makes Noico Red, which is 150 mils thick, but is not dense. They advertise it for the deck lid and trunk, as well roof, and firewall. Someplace where it won’t get mushed around (like under your feet). Then Dynamat makes Dynapad which comes in thicknesses of: 1/8”, 1/4”, and 1/2”. It’s dense and is supposed to be used in the same places as Noico Red, but also under carpet. I was considering doing kilmat everywhere, and then Dynapad in 1/8” under the carpet where your feet sit and on the firewall and roof.
But that’s just a theory. Kilmat is cheap so I can easily do 100% coverage. But Dynapad is significantly more expensive, so I will not do nearly 100% coverage. I don’t plan on adding jute under the carpet if I add another layer of insulator/sound deadening.
Very interested to see how this turns out. Keep us posted.
I did put something else. Carpet. That's insulation enough. LOL
Krooser
Building Chinese Free Engines since 1959...
I got lucky and found some commercial generator insulation at a swap meet. It has one side with a heavy foil covering.
It's a black foam type of product.
A 5x10 sheet was $20.00. I used it in the sleeper on my 379 Peterbilt...worked great.
It's a black foam type of product.
A 5x10 sheet was $20.00. I used it in the sleeper on my 379 Peterbilt...worked great.
Derrick Kidwell
Well-Known Member
I used nicotine also good price quality product got it from Amazon, do a search there's a good article comparing different brands
ScattyBaby!!!
Still wet behind the gears
I was going to try this stuff on my build. This was the first alternative I ever heard to dynamat years ago.
E/O 12 in. x 15 ft. Self-Stick Foam/Foil Duct Insulation-FV516 - The Home Depot
E/O 12 in. x 15 ft. Self-Stick Foam/Foil Duct Insulation-FV516 - The Home Depot
bbab3
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On my Barracuda I used Kilmat, and UltraTouch denim insulation from Home Depot. The denim insulation is about 1/2" thick a has a foil side and is glued over the Kilmat then all seams and edges are then taped with foil hvac tape. Works well. I first seen it used in light aircraft.
Aircraft Spruce & Specialty Company sells a version of the UltraTouch with foil on both sides.
Aircraft Spruce & Specialty Company sells a version of the UltraTouch with foil on both sides.
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dodgedifferent2
Well-Known Member
I started with lizard skin and I dont think it did a damn thing, but I had the interior out.
I used Noico 80mm on top of the lizard skin.
I went inside doors over wheel wells etc. I would say I have 90% coverage. If I remember right I used 4 boxes in my 67 dart.
I even made a steel trunk divider and put the noico stuff on both sides of that.
It did quiet it down a bit but it's still loud.
I run tti x pipe with the dynomax super turbo. I have debated getting quieter mufflers (must be getting old)
I used Noico 80mm on top of the lizard skin.
I went inside doors over wheel wells etc. I would say I have 90% coverage. If I remember right I used 4 boxes in my 67 dart.
I even made a steel trunk divider and put the noico stuff on both sides of that.
It did quiet it down a bit but it's still loud.
I run tti x pipe with the dynomax super turbo. I have debated getting quieter mufflers (must be getting old)
chinze57
Push Button tranny and a Slant 6 that'll never die
Interesting. Comparable insulators to Dynapad seem to be from the HVAC world. I’ll stop by Home Depot or a local store and see what I can find. At something like $80 for 10sq.ft, Dynapad isn’t attractive. If I can find a foil backed product specifically to keep out heat, without being too thick or crushable, that would be ideal. I want it for the firewall and the floorpans so your feet stay nice and cool, and so A/C doesn’t have to work as hard.
I’ll get some Kilmat ordered pretty soon probably and start shopping around at hardware stores for an insulator. Thanks for everyone’s input. I’ll update this thread.
PS. It might take me a bit to get around to any install. My estranged mother passed away from covid yesterday and it hit me pretty hard. Have lots of arrangements to make for her.
I’ll get some Kilmat ordered pretty soon probably and start shopping around at hardware stores for an insulator. Thanks for everyone’s input. I’ll update this thread.
PS. It might take me a bit to get around to any install. My estranged mother passed away from covid yesterday and it hit me pretty hard. Have lots of arrangements to make for her.
hwd2
Well-Known Member
Not sure what you define as 'road noise'. The road itself is basically quiet. Your tires can make noise, your (especially manual) transmission can make noise and your (car's) rear end can definitely resonate some noise. Yes, some of this can be 'masked' - but I would get to the root of the particular offender. Factory didn't need to add acres of insulation (other than original jute) so why should we?
My Signet's only evident noise while driving is from around the doors and or side windows - due to original weather seal having shrunk slightly. Quarter windows also major culprits. Me? I would correct any wind noise first and then correct whatever driveline component noise.
512Stroker
We are all here because we are not all there.
Lizard Skin Liner
geminimotors
Well-Known Member
I bought 50 sq ft of 50mil Kilmat through Amazon. $87 shipped. 2 hours this afternoon, and I still have enough left to cover under & behind the back seat. I thought it would be thicker, but install was a breeze.
chinze57
Push Button tranny and a Slant 6 that'll never die
That's really good coverage. Let us know how it performs once you get it out driving, definitely curious how you feel about it.
Joeycurl
‘72 Demon 440
Any update on this? I am deciding between jute or mat to put in my car
chinze57
Push Button tranny and a Slant 6 that'll never die
no update yet! I’ve got the Kilmat 80mil, 72ft^2 of it. Need to replace some very rotted floor pans before I can install it.
1975abody
Well-Known Member
Lot of good technical information here on the de-coupling, sound barriers, sound isolators etc.
Products | Sound Deadener Showdown
Products | Sound Deadener Showdown
I'm in the process of doing the inside of my Dart with Dynamat products. I am particularly in favor of using DynaPad on the floor, firewall. This stuff is thick, made of 3 dissimilar layers and is not adhesive backed. On the floor you can lay it down and take it up with the carpet if you need to do anything attached to the floorpan. I'm planning to run it all the way up the firewall where the original board and insulation stuff was. I saved the old boards and removed the fiberglass insulation and will use them to support the non adhesive dynamat using the factory style plastic push through anchors. Then I'll use dynamat on the roof, doors and quarters.
Two ideas I'm considering that I would like thoughts on:
Since the car is down to a bare shell what are the pros and cons to putting the adhesive dynamat inside the doors on the inside of the outer door/quarter shell, rather than on the inside door shell right under the interior door panel?
Will it work to insulate where the board trunk divider is and the package shelf, rather than doing the trunk? Since I don't plan to ride in the trunk, it seems like unneeded expense to do the inside of the whole trunk.
Two ideas I'm considering that I would like thoughts on:
Since the car is down to a bare shell what are the pros and cons to putting the adhesive dynamat inside the doors on the inside of the outer door/quarter shell, rather than on the inside door shell right under the interior door panel?
Will it work to insulate where the board trunk divider is and the package shelf, rather than doing the trunk? Since I don't plan to ride in the trunk, it seems like unneeded expense to do the inside of the whole trunk.
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