rubberized undercoating/dynamat
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Senior User
Joined: Sep 2008
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rubberized undercoating/dynamat
I wanted to get your opinion on whether I should spray rubberized undercoating on the floor then laying dynamat on top of that or just putting the dynamat down without the coating. I would like my truck to be as quiet as possible inside.
Post Fiend
Joined: Jul 2004
Posts: 8,786
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From: Northern California
If your truck is not equipped, you should get the sound deadening package from another truck.
It comes with sound insulation for the firewall, and floor, and the inside of the doors are coated with rubber sound deadener as well.
My truck is factory equipped, and it's extremely quiet.
My truck was also undercoated with a black rubberized coating at the dealer, which now after 30 years is starting to flake off. so be careful if you use it for that reason.
It comes with sound insulation for the firewall, and floor, and the inside of the doors are coated with rubber sound deadener as well.
My truck is factory equipped, and it's extremely quiet.
My truck was also undercoated with a black rubberized coating at the dealer, which now after 30 years is starting to flake off. so be careful if you use it for that reason.
Junior User
Joined: Jul 2006
Posts: 71
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From: North East OK
You'll be hard pressed to out perform the Dynamat with that rubberized coating. But, the Dynamat stuff is freak'in expensive. I used something very similar to Dynamat, suppose to be every bit as good, but the name eludes me now. You can google Dynamat Alternatives and find it, though.
Elder User
Joined: Apr 2003
Posts: 673
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From: Maryland
There's no way I would cough up all that cash for Dynamat. Have you looked at Peel & Seal? http://mobilehomepartsstore.com/Merc...ct_Code=540122 This stuff is reasonably priced and designed for harsh outdoor environments. For the cost of a few sq ft of Dynamat you can do the whole cab!
If heat is an issue, you can add the stick-down Frost King Foil Duct Insulation from Lowes for an additional 15 bucks... http://www.lowes.com/lowes/lkn?actio...il=&lpage=none
Of course you will want to do a thorough cleaning and rust abatement prior to using these products on your floor pan. This is what I plan on doing with my truck when I get to that part of the project.
If heat is an issue, you can add the stick-down Frost King Foil Duct Insulation from Lowes for an additional 15 bucks... http://www.lowes.com/lowes/lkn?actio...il=&lpage=none
Of course you will want to do a thorough cleaning and rust abatement prior to using these products on your floor pan. This is what I plan on doing with my truck when I get to that part of the project.
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Elder User
Joined: May 2007
Posts: 548
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From: Sparks, NV
summit racing's house brand of sound deadener. its the peel n stick stuff made out of a tar like substance. i doubled up on my doors, the outter skin and the inner skin, and the left overs i put behind the seat. Doors sound solid, and the truck is purdy quiet without even touching the floor. For the price, i did the two doors for the price of one dynamat roll. If it dries up and breaks off im not gonna lose sleep. my 2 cents
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Post Fiend
Joined: Jul 2004
Posts: 8,786
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From: Northern California
There will be a thin sound proofing layer as well as moulded cork insulation under the floor mat or carpet as well.
There is more to it, but those are the simple things to see.
Junior User
Joined: Jul 2006
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From: North East OK
I used a product called second skin, which is much cheaper then Dynamat and is every bit the quality. It really made a difference in the sound deadening of my 86 F150 4x4. I'll be using it in the restoration process of my 69 Mustang too.
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Joined: Aug 2009
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From: NoGa.
Go here:
https://www.ford-trucks.com/forums/8...b-edition.html
Em did a real good job insulating the inside of her cab ... when last I heard she was looking for a way to get expanding foam into the overhead (head liner?) of the cab.
She posted a bunch of tips and pictures.
BE CAREFUL ... a lot of these methods can trap moisture ...
We got enough problems ... we don't need to be givin' them Rot Demons a place to live.
https://www.ford-trucks.com/forums/8...b-edition.html
Em did a real good job insulating the inside of her cab ... when last I heard she was looking for a way to get expanding foam into the overhead (head liner?) of the cab.
She posted a bunch of tips and pictures.
BE CAREFUL ... a lot of these methods can trap moisture ...
We got enough problems ... we don't need to be givin' them Rot Demons a place to live.
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Senior User
Joined: Sep 2008
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yeah I saw heard thread em posted, it was very inspiring. I was debating about doing what she did but I saw FatMat on ebay for $170 for 100 sq ft. Or I can get Dynamat for wholesale price. Ill probably just end up buying the fatmat and insulate everything (i.e. roof, doors, floor, firewall) but it'll have to wait another month since I got side-swipped today 
either way ima post up pics of the tear down, rubberized undercoating and insulation
either way ima post up pics of the tear down, rubberized undercoating and insulation
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