Headliner Insulation - undercoat?

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swing69

fightin' socialism
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I'm at bare steel on the interior, and want to do some "cheap" soundproofing / deadening.

Before I put up the batting for the headliner, what about undercoat for on the metal? how about roll on bedliner????

I'd rather not try to bond on any material (like dynammat), just incase the sunlight heat make it fall onto the headliner......

opinion?
thanks
 
I have given this a lot of thought for my own car when the time comes, and I think straight up non foil backed fiberglass home insulation is what I'm going to use.
It's light enough to to be held up with contact cement and will def do the job.
(For a carboard liner, but you probably have a cloth liner) and I don't think I would try it with that.

Noisey as hell when it rains isn't it? :)
 
Take a gallon of good non-automotive primer (I used Glidden), mix in some of what's called "inorganic microspheres" or more commonly referred to as "glass balls", widely available at marine supply stores, and you've just made your own Lizard Skin for a fraction of the cost of the real stuff.
I used it throughout my car before applying sound deadening material from B-Quiet.
 
I would think carefully about what odors/gases may be given off on a hot/sunny day,, I'm thinking about the "tar" based products
 
I would think carefully about what odors/gases may be given off on a hot/sunny day,, I'm thinking about the "tar" based products

X2. - I think undercoat will cook the smell out of it over and over.
Not sure if bed liner will do much for sound...
I like the idea Trailbeast has.
 
read up on the sound deadener showdown. If youre worried about heat, you'll want a foil backed product. the good ones, heat will only make stick better. For sound control, vibration dampening products like ceramic tiles or the right foil backed stuff in say foot by foot squares in the middle of the panels (in between crossbows for the headliner) should take care of any road/wind/rain noise under a layer of insulation of course. You can go cheap or you can get what you pay for what you get. Sometimes you can get both. I used Rammat and Ensolite, proven effective and better priced than most other big name materials but also not a home depot special.
 
Gravity takes its toll on everything. Bows on the umbrella type headliners are tight against the roof skin. I would definitely see proof of what worked long term rather than experiment.
 
I used rattle trap, bought it off ebay, 100 square foot did my floor, roof, inside of the doors and back passenger window area and most of the trunk, came with a roller and knife. Once rolled on never dropped, did a test and inside the car to outside with just the insulation was a two degree drop in temp, inside being cooler.
 
Spray on Boom Mat is what I will be using, without a headliner also...Street Strip car with cage
 
I have some Gravitex (U-pol). from the website: Gravitex "Plus"....not sure what "plus" gets you:

But:

GRAVITEX PLUS
is a tough, hard, durable coating designed to repro
duce the manufacturers
original stone chip finish. It will protect agains
t stone chips, salt, damp and rust.
GRAVITEX
PLUS
will also help to deaden sound and vibrations and
is, therefore, ideal for application to
panels and inside engine compartments.
The high bui
ld formula will cover weld marks and
seams, often in one application.
 
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