undercoating

[1970cat]

does anyone know of a source for the old style of rubberized undercoating in spray cans? i am looking for the thick bumpy stuff. it seems that most of the new stuff is thinner, like paint.

 

[1978 NYB]

Since this popped up....

 

[commando1]

You want the 3M™ Rubberized Undercoating 08883 stuff. Not the 08881 stuff at AutoZone et al. And never the Rustoleum stuff.
It still won't be the goo Mopar used back in the day. You'd need a concrete pump for that stuff. Ask Ross if roofing stuff can be sprayed.

 

[Stormer]

Roofing stuff can be sprayed but I don't think it would do well in that application.

Don't those spray products cause moisture problems & aren't you better off just using flat black spray paint?

 

[67Monaco]

Ask Ross if roofing stuff can be sprayed.

They seemed to have found a way to spray it on the inside of my McFuckup quarter panel.... Might be driveway goo, who knows..

 

[1978 NYB]

I had a bad cat converter on my 1978 NYB. It got hot enough to burn a hole the size of a baseball through the shield but it didn't even burn or melt the undercoating.

 

[Wildaugust]

I tried using the roofing sealant on one of my cars. It didn't last very long until it all cracked. I find the Bondo brand aerosol rubberized undercoating to work quite well, but it does have to be touched-up every now and then.
My Newport has the old thick undercoating under it. Problem is whoever did it sprayed everything. Maybe they did spray it with concrete, I don't know. :laughing11: The stuffs as hard as a rock! I've tried scraping, chiselling, using Varsol and other paint remover. I even tried spraying it with brake cleaner and gasket remover. So far nothing takes it off. :frustrated:
I'm not trying to remove all of it, at least not at the moment. I would like to get it off the small parts and adjusters though.

 

[1970cat]

My Newport has the old thick undercoating under it. Problem is whoever did it sprayed everything. Maybe they did spray it with concrete, I don't know. :laughing11: The stuffs as hard as a rock! I've tried scraping, chiselling, using Varsol and other paint remover. I even tried spraying it with brake cleaner and gasket remover. So far nothing takes it off. :frustrated:
I'm not trying to remove all of it, at least not at the moment. I would like to get it off the small parts and adjusters though.[/QUOTE]

that's the stuff i'm looking for. i'm patching the floors and would like to blend it in with what is already on there

 

[Big_John]

I tried using the roofing sealant on one of my cars. It didn't last very long until it all cracked. I find the Bondo brand aerosol rubberized undercoating to work quite well, but it does have to be touched-up every now and then.
My Newport has the old thick undercoating under it. Problem is whoever did it sprayed everything. Maybe they did spray it with concrete, I don't know. :laughing11: The stuffs as hard as a rock! I've tried scraping, chiselling, using Varsol and other paint remover. I even tried spraying it with brake cleaner and gasket remover. So far nothing takes it off. :frustrated:
I'm not trying to remove all of it, at least not at the moment. I would like to get it off the small parts and adjusters though.

Heat is your friend. I've used propane torches with great success, but I would expect a good heat gun would work too, but not as good as the torch.

 

[monaco75]

Heat is your friend. I've used propane torches with great success, but I would expect a good heat gun would work too, but not as good as the torch.

The torch worked for me the best at getting it off. Was the only thing that would get the stuff off of the inner fenders i was cleaning. Had to heat it up, then take a scrapper to it. Time consumimg, but the best result.

 

[67Monaco]

Needle scaler worked for me.

The roof/driveway tar a simple 5 in 1 scraper did the trick.

 

[commando1]

Propane torch and scrapers here also. Could literally peel it off in sheets.

< Sent from my tablet >

 

[cm23uoc]

If the stuff is really dried out and old a cold day in winter can be your friend; just a few soft blows with a hammer will literally let it jump off to my experience.