replacing undercoating
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Posted Thursday, January 28, 2010 6:42 PM
Supreme Being

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Hoosier Hurricane (1/28/2010)
Years ago when I restored my Bird, CTCI ruled that Birds were not undercoated at the factory. Dealers undercoated them if the customer wanted it. I don't know the rule now. If you are restoring to CTCI standards, and the rule hasn't been changed, then removing the undercoat completely is the plan. If you are not going for a perfect CTCI score, repair the undercoat and enjoy the car.


Concours original no undercoat. Concours Non original ok.


54 Victoria 312; 27T 255 Flathead, 48 Ford Conv 302, 56 Bird
Forever Ford

Midland Park, NJ
Post #38665
Posted Saturday, January 30, 2010 6:44 AM
Supreme Being

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Thanks for all the replies.  Very helpful.  this is the best car forum out there.
Post #38770
Posted Saturday, January 30, 2010 8:02 AM


Supreme Being

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Sorry about the delay getting back to you, but you have got some good advice from other members. Here is the stuff that I use, I got it from my friends body shop.

This is what it looks like and I understand that you can paint it.



Glen Henderson

Freedom is not Free
Letohatchee, AL

Post #38775
Posted Wednesday, February 17, 2010 10:15 AM
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I have used rubberized undercoat and it works fine--if it is not put on very heavy otherwise it will crack and let in moisture. Use just enough to cover the surface.

Old Y Block

Post #39909
Posted Wednesday, February 17, 2010 1:54 PM
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When I stripped the undercoating on the bottom of my 57 bird I didn't find any evidence there had ever been any kind of of paint on the bottom of the body. It was in rough shape but where the undercoat had stuck good it was like new metal, maybe a hint of some kind ot thin black paint. I'v always wondered why the concourse people want the bottoms treated like the top when Ford never did originally. I used 3m rocker shutz..not the body shutz..it's tough and paints good. i also  used a product by Fusion that painted over good. It actually covered better and looked like the original.
Post #39925
Posted Wednesday, February 17, 2010 6:55 PM


Supreme Being

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There's actually 3 different products mentioned here. 1) rustproofing- a non hardening, waxy, grease like thick bodied goo, on the order of Cosmoline/ (smells nasty) 2) Sound deading undercoating- smells a bit like tar. drys /hardens to the touch. All it really does is add mass to the sheet metal so it won't resonate as easily. 3) Rubberized undercoating- Applied only in areas (generally wheelwell area) where stones and gravel would be expected to abrade paint, causing rust. Gravel will "bounce" off the stuff harmlessly....

BOO- YA!!!    
Post #39944
Posted Wednesday, February 17, 2010 7:13 PM
Supreme Being

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Not to mention Body Men like to use it to hide shoddy work...

BOB

Post #39946
Posted Friday, February 26, 2010 6:39 AM
Supreme Being

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Rubberized flashing cement for roofing is the same stuff as rubberized undercoating, yet 1/10th the price. you can usually find a 5 gallon bucket kicking around someones barn for free. Mix with thinner, put in paint shaker until desired consistency and use as undercoat. I even mix more sometimes to use through old paint spray gun and use for black paint on chassis parts. I have been painting implements for years with the stuff and left out in the harsh Maine elements they do not rust.

55 Vicky & customline

58 Rack Dump, 55 F350 yard truck, 57 F100

59 & 61 P 400's, 58 F100 custom cab, 69 F100, 79 F150, 82 F600 ramp truck, 90 mustang conv 7 up, 94 Mustang, Should I continue?

Post #40261
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