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I was told my 64 Grand Prix was a double roof. Is this true?
I have some rust coming thru on the roof right above the door towards the windshield, but not around the windshield. I had someone tell me that since most of the older cars had double roofs, that probably the roof under it was rusted thru. Is this true? This is really the only rust on the car that has me concerned.
posted: August 28, 2011
  Answers (4)
there is an inner frame work arround the edge of the top with cross braces that the outer skin is spot welded to.possibly water got in between the two layers by the driprail moulding..2 possible ways to check frist is to remove driprail and inspect ,the other is to loosen hesdliner in area of rust spot. there is also possibilty that water got under paint somehow and you just have blisters there.
posted:  August 28, 2011
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Thank you for the info. Although from a distance the car looks great, you can tell when you get up close that it was not prepared correctly when it was last painted. Thanks again.
posted:  August 29, 2011
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That would be an ODD spot for a 64 to start rusting!! Is it only on one side or both?

If the car had been repainted chances are pretty good that their is a prep failure or some water got into the paint or that one spot wasnt treated correctly due to, who-knows-what? The only way to truly know would be to sand that area back to metal, prep it correctly and re-paint that area. If the paint is base-coat clear-coat feathering the paint to match shouldnt be to big of an issue!
posted:  August 29, 2011
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Yes, the rust is on both sides. If you were sitting in the car with the window down & your arm on the window, where your hand would fall on the roof is exactly where it is rusting on both sides.
posted:  August 29, 2011
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