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Thread: okay what did i do wrong on my roof?

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    Member Excited Fourdoor6pack's Avatar
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    Default okay what did i do wrong on my roof?

    I did a roof repair over the Christmas break. I thought it took well , obviously it didn't. I have a bunch of big spots where the primer and fiberglass lifted. it seems to be in the areas that had huge rust spots before. I used self etching primer, fiberglass to level the bad areas and filled all holes with jb weld for strength. then painted it all matte black.

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    Default Re: okay what did i do wrong on my roof?

    Just guessing here because with the problems I had in the past. Most likely nothing will stick to JB weld for very long, kind of like brazing, there are no pores to adhere to.
    After you used the self etching primer did you go back with a 37 grit, or a grinder before applying to filler? If not it will not stick to primer very long.
    Last option is bad product, un cured product.

    Sorry to hear that, it is very disheartening when things like that happen, but it happens to everyone, even body shops.

  3. #3
    Member Excited Fourdoor6pack's Avatar
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    Default Re: okay what did i do wrong on my roof?

    No I didn't think I would need to sand the primer. I guessed wrong. Thanks Traveler. I will keep that in mind when I re do it.

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