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Repairing underseal

Discussion in 'A3/S3/Sportback (8P Chassis)' started by Vertigo1, Jan 21, 2008.

  1. Vertigo1
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    Vertigo1 Well-Known Member

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    [Jan 21, 2008]
    Anyone got any tips for repairing underseal, or know what the best stuff to use is?

    Managed to scrape a bit of it off under one of the sills at the weekend, down to the metal so needs covering up again really. (it's a long story which involves a field, a lot of mud, the RAC and a man with a land rover).
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  3. marms
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    marms Member

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    [Jan 22, 2008]
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  4. SteveTDCi
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    SteveTDCi Active Member

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    [Jan 22, 2008]
    I'd just clean up the area and then apply some stone chip. Its all I used on the underside of my escort. I got the stuff from my local motor factors / paint specialist. Most of the stuff you buy contains waxoil. I then painted mine.

    [​IMG]
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  5. Vertigo1
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    Vertigo1 Well-Known Member

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    [Jan 22, 2008]
    I'm not exactly sure what the stuff that's been scraped off is tbh. I presumed it was underseal but someone has suggested otherwise. It's like a thick rubbery material which is obviously applied to protect the underside of the car from grit and stones etc, then painted over.

    Any idea exactly what it is?
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  6. SteveTDCi
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    SteveTDCi Active Member

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    [Jan 22, 2008]
    It will be some form of rubberised underseal, you should be able to pick something up locally, it doesn't need to be the exact stuff as applied by the factory.
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  7. a3guy
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    a3guy Member

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    [Jan 22, 2008]
    used to use this stuff yonks ago


    Tetraschutz

    [​IMG]
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  8. SteveTDCi
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    SteveTDCi Active Member

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    [Jan 22, 2008]
    Thats ok but it leaves a crackled finish if you brush it on
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  9. Vertigo1
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    Vertigo1 Well-Known Member

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    [Jan 22, 2008]
    There seems to be some confusion between underseal and "stonechip paint", is it the latter which I need (and what that schutz stuff is - someone else mentioned this name)?

    Steve, well the underside of the sills does have a kind of crinkly finish - do you reckon I'd be better off masking the area and spraying rather than brushing?
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  10. SteveTDCi
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    SteveTDCi Active Member

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    [Jan 22, 2008]
    depends what finish you want, brushing is easier. The spray stuff doesn't go that far, I never masked when I did the escort. You could try Audi - they might have something.
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