Peter

My car's paintwork has been damaged by parking under a leaking air
conditioning duct. The car is now covered in a hardened chalky coloured
martial , a bit like limestone.

It came off the windows OK using a stanley knife blade but I can't shift it
off the paintwork. So far I've tried soap, petrol, white spirit, T cut,
polish, vinegar and Cillit Bang.

Any other suggestions????

Thanks

Peter

Geo.B

Probably is limestone residue, try kettle descaler, (on unimportant paint
site first)

MrGrumpy

As a last resort, rubbing compound or wet/dry paper - use a block and plenty
of water

"Peter" <peter.everett@virgin.net> wrote in message
news:rot7f.3577$iZ4.3481@newsfe2-gui.ntli.net...
> My car's paintwork has been damaged by parking under a leaking air
> conditioning duct. The car is now covered in a hardened chalky coloured
> martial , a bit like limestone.
>
> It came off the windows OK using a stanley knife blade but I can't shift
it
> off the paintwork. So far I've tried soap, petrol, white spirit, T cut,
> polish, vinegar and Cillit Bang.
>
> Any other suggestions????
>
> Thanks
>
> Peter
>
>

sploop

And dont forget to lubricate with soap

"MrGrumpy" <dl@spoofmail.notme> wrote in message
news:R%G7f.9112$Ce5.3570@newsfe1-gui.ntli.net...
> As a last resort, rubbing compound or wet/dry paper - use a block and
> plenty
> of water
>
> "Peter" <peter.everett@virgin.net> wrote in message
> news:rot7f.3577$iZ4.3481@newsfe2-gui.ntli.net...
>> My car's paintwork has been damaged by parking under a leaking air
>> conditioning duct. The car is now covered in a hardened chalky coloured
>> martial , a bit like limestone.
>>
>> It came off the windows OK using a stanley knife blade but I can't shift
> it
>> off the paintwork. So far I've tried soap, petrol, white spirit, T cut,
>> polish, vinegar and Cillit Bang.
>>
>> Any other suggestions????
>>
>> Thanks
>>
>> Peter
>>
>>
>
>

RedDrawf

> > "Peter" <peter.everett@virgin.net> wrote in message
> > news:rot7f.3577$iZ4.3481@newsfe2-gui.ntli.net...
> >> My car's paintwork has been damaged by parking under a leaking air
> >> conditioning duct. The car is now covered in a hardened chalky coloured
> >> martial , a bit like limestone.
> >>
> >> It came off the windows OK using a stanley knife blade but I can't shift
> > it
> >> off the paintwork. So far I've tried soap, petrol, white spirit, T cut,
> >> polish, vinegar and Cillit Bang.
> >>
> >> Any other suggestions????
> >>

I wonder if a clay bar would work?

Graham L

"RedDrawf" <picaro_1955@yahoo.com> wrote in message
news:1131820039.227217.288420@f14g2000cwb.googlegroups.com...
>> > "Peter" <peter.everett@virgin.net> wrote in message
>> > news:rot7f.3577$iZ4.3481@newsfe2-gui.ntli.net...
>> >> My car's paintwork has been damaged by parking under a leaking air
>> >> conditioning duct. The car is now covered in a hardened chalky
>> >> coloured
>> >> martial , a bit like limestone.
>> >>
>> >> It came off the windows OK using a stanley knife blade but I can't
>> >> shift
>> > it
>> >> off the paintwork. So far I've tried soap, petrol, white spirit, T
>> >> cut,
>> >> polish, vinegar and Cillit Bang.
>> >>
>> >> Any other suggestions????
>> >>
>
> I wonder if a clay bar would work?



What you need is a chelating agent that dissolves calcium salts. Have you
tried CLR or any of those other shower nozzle, electric kettle etc. cleaning
products?
Another method might be to wet the area with bicarbonate of soda solution
(very mild alkali which turns the calcium to calcium carbonate), let that
dry then wash that of with acetic acid (vinegar, a very mild acid which
fizzes a bit as the acid dissolves the carbonate). It cleans oxide build up
off ceramic tiles and glass and it's not abrasive so it won't hurt
paintwork.

Graham L