Fecking bird poop.

[taaffy]

I had the misfortune to have a bird deposit the contents of it's ass on my shiny black car bonnet a month or so ago. It was a hot day and the deposit was on there for about 2 hours before I noticed it. I wiped it off but there were 5 dull areas where the poop had stuck.

Next day I attacked them with my Porter cable and managed to remove the marks as I could no longer see them so sealed it with finish kare 1000, it looked absolutely perfect with no signs of the dullness.
About a week later the marks slowly began showing back through the lacquer to the point where they looked virtually the same as before.

I again used the porter cable and product to transform the lacquer back to a perfect mark free gloss and again sealed it with finish kare 1000.

Now again after about 3 weeks this time the marks are beginning to come back.

Has anyone any idea how to stop this happening.

The colour is Porsche basalt black metallic.

Edited by taaffy on Monday 15th July 16:34

[jagnet]

See Kelly's post about 5 down on this thread re fillers in polishes hiding the damage, only for it to be revealed over time as the fillers break down.

[kds keltec]

jagnet said:

See Kelly's post about 5 down on this thread re fillers in polishes hiding the damage, only for it to be revealed over time as the fillers break down.

I am really glad that the message is getting over, i can never tell if when i write and it falls on deaf ears , well blind eyes in this case.

There is no way of telling on this forum really.

So happy that members do read and hopefully learn from it for the future

Kelly

[taaffy]

I machined the whole car 4 months ago under halogen lighting and removed all of the swirls and scratches using the same products and none of those have reappeared, So I am guessing that my products are not filler based.

I am using poorboys ssr 1, 2 , 3 compounds.(whichever is needed to do the job) then Sonus sfx final finishing polish then sealing with finish kare 1000.

I have read that if the poop is not neutralized that it can still come back through the paint, is that true?

[jagnet]

kds keltec said:

I am really glad that the message is getting over, i can never tell if when i write and it falls on deaf ears , well blind eyes in this case.

I can only speak for myself, but I always find your posts very informative and appreciate you taking the time to write them.

taaffy said:

I machined the whole car 4 months ago under halogen lighting and removed all of the swirls and scratches using the same products and none of those have reappeared, So I am guessing that my products are not filler based.

All polishes will have some degree of filling to them from their lubricating oils and residual cutting compounds even if they're not intended to be used as such and unless properly removed when checking progress are going to hide the true state of the paintwork.

The swirls and scratches may have been fully removed, or the time taken for them to reappear may be longer depending on their severity. Most likely you have a combination of both going on. More often than not, swirls and scratches that come back over time are then blamed on fresh wash marring.

I know I've been caught out by bird mess marks reappearing a few months later and with the benefit of hindsight I'm certain that it was for this very reason. One additional pass with P1 and the rotary and it's been fine since.

I'm fairly sure that by the time the spot in question has been washed, clayed, polished and cleansed that any bird mess will have been fully neutralised. Without evidence to the contrary, I'd be more inclined to put that down as a common myth to explain the scenario that Kelly describes.

[taaffy]

Should I now be looking at a pro detailer to sort this out.

[Try5t]

taaffy said:

Should I now be looking at a pro detailer to sort this out.

Have you got a depth tester for the paint? Sounds like you may need to use a more aggressive compound but I would want to measure the depth first.

I have found that some deposits leave a greasy residue in the paint that needs to be removed chemically, perhaps with a tar and glue remover followed by a light machine polish. It would be really bad luck if the paint has been oxidised underneath, which can happen if you don't remove it quick enough or it the stain is subject to lots of heat. Had had happen one of my old cars and had to respray the bonnet.