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| 09-05-2025, 10:04 PM | #1 |
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Etching due to Bird Poop
I have a brand new X3 G45 in Arctic Race Blue. I’m really surprised how easily it is for bird poop to damage the clear coat. Damn birds. I have a couple tiny spots, about the size of a pencil eraser head, where I think the poop etched the clearcoat slightly.
Any advice on how to get rid of, without polishing? If I do have to polish, I prefer the lightest polish possible. Like I said, my vehicle is only 3 months old, and 99% of the clearcoat is in “mint” condition. So I don’t want to do anything drastic. |
| 09-05-2025, 10:51 PM | #2 | ||
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Otherwise, I have to go by your words that the clear-coat is indeed damaged. In that case, your nail would catch on the rough spots as you go over the area. If this is the case, the best you can do is polish / abrade the damaged layers away to even it out the clearcoast. Hopefully, the damage is within the top few microns and that can it be cleared away with minimal removal of clearcoat. If you let particularly caustic bird poop to sit on the paint long enough, it can eat its way all the way through the clearcoat and into the main paint layer. So prompt removal of poop is key. Quote:
Then apply some sacrificial protection in the form of wax or ceramic coating. For reference, clear coat is usually 1-2 mils thick, the base coat is another 0.5 to 1.5 mils, and primer another 2-3 mils thick. 4-6 mils overall. Ceramic coating will add another 1-2 microns (0.04-0.1 mil) on top. It's not much, but it might be enough if you remove bird poop fast enough. Either wax or ceramic layer will be the first to take a hit from bird poop in the future, and buy you a little more time to remove the poop before it damages clearcoat. Good luck, a
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| 09-05-2025, 11:03 PM | #3 |
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That sucks, what a bummer.
I noticed a scratch on my passenger rear window today. The only way I know is polishing the paint with a machine for poops and water spots. Do you have a sealant or coating on the car? That helps minimize the impact of the damage but then you have to spot repair that. I carry a bottle of Ech20 spray in the car to get the spots as soon as I see them. As far as polish I don't really have a suggestion for light polish since I don't feel it will take it down. Or it will but take forever. I would do something like Sonax EX 04-06 and a DA with a white polishing pad( Lake Country pads). I went lighter than that and bought Sonax Profiline Nano Polish 03-06. It made quick work of the water spots that collected on my rear bumper ledge. I had tried CarPro Essence first and it didn't remove them. Sonax was one pass. |
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| 09-05-2025, 11:49 PM | #4 | |
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I was thinking about trying a water spot remover, such as from Gyeon. I figure that’s completely harmless, and it doesn’t involve polishing. Or maybe, perhaps try a clay bar. Yes, live and learn. After I remedy these several spots, I will definitely ceramic coat the entire vehicle. I realize that would reduce the damage done by bird poop, in the future. |
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| 09-06-2025, 12:04 AM | #5 |
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New owner, ARB G22 that went to the detailer a week after delivery for ceramicoat. He showed me a pic of a very light discoloration that looked like a bird poo that hit and slid down. Sorry no pics.
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| 09-06-2025, 05:11 AM | #6 | |
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Water spot remover is unlikely to help with clear coat poop etching. If it’s etched the actual clear coat surface has been damaged, rather than minerals deposited on the surface that can often be removed if addressed in a timely manner. You could try this product that is designed to make the clear coat “reflow” when it has been etched due to bird poop reaction. https://autoglymcentral.co.uk/autogl...sional-reflow/ |
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| 09-06-2025, 10:18 PM | #7 | |
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| 09-06-2025, 10:53 PM | #8 | |
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| 09-07-2025, 06:04 AM | #9 | |
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That said, Autoglym is an established and well respected UK manufacturer, and one of the few that actually does its own product R&D. Last edited by avi66; 09-07-2025 at 09:13 AM.. |
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| 09-07-2025, 06:55 AM | #10 | |
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| 09-09-2025, 09:31 AM | #12 | |
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"...designed to heat to a specific temperature which they retain for a specific length of time to create the optimum conditions for the paint to soften, reflow and fill the etchings caused by the bird droppings." The engine definitely wouldn't heat it to a specific temperature for a specific amount of time, at least not one that you would have much (if any) control over. |
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| 09-09-2025, 10:20 AM | #13 | |
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It’s possible to “reflow” clear coat using a heat gun, but there a real danger of bubbling the paint if you don’t have experience. I’ve seen the Autoglym Reflow solution work on some etch marks with great results, but not so great on others. Horizontal or vertical orientation may make difference, as does the age of the paint etc. |
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| 09-11-2025, 10:59 PM | #14 |
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When you say “not so great on others.” Do you mean it made it worse or it had no effect and remained the same?
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| 09-12-2025, 02:20 AM | #15 |
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| 09-12-2025, 02:23 AM | #16 |
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