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Paint and Body Maintenance & Repair

1025 messages,  Last post on Nov 12, 2009 at 10:06 AM

You are in the Maintenance & Repair Forum. Your Host is mr_shiftright

What is this discussion about? Auto Body, Paint, Coupe, Convertible, Hatchback, Truck, Sedan, Wagon, SUV, Van


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#1011 of 1025
Re: Water stains [jwbooth] by Mr_Shiftright HOST
Sep 04, 2009 (8:08 am)
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Replying to: jwbooth (Sep 04, 2009 5:33 am)

I think that before I did anything drastic (or abrasive) I'd try some of those "instant detailer" products that you spray and wipe with a soft cloth. The stubbornness of the stain depends a lot on the minerals in the water, and that will vary place to place. The water in my area is "hard" and mineralized but a quick wipe of my dark green paint gets the sprinkler stains off.
 
I think clay is overkill for water spots, as it a professional detailer---both would be last resorts IMO.
 
As for any "home remedies", which might work just fine, be sure to test them out on the bottom portion of a rocker panel or bumper before you slather any household product on your car.
#1012 of 1025
Re: Water stains [jwbooth] by tallman1
Sep 04, 2009 (9:00 am)
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Replying to: jwbooth (Sep 04, 2009 5:33 am)

As a resident of Washington state, I have some experience with water.
 
Actually, there is a difference between water that falls from the sky and water that comes from a hose or sprinkler. Rainwater around here rarely causes any spotting that won't come out when you wash your car. So you can relax when you come to visit. Of course, EVERYTHING shows up on a black car.
 
As Shifty says, hard water from a hose or sprinkler can cause spotting. I recently had some experience with this in the eastern part of the state where the water is harder than here in the west. I parked in my in-laws' driveway and their sprinklers caught the fender of my car. This was non-potable irrigation water. Ugh. The stains didn't come out after multiple washings but they did come out when I did my annual detailing. That included clay and applying a high quality paint sealant with an orbital. I really didn't pay attention to which step did the job.
 
IMHO, if you wash the car so that there is no loose dirt or dust, you shouldn't have any trouble with clay or wiping the paint with a microfiber cloth. A fine polish should also do the trick.
 
Finally, (and obviously) if you wash your car and dry it right away, water spots will not form. When the sprinklers get you and that water dries in the sun, you'll get spots.
#1013 of 1025
Clearcoat Failure by oldfarmer50
Sep 12, 2009 (3:05 pm)
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I've been noticing a number of cars with what looks to be clearcoat failure. This appears to be an area of faded paint surrounded by a hazy border. It looks terrible.
 
What's the main cause of this? More importantly, what can be done to protect paint from the clearcoat breaking down?
 
I wonder if certain car brands or colors are more likely to have this happen.
#1014 of 1025
Re: Clearcoat Failure [oldfarmer50] by Mr_Shiftright HOST
Sep 12, 2009 (3:14 pm)
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Replying to: oldfarmer50 (Sep 12, 2009 3:05 pm)

Lots of things---UV damage, pollution damage, just negligence from not washing the car often enough in a high pollutant area---or using the car's hood as a shelf, etc.
#1015 of 1025
Re: Clearcoat Failure [Mr_Shiftright] by oldfarmer50
Sep 12, 2009 (7:25 pm)
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Replying to: Mr_Shiftright (Sep 12, 2009 3:14 pm)

"...UV damage, pollution damage...not washing the car often enough..."
 
So it sounds like the best protection would be a good old wash and wax.
 
It seems black cars show this kind of damage more often. Red would be second. Any opinion on that?
#1016 of 1025
Re: Clearcoat Failure [oldfarmer50] by Mr_Shiftright HOST
Sep 12, 2009 (9:06 pm)
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Replying to: oldfarmer50 (Sep 12, 2009 7:25 pm)

Color shouldn't matter, since the clear coat completely covers the color coat. When you buff a clear coated car, you don't get any color on the rag (hopefully not anyway).
 
This is why I'm really against any heavy buffing of a clear coat car---once you break the clear coat barrier, you can't just repair the top coat---you have to do both clear coat and color coat together.
#1017 of 1025
Re: Clearcoat Failure [oldfarmer50] by jipster
Sep 15, 2009 (6:37 pm)
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Replying to: oldfarmer50 (Sep 12, 2009 3:05 pm)

What's the main cause of this? More importantly, what can be done to protect paint from the clearcoat breaking down?
 
I would think an improper repaint and clearcoat application. I had some clearcoat failure on used Nissan Altima I had. I bought a small bottle of clearcoat, scraped off the clearcoat that was loose, and used the liquid clearcoat to seal along the border that was breaking down. Seemed to work fairly well.
#1018 of 1025
Re: Clearcoat Failure [jipster] by oldfarmer50
Sep 16, 2009 (9:28 am)
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Replying to: jipster (Sep 15, 2009 6:37 pm)

"...I had some clearcoat failure..."
 
I probably haven't noticed cars that have small areas of failure. What I've seen are cars that have large areas (several square feet) where the clearcoat seems to be sloughing off either in one spot or several spots on one panel (like the hood).
 
Makes an otherwise attractive car look bad.
 
I figured that sunlight was the main culprit but I was wondering if there was anything special I could do to ward off premature failure. Maybe I'll wrap my cars in plastic like they used to do with living room furniture.
#1019 of 1025
Re: Clearcoat Failure [oldfarmer50] by obyone
Sep 16, 2009 (1:09 pm)
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Replying to: oldfarmer50 (Sep 16, 2009 9:28 am)

I figured that sunlight was the main culprit but I was wondering if there was anything special I could do to ward off premature failure.
 
Parking it in the garage usually works too.
 
I thought you were describing catastrophic failure of the clearcoat. When reading Jipster's reply was beginning to question my reading ability. Glad it wasn't me.
#1020 of 1025
Re: Clearcoat Failure [obyone] by jipster
Sep 22, 2009 (5:25 pm)
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Replying to: obyone (Sep 16, 2009 1:09 pm)

When reading Jipster's reply was beginning to question my reading ability. Glad it wasn't me.
 
Maybe it's your poor grammar you should be questioning?

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