Paint issue.. repair options?

[oman33]

I bought this 84 325E about a year ago and it's always had this issue with its paint where whenever it gets wet it develops white marks. Although it looks like water residue left over, its actually stains on the paint that can't be buffed out. The paint issue is only on the roof, hood, and trunk but the sides of the car don't have the problem. It has been repainted (poorly) at some point, did they just forget to clear coat these parts? I've heard that wet sanding and then clear coating the problem areas is the best bet but i'm not sure.... thoughts?

[IMG][/IMG]

[oliver.r]

Clear coat is aging an beginning to fail.
I would recommend refinishing the upper panels of the vehicle
Doing just a clear coat will not solve the problem.

Surface needs to be sanded and prepped for paint.
Panels being refinished should be checked for cracking
Primer sealed
Base coat (color)
Clear coat
Color sand and buff

[Mr. Tasty]

Clear coat is aging an beginning to fail.
I would recommend refinishing the upper panels of the vehicle
Doing just a clear coat will not solve the problem.

Surface needs to be sanded and prepped for paint.
Panels being refinished should be checked for cracking
Primer sealed
Base coat (color)
Clear coat
Color sand and buff

Don't listen to this guy. Your car is single stage and by the looks zinnoberrot. There are several types of water marks. They best you can do is keep a good sealant and wax on the car at all times. That's what I have on my Single stage zinno

[Steven Dziedzic]

Sure thing

[Mr. Tasty]

Sure thing

nice post douche

[bmwstephen]

Don't listen to this guy. Your car is single stage and by the looks zinnoberrot. There are several types of water marks. They best you can do is keep a good sealant and wax on the car at all times. That's what I have on my Single stage zinno

but this simply masks the solution correct? is there no permanent solution?

[nrubenstein]

Don't listen to this guy. Your car is single stage and by the looks zinnoberrot. There are several types of water marks. They best you can do is keep a good sealant and wax on the car at all times. That's what I have on my Single stage zinno

Repainted cars are often clear coated, so we have no idea whether or not that thing is still single stage.

That said, I would not expect a permanent solution short of new paint.

[Mr. Tasty]

Repainted cars are often clear coated, so we have no idea whether or not that thing is still single stage.

That said, I would not expect a permanent solution short of new paint.

there is a difference between water marks on a single stage and clear coat. The water mark damage appears to be on a single stage.

[Mr. Tasty]

but this simply masks the solution correct? is there no permanent solution?

nope, one of the down falls of single stages.

[bmwstephen]

nope, one of the down falls of single stages.

so when people tell me that they can fix it by cutting, buff and polish out oxidation. is the oxidation pretty much throughout every layer of the single stage paint?

[Mr. Tasty]

so when people tell me that they can fix it by cutting, buff and polish out oxidation. is the oxidation pretty much throughout every layer of the single stage paint?

Oxidation for clear coats vs single stage are different. You can use a very light compound for single stage and make a load of a difference. Generally, you want to use the least cut for single stage, as it implies, is just a layer of paint. The pads used with cutting will turn the color of your paint, in your case red.


Oxidation for clear coats are usually more stubborn, and most of the time irreversible.

[Mr. Tasty]

http://www.autogeekonline.net/forum/how-articles/29134-how-remove-water-spots-hand.html

I personally love this site as a detailer. That link will give you a general idea of the types of water spots and how to get rid of them.



edit: just realized you aren't the original poster


this is my recently cut single stage zinno

[bmwstephen]

but just to be clear. if a single stage is oxidized, once it is compounded, is that solution permanent or is the deterioration "skin-deep" to the point it can only be masked by regular detailing. I guess that's what I'm asking

[Vivek]

Isn't all zinno cleared? And brillantrot is single stage?

but just to be clear. if a single stage is oxidized, once it is compounded, is that solution permanent or is the deterioration "skin-deep" to the point it can only be masked by regular detailing. I guess that's what I'm asking

It's not permanent. It will oxidize again, but wax (and sealants) can help to greatly slow it down.

Oxidation on clear coat also comes back...but it can definitely be fixed so long as the clear isn't peeling.
Ex:

[bmwstephen]

vivek,

in your experience fixing single stage, will the level of oxidation return at a rate faster than if it the paint was freshly painted from the factory