calling all paint experts what is this

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viper92086

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Jan 12, 2006
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everytime it rains and then the sun comes out i get these water marks that cannot be removed for days. what the hell is causing this and why does it only happen on my car? they usually dissappear after a few days in sunlight, but they are annoying. i've tried claybarring the car and it still has these lil water marks. this car is waxed once a season with nufinish. i think i switched over to mothers at some point but it didnt leave that nice silky feel so i stopped using it.

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figgie

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Mar 30, 2005
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Looks like the water is reacting with the clear coat.

you sure that the clear was hardened and reduced correctly when it was applied?

I have seen that issue before but usually happens with what I mentioned above.
 
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viper92086

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Jan 12, 2006
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Rennat;1102213 said:
the water magnifies the sun and thus burns whatevers underneath...

my g/f's dad got his out by wetsanding with like 800 grit and then repolishing...
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o man... that sucks i dont want to do that.. shouldn't wax help that problem out? should i try buffing it?


figgie;1102214 said:
Looks like the water is reacting with the clear coat.

you sure that the clear was hardened and reduced correctly when it was applied?

I have seen that issue before but usually happens with what I mentioned above.
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i have no idea, maaco did the paint, its a 1 stage. no clear or the clear is mixed in.





it sounds like i should just get the car repainted next summer from a good shop.. afterall i've been meaning to redo the whole car.
 
suprabad

suprabad

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Jul 12, 2005
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viper92086;1102218 said:
...maaco did the paint, its a 1 stage. no clear or the clear is mixed in.
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There's your problem.

Enamel paint is probably what they're using; because it's cheap and less labor intensive than 2 stage polyester/urethane base/clear. Unfortunately it's not nearly as durable as the 2 stage.

What you've got there is what's called "etching".
It happens when you let a water spot dry on the surface of the paint and the minerals in the water are left on the surface to eat away at the paint. You may not have to color sand, but you are definitely going to have to use a light compounding scratch remover to smooth that out and remove any remaining contaminants.

There may be a chance that it hasn't eaten into the paint yet (just left a mineral deposit on the surface), but based on the fact that you clayed the paint and it didn't fix it, I'd say probably not.
 
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viper92086

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suprabad;1102239 said:
There's your problem.

Enamel paint is probably what they're using; because it's cheap and less labor intensive than 2 stage polyester/urethane base/clear. Unfortunately it's not nearly as durable as the 2 stage.

What you've got there is what's called "etching".
It happens when you let a water spot dry on the surface of the paint and the minerals in the water are left on the surface to eat away at the paint. You may not have to color sand, but you are definitely going to have to use a light compounding scratch remover to smooth that out and remove any remaining contaminants.

There may be a chance that it hasn't eaten into the paint yet (just left a mineral deposit on the surface), but based on the fact that you clayed the paint and it didn't fix it, I'd say probably not.
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but the "etching" goes away eventually. it only appears where water is baked in the sun, then once i was the car and leave it in the sun again everything is good as new. would switching waxes to say zymbol (sp?) work? i was thinking of claying the car tonight then buffing it tomorrow
and throw on some nice wax before i leave on my trip
 
johnathan1

johnathan1

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Aug 19, 2005
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The wax you are applying really should protect the paint, and prevent "etching" from happening... I would try a better quality wax..."Nufinish" isn't gonna cut it. Meguiar's tech wax would be a good choice, and Zaino would be even better.
 
suprabad

suprabad

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johnathan1;1102255 said:
That stuff sound pretty gimmicky to me.
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It's patented; they don't give patents for gimmicks.

Trust me, this is the best protectant on the market. The navy uses it on their ships, and if it will hold up against salt water than it'll hold up against anything. Also, it gives an amazing shine, and your car stays clean since nothing sticks to it.

A bird shit on my car, and when it dried it literally just slid off the paint. Find me a wax that can do that.
 
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viper92086

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Jan 12, 2006
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well guys i just finished washing the car in dish soap and claybared the car. i still have the marks from this mornings rain so im gonna let it bake in the sun tomorrow and hopefully when i get back its gone. then i will proceed with some meguires tech wax
 
speed

speed

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Did you wash the car in direct sunlight or in the shade? Did you use a spray nozzle or let the water run out of the bare hose end?

The way I try and avoid watermarks is by washing in the shade, that way the water doesn't evaporate as quickly, and let the water run over the soap, it picks up more of it as it sheets off than if you spray it with a nozzle.
 
super.secret.supra.club

super.secret.supra.club

Supramania Contributor
Mar 22, 2007
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mostly, the spots are caused by the water drying up. doesn't really have to be in the sun. it does it in the shade as well but it looks worst when it happens under the sun. i've noticed this with a lot of the people's cars that come up to me asking me to fix it.

for one thing figgie is correct about the mixture of hardener and reducer. it doesnt have to be perfect but ball park at the very least.

these same thing happened to my friends hood after shooting it. i applied black magic wax on it after washing and it went away.

the best way to rid of this problem is to wet sand with 1500 - 2000 grit sandpaper and wax with 3m scratch remover. GL with your paint

ed.d.
 
I

iwannadie

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Jul 28, 2006
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suprabad;1102260 said:
It's patented; they don't give patents for gimmicks.

Trust me, this is the best protectant on the market. The navy uses it on their ships, and if it will hold up against salt water than it'll hold up against anything. Also, it gives an amazing shine, and your car stays clean since nothing sticks to it.

A bird shit on my car, and when it dried it literally just slid off the paint. Find me a wax that can do that.
Click to expand...

Lol, a patent doesnt mean anything. You can patent any gimmick you want. The patent office doesnt sit around and decide 'widget A really works, widget B is a gimmick'.

A patent just means noone can copy your widget. Check out http://www.crazypatents.com/for all kinda gimmicks.
 
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