Automotive paint question
Automotive paint question
(OP)
What is a good way to determine porosity of dried paint? I have seen many cars with pimples in paint caused by entrapped water, either from the painting system or not properly dried water based paint, or from car covers that maintain moisture. I do not know what kind of paint or clear coat was used in any of the problem cars.





RE: Automotive paint question
Cheers.
RE: Automotive paint question
RE: Automotive paint question
Other example was a car deck lid that blistered in an area that might have had an extra water bath from a canopy that leaked on it. Close inspection showed that the lid was a repaint, no metal was visible when bursting the small pimples.
The pimples formed after a good freeze temps into the 15 deg F range. It could have been from the water bath or from incomplete water base paint drying, I don't know. Just saying it happens.
RE: Automotive paint question
And that is /everything/ I know about that.
Cheers
Greg Locock
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RE: Automotive paint question
RE: Automotive paint question
RE: Automotive paint question
RE: Automotive paint question
ASTM D6583 - 13
Standard Test Method for Porosity of Paint Film by Mineral Oil Absorption
RE: Automotive paint question
RE: Automotive paint question
Alkyds are never going to work in a continuous wet environment.
RE: Automotive paint question