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Base-Coat is Blushing

Barry

Paint Fanatic
Staff member
#1
Base coat getting white areas:
I had two calls yesterday where painters were shooting base coat both very high-grade bases and they were getting white areas from 2- inch to 18-inch streaks. Both places said been raining non-stop.
As this is not real common with base coats like it was in the lacquer days it can happen and neither painter has had this happen before.
The fix is simple, use a slow reducer and do not hammer the base on, a medium coat will work best.
Also, more flash time between coats in the 30 to 45 minute range will also help to solve the problem.
The one painter had a bake booth so told him to also turn on heat to get rid of the humidity
 
#6
I swore I had some blushing the other day, it was so weird. The silver would look fine as sprayed, but 15 minutes later it looked like a blotchy milky mess. Standox guy said "impossible," like so many of the problems I have. I apparently do the impossible every day, lol. Their extra slow reducer fixed it, btw.
 

jlcustomz

evil painter
#7
I ran into a few types of blushing issues with wood entrance doors earlier this year that I never ran into before,even having painted numerous items during rain outside of a proper area in years past with automotive paint. Also painted several car parts late into the night in open covered areas, never a blushing issue.
One area of 1 wood door repeated an issue in a same area, which was obviously from the wood, not relevant here. Showed up after everything was done & should have been all good, both times. 2nd time was after door was installed at customers house for several days.

On another I started seeing a little blushing after spraying a sanding sealer coat of intercoat clear on a cherry wood door. Blushing was where I was really a little thicker than ideal, such as near edges where film piles up and where spray gets overlapped extra around wood panels. So that is exactly whats relevant here. Later did a little experimenting with leftover matte clear in various ways trying to achieve blushing. On a table saw blade, I sprayed 2 heavy coats almost back to back, near zero flash time. In a few spots neat saw teeth film thickness got near 1/32" & it's still clouded in those tiny areas now. So that proved overly thick without conditions to take care of it will damn sure blush, eliminating wood as a source there.

So, thought I was done with blushing issues for a while. The Cherry door I just mentioned ended up getting stored for about 2 months. On a fri pm, I get a call that it's getting installed Monday & has white streaks near several edges on one of the 2 sides. Ended up working sat & sunday to strip the entire side down to bare wood & start over. In a text to Barry the following week, he mentioned one of the causes would be covering it up. Well, our warehouse guy not only had a tarp draped over the offending side, which was probably ok, but had a stack of solid doors leaning tight against it for several weeks, smothering 1 side. DAMN....Not my fault at all last time , but definitely was my problem to fix.

Live & learn, & people sometimes wonder why we can be picky about what they do with our work.
 
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Barry

Paint Fanatic
Staff member
#8
I swore I had some blushing the other day, it was so weird. The silver would look fine as sprayed, but 15 minutes later it looked like a blotchy milky mess. Standox guy said "impossible," like so many of the problems I have. I apparently do the impossible every day, lol. Their extra slow reducer fixed it, btw.
Your Standox guy should try and get out more!!!! LOL
In all fairness most don't know as company's are not teaching them or even mentioning it.
 
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