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Single Stage Urethane Question

SSuperDave

Veteran Member
Senior Member
In white, 3 coats or 4? I an't the best painter, and will probably have a lot of cutting to do.
Thanks.
 
In white, 3 coats or 4? I an't the best painter, and will probably have a lot of cutting to do.
Thanks.

That'll depend on a number of things:

1. Color of primer / sealer (you can get a white primer, but most use gray).
2. Quality of paint.
3. Quality of gun (volume of paint and atomization).
4. Temperature.
5. Technique.

When it comes to white, it's the hardest color to match, so painting the entire car is easiest.

If you take your time and use a slow reducer (if possible because of temperature), it gives the paint time to flow after it hits the surface.

When using a fast reducer, it's already drying before it hits the surface (usually causing the orange peel).
 
I've found Omni to be a cheap alternative in white, it covers well due to the lack of toners....and omni toners aren't good. I believe 3 will cover with omni, but I always use a spray out card, spray enough coats to hide, plus 1. Spray out cards are free at your jobber.
 
It will be a complete. I'm leaning towards 4 due to my level of expertise and how much sanding I may need to do. I'll be using PPG Concept.
 
PPG Concept is good material and covers well. We painted a 72 using that about 11 years ago. It was good after 3 coats. If you want to cheat it a little, use a light gray sealer. That's the only reason sealer color comes into play, trying to use less material. At 100% coverage, sealer color doesn't matter. Also, white is the most difficult color to shoot IMO, it screws with your eyes.
Try to shoot it at 70 degrees and use the slowest reducer/activator you can for it. And above all, make sure it is fully flashed before you go to the next coat. Check the gun spray patter against a piece of cardboard. I like shooting at 26-28 psi w/trigger pulled (gun regulator) and 70 at the wall regulator.
 
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