Hello,

Is it okay to paint directly over a 2K primer (PPG NCP280) that has been sanded with 500grit? I am getting ready to paint a metallic base coat clear coat (PPG DBC/DCC). I've done so much work to get the primer blocked flat with no stratches < 500grit that I don't want to risk the sealer running or adding orange peel. Is this reasonable? What are the +'s and -'s?

Regards

CurtiSS 69

Sand it with at least 600g and you will be fine.

400 to 600 is fine. We usually go 400 then a quick 600 acrross the grain. You may find the paint company will not like 600 grit for adheasion purposes, but if it is a metalic, you will be happy. We do not use sealer. Every sealer I ever tried went on to peely and makes the base cobly and ruins ultimate depth of the finish

What I hear is to use another coat of epoxy as a sealer before paint because it is water proof. Primers, base, clears are only water resistant.

Wow,

Thanks for the responses. I have about 180 hours on the body I just hate the idea of covering it with a sealer that could screw up.

Regards

CurtiSS 69

You and me both. I'm doing another car and laying the color right over the primer. Cut in so far and it looks good. :hurray:

I agree. A sealer is not necessary. If a sealer is applied properly, it should smooth out enough so as not to effect the smoothness of the basecoat. I use PPG myself and have done both. I have used sealer only when I was painting over a previous paint job. Good luck on your paint project.