Paint recommendation on routed HDU

[CDC Inc]

What is the best practice when selecting paint for external HDU signs? What kind is generally used? We are able to spray with air, airless, or Turbine HVLP. Also would a clear topcoat be required or recommended? thanks

 

[visual800]

I use flat primer for 1st coat and then top with satin latex...please dont use crappy one shot stick with latex

 

[kcollinsdesign]

Acrylic polyurethane would be the professionals' choice.

 

[John_Smith]

I don't know how you or others here process their HDU before painting. But for me, just vacuuming and compressed air is not enough to get the sign completely free of dust. I take it outside and spray it really good with the water hose full blast to dislodge any lingering dust pockets. Then, either forced-air or vacuum it, or just let it air dry until the next day.
I've been using the FSC-88 WB primer from Coastal Enterprises for years. And for me, there is no substitute.