Answer for Exterior primer without a topcoat.

It will surely fail from weather conditions, fading, peeling etc… probably in a short time (1-2yrs)… wash it in the spring (by hand with TSP and rags) and finish with a top coat, no extra priming required… BTW most factory painted vinyl trim does not really need any priming before top coating, just one heavy coat of High Quality Finish Exterior Grade House Paint (oil or acrylic), applied correctly… but now that you have already primed it… oh well…

  • By MagicDave
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