I painted a new exterior in October. Around Christmas as we were finishing the interior, the general contractor and homeowner notice white deposits on the exterior. A few weeks later we cleaned these spots with a tsp solution and power washed, within a week the spots were back. I went last week and there are more deposits. The house is painted with a dark burgandy semi gloss from Ben Moore (two coats) and primed with Sherwin Williams 102 primer. It was not too cold when we painted or too humid. I have never seen this problem and have been in the buisness since I was a tottler, its the family buisness. I think it is frosting, considering the deepness of the color. The solution would be to clean, prime with oil, and repaint. The problem here is cost and responsibility. Have any of you ran into this problem before? How did you solve it? Thanks in advance for the help.