My professional painter asked me to buy expensive Sherwin-Williams paint for the best effect on all my doors. She rolled on the paint, and then used a fine brush to paint it out, that is, to get rid of roller marks and the look of a rolled door. However, the paint dries so fast that she can’t brush easily; the paint rolls up into little balls. The paint costs 60.00 a gallon, and S-W said they never heard of this problem, which I find difficult to believe, since we had the same problem with Behr, Valspar etc. My doors have now got three coats of semi-gloss on them, with shiny brush marks, little balls of dried paint making little lumps everywhere, and I am considering just rolling them over so they will at least look consistent. My painter added Flo-trol to thin the paint so it wouldn’t dry as fast, it basically did nothing to improve the problem. I have been told this issue is due to low voc paint, but every paint I buy from anywhere is now low voc apparently. Lowes and Home Depot folks in my area are mystified as well. Any suggestions, other than my own…to just roll the doors and live with the effect, which my pro painter says she will not do, as rolled doors look terrible.