I've always had trouble in the winter trying to paint projects.
I heat my garage to a constant 15C all winter long. Its still chilly, and the floor gets cold. On really cold days, I have a propane construction heater to supplement the electric. For painting, I try to stay above 17C or so.
Spray bomb paints have always given me trouble. regardless of the temperature. Most times I can get a good first coat, except for my recent attempts with Tremclad Royal Blue, (sags way too much)
My biggest issue has been eggshell after the second coat, unless I let it cure for a couple of weeks.
My guess is the humidity (or lack thereof) is causing problems. Its dry as a popcorn fart here, and I don't have a humidifier in the garage.
Edited by Chopperhed, March 03, 2014 - 08:57 PM.