our firm in So. Cal. has been painting fire hydrants for the past 7 months. Until recently the paints have been very good with good cover and great adhesion using Frazee 648 Aro-Plate synthetic gloss enamel. For the last two months we have noticed the paints have been getting thin and have flaking after a short time. Is the cold weather a factor or can we do something to make the paints as good as in the summer?