I stored some of my Tamiya, Testors, Delta Ceramcoat, Folk Art, acrylic paints in the garage. Well, they've been there for at least a year now. The garage isn't insulated, so the temperatures have spanned 20 degrees - 90 degrees F. Now I find the paints are not working, adhering well at all. My fault right? Freezing - high temps have ruined them? Just have to buy new paint?
What about my spray cans? Are they also ruined?