Seasons wreak havoc on a home's exterior. In fact, Americans spend over $4.8 billion annually on maintenance services. Spring is the ideal time for homeowners to plan the repainting of their homes. The exterior of your home is the first impression you give the outside world and a good paint job is critical to your home's appearance. ... shade on a bright day. Painting in the sun can cause the paint to dry too fast and blister. Brush first, then roll. Paint the trim last.