If you are buying a wood door, it is important that you look for high-quality woods, exceptional detailing and a durable finish. A good rule of thumb to keep in mind is that the thicker and wider or the more intricate the moldings and carvings are, the better the door is.
Fiberglass and high-quality steel doors are ideal for the cold Iowa climate. These doors have a thermal break, which is an insulated separation that is designed to keep the heat and cold from conducting through the doors outer layer and the frame. A wood frame is typically used as an insulation separator for a fiberglass door.