Steel doors are low maintenance. Typically a wood door needs to be painted as frequently as the wood trim on your home due to weathering.
Clopay steel doors have longer warranties than wood doors.
Steel doors can be insulated, making them far more energy efficient than wood.
Clopay steel doors are pre-painted and most are available in your choice of three to five colors. Wood doors are unfinished or primed, both of which need to be finish painted upon installation.