The typical single front door, decorative doors with sidelights, and double doors are all options to give your abode the ultimate curb appeal. Ranked in the top 3 most important things to replace for resale, the entry door is an all important fixture that sets the mood and tone of the entire house. Fiberglass, iron, and steel are all materials you can choose from and a sliding glass patio door provides decorative influence and an easy way to access your yard or let your furry members of the family free for a while.