Modern fiberglass entry doors are highly customizable, withstand severe weather conditions better than other materials, and have good insulating properties. Quality fiberglass doors are visually indistinguishable from wood doors, but are far more durable.
Fiberglass doors handle heat and humidity, as well as extremely cold temperatures, without warping or rotting. They require minimal maintenance, and do not need to be painted or refinished as they age, yet are easy to paint for a new look if the homeowner wants a change. Although fiberglass doors cost more than standard wood, steel or vinyl doors, they are cheaper than fine wood doors.