Steel and fibreglass both offer their own advantages when it comes to the construction of entry doors, including Modern Doors. Steel doors, for example, are a bit stronger and more durable compared to fibreglass. However, fibreglass doors are available in a wider range of colors and finishes and generally require less maintenance overall. It is best to speak with an exterior door expert to discuss your individual preferences. Window Mart is always happy to help sort through all the possible options, so you feel confident in your final entry door selection.