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Unformatted text preview: Steel Door Garages By Zainab Amir Conventionally, garage doors had always been made out of wood. However, slowly but surely wood stopped being used as it could easily be damaged by the sun or rotted by the rain. Due to the hassle with the amount of maintenance that was required innovators went to work, developing a new type of garage door. In the 1970s, steel was becoming quite popular, so galvanized steel garage doors became quite common. Steel was not as good an insulator as wood, but it absolutely was more resilient and two steel doors positioned together could provide as much of insulation as a wooden door. Hence, most garage doors during the 19 th century used two steel plates around a layer of Styrofoam providing polystyrene insulation. Garage doors then became warm and durable. In the current era, steel garage doors are the most predominant type of doors. They come in with many typical features and sizes, and with several shades out-of-the-box at relatively low costs. Steel garage door is one of the very out-of-the-box at relatively low costs....
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This document was uploaded on 10/27/2011 for the course BBA MG221 at NUCES - Lahore.
- Summer '10