Homeowners who are adding to, or building a house, face an unprecedented profusion of options. A single but key choice among these is the type of front door to put in. The design of the construction of a house is strongly biased by the main door.

The modern homeowner is lucky to have bordering on an inexorable number of options in picking the type of front door. One of these concerns the building material for the door, of which there exists three basic kinds: steel, wood and fiberglass. Steel doors have natural protection against humidity or high temperatures, and therefore are an excellent choice. Steel doors become scratched easily, and have the unfortunate property of transmitting heat. If the day is too warm, the steel door gets warm to the touch. On a cold day, indoor warmth can be transmitted and radiated to the exterior via the steel door. The second type is a wood door. Not surprisingly, a door made of wood slowly will display a lot of use, from scuff marks to cracks. Wood also contains cellulosic chemical bonds that are easily broken down by certain wavelengths of light. Sanding can repair superficial defects, but there may be no method to deal with structural major damage like warping. Homeowners worried about such problems can instead go for a fiberglass door. While there is no argument that wood provides a classy image, these days the appearance of wood can be approximated with fiberglass placed using high quality construction methods.

The nature of fiberglass is apparent from its name: How to construct great arguments fine fibers of glass entangled together, glued by resin, and amalgamated to create various shapes. One of the materials, glass, can exist in both soft and hard states at hot and cold temperatures respectively. When solid, it is a transparent, brittle substance made of non-crystalline silicon-oxygen molecules. To get to its unique filamentous shape, glass can be extruded into narrow threads, which makes it easy to be manipulated and forged into any shape wanted. Addition of plastic resins helps bonding the glass filaments. Even though generation of very fine glass fibers is an ancient skill, only in recent times have individuals thought to manufacture composite substances by mixing glass with plastic epoxies. The outcome of the process is a substance with properties of both glass and plastics, simultaneously tough and malleable so it resists compression and extension.