Fabrication Of Aluminium Window

3.2    TYPES OF MATERIALS USED IN REPLACEMENT WINDOWS
Window frames are available in a variety of materials including aluminum, wood, vinyl, and fiberglass.
3.2.1    ALUMINUM REPLACEMENT WINDOW
Aluminum windows are rarely used for residential purposes anymore but are common in commercial applications. The reason for that is builders are willing to give up heat loss/gain ramifications for the strength that is needed for large openings.  Aluminium windows are obviously made of metal, which is a good conductor of differences in temperature. Thus it is extremely cold outside that cold, (or actually absence of heat) Will be transferred through the aluminium into the residence. Conversely, if it is very hot outside that heat will also be transferred into the building.
3.2.2    VINYL REPLACEMENT WINDOW
Vinyl windows represent the largest portion of market share in the replacement window industry. There is a variety of reasons for this all of them contributing to make vinyl the preferred material for windows. Vinyl is a material that can be extruded which is an important attribute. A well built window frame will have a great deal of hollow areas to it. The reason for this is there needs to be adequate width to the frame in order to bridge the thickness of the exterior wall, for the sides top and bottom. If the window were made in a solid fashion it would be overly expensive, be incredibly heavy, and believe it or not would not present with insulating properties as good as air. In the manufacturing process the frame of a vinyl window is created by extruding raw vinyl into complex shapes and chambers to provide the necessary size and strength. Thus from a manufacturing process stand print vinyl works extremely well. Another aspect to vinyl is its ability to resist heat transfer. What this means is if it’s cold outside vinyl does a good job of resisting the heat inside your home from bring transferred to the outside. Conversely, if you are in a hot area, and are expending money keeping your home cool, vinyl will perform well by keeping that heat out, and the cool in. the only downside to vinyl is that there is a limitation on color selection. There are windows produced in different colors, but not all manufactures bother with that, primarily because of concerns regarding fading.
3.2.3    WOOD REPLACEMENT WINDOW
Replacement windows made of wood are a very popular choice of material. However, most of the wood windows sold, for replacement purposes, are actually, clad windows. What this means is the window has been covered, on the exterior only, with a material that is usually either vinyl or aluminium. The reason for this is to reduce the amount of maintenance needed to keep the exterior of the window in good shape. Wood, left to the environment will need periodic painting and eventually will degrade and begin to rot. By covering the window an impervious material, the window will be much better equipped to with stand rain, and the effects of damaging UV rays emitted by the sun. The question might be then why not just install vinyl windows and avoid all that the. The answer is many consumers prefer the aesthetic look of wood windows for the interior of their homes. In addition, even though the window may be clad, if will better resemble a traditional wood window for the exterior than a full vinyl product. It may surprise you to know that a high quality wood replacement window can very well be more expensive than a vinyl one. Many people assume that windows made of wood will be cheaper than those made of other man made materials.
3.2.4     FIBERGLASS REPLACEMENT WINDOWS
Fiberglass replacement windows are gaining market share and becoming more accepted by the buying public. Initial concerns over strength, resistance to extreme temperatures and frame construction have gradually been overcome. These windows are constructed out of fiberglass cloth and epoxy resins, similar to modern boat construction techniques. This results in a smooth, strong, finish that can be painted if the home owner eventually decides they wish to do so. With vinyl, generally speaking, the windows should not be painted and once installed your stuck with that color. There are a few f models available that is essentially a wood window that is clad with fiberglass, which could be a viable option for someone who really wanted the properties of fiberglass but wanted to retain a tradition wood look in the interior. Another factor to consider is fiber glass will lend itself to larger openings due to greater strength and stiffness properties than vinyl.