Some of the things to consider when shopping for double glazing for your home are safety, energy conservation, style, type of frame, type of glass, cost and installation. Each of these are important in your choice. Most will affect the price that you pay - and all will affect your pleasure and comfort in your home for years to come.
Safety
Single pane windows are most often made of a single sheet of regular glass which shatters into long, sharp shards when hit. When shopping for double glazing, you have a choice of several different kinds of glass, each of which are safer on breaking than traditional window panes. If nothing else, the double thickness reduces the chances that both panes will be broken. Whether you use security glass, toughened glass or shatterproof glass, double glazing offers some measure of safety over single glazing.
Security
There's no doubt that double glazing makes it more difficult for a thief or intruder to break into your home by the simple expedient of breaking a window pane and reaching through the hole - but real security has more to do with the window frames and locking systems than with the glass itself. Be sure to choose windows with frames that can be securely locked from the inside.
Energy Conservation
Double glazing can reduce heat lost through windows by as much as 50%, thereby reducing your heating bills, keeping your house warmer and helping you do your bit in the conservation of natural resources. Especially in rooms with large windows, the difference in temperature in the room is easily noticeable. Sitting by a large, double-glazed picture window is far, far more comfortable on a chill winter night.
Style and Design
Double glazing is available in many different styles and types, and most people attempt to match the style of their old windows with the new if at all possible, especially when doing restoration work. A good, reputable contractor will work with you to find double glazing windows that suit your architecture and enhance your home's beauty.
Frames
The three main frame types are PVCu, aluminum and wood, and each has its unique advantages and disadvantages.