Facts and Features of Double Glazing Windows

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Facts and Features of Double Glazing Windows


Double glazing windows have become increasingly common in modern homes, especially in the cold parts of the world. These windows are made from two panes of glass which are separated by an inert gas or a thin layer of air. They comprise of a drying agent that blocks any moisture from getting in between the panes before they are sealed airtight. The air or inert gas between the panes accounts for the insulation properties, which is a key feature of double glazed windows. Other than insulation, double glazing windows also prevent heat loss from a home and can significantly reduce noise pollution. They are also known as double glazed units, insulated glass units, and insulated glazed units around the world.

The u Value
The u value refers to the energy efficiency where lower values are better. Compared to single glazed windows, double glazed windows are much more energy efficient, but still fall behind other materials in a home like doors and walls. Single glazed windows have a u value from 4 to 6, while double glazed windows can have a u value of 1.6 to 3, depending on how new the windows are.

The materials that are used in making window frames can influence the thermal conduction performance of windows. Double glazing windows have frames that are made from aluminium, fibreglass, vinyl, and wood. The spacers, also known as cold bridges, are generally made from aluminium, foam, plastic, rubber, and stainless steel. Spacers bat are components in double glazed windows that separate the two glass panes. The space in between the two panes of glass can hold different gases. They generally include inert gases like argon and krypton and low cost air.

Application and Advantages

To begin with, there are various types of double glazing windows available today. Some of the common ones include:
Casement windows
• Single hung windows
• Double hung windows
• Awning windows
• Fixed picture windows
• Greenhouse windows
• Round and octagon windows
• Angle gable windows
• Gliders
• Bow and bay windows

All these types differ in design, components, and applications. But in general, double glazed windows can be installed in residential and commercial properties, industrial complexes, and recording studios among others. Double glazed windows are known for reducing heat loss, which is generally twice the amount compared to single gazed counterparts. Double glazing also prevents frost from forming during winter. They provide more security than single glazed windows as they are harder to penetrate. This accounts for their significant sound insulation and reduction in dampness.

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