Single vs Double Glazing

Single glazed windows; in Sydney, you see them everywhere, not just in older buildings but even in the newer constructions that you see around residential and commercial areas. The clue is in the name – single glazing. This is a window made using on a single pane of glass. Meaning the only thing between your home and the outside world is a pane of glass.

A typical pane of glass used for a window ranges from 3mm to 10mm thick. Why is that a problem?

• Inadequate insulation – a single glazed window can be up to twenty times less efficient than an insulated wall when it comes to energy loss or storage. This means that the cold from the outside can quickly transfer to your home, and vice versa.
• Leading on from poor insulation (and therefore poor energy efficiency), single panes of glass often find themselves allowing energy leakage in other ways, such as drafts through poor seals or cracks.
• Not very secure – put simply, breaking a single pane of glass is quite easy, which doesn’t add to the security of any home.

Single glazing certainly served its purpose for a time when there weren’t any other options available. But in a culture that is conscious of saving energy to reduce carbon footprints, or simply the electricity bill, single glazing simply isn’t cutting it anymore.

DOUBLE GLAZING

Again the key is in the name; double glazing. Double glazing uses two panes of glass as opposed to a single pane of glass. Between these two panes of glass is vacuumed gap (filled with a dense gas called Argon gas, although you cannot see this gas), which then creates an insulated barrier between the inside world and the outside world. Sunlight, heat, sound, they can all pass through the gas, but it is this space that significantly cuts down the energy that is able to. Factory manufactured double glazed windows have been proven to be up to one hundred percent more energy efficient than their single glazed counterparts.

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