Windows play a huge role in the efficiency of your home, however they can also be a big source of unwanted heat gain and loss. Improving the efficiency of your windows with double glazing has many benefits so let’s take a look at exactly what double glazing means, and the many advantages it will bring to your home.

What Are Double Glazed Windows?

Double glazed windows are made from two panes of glass that are separated by a layer of air or gas and then sealed. The sealed space acts as a break between the inside and outside pieces of glass.

Double glazing works by trapping air between the two layers. Glass is a good conductor of heat, which means heat transfers straight through your windows without double glazing. On the other hand, air is a poor conductor of heat, so the trapped air sets up insulating protection between the cool air on one side and the warm air on the other.

Single Glazed Vs Double Glazed Windows

A single glazed window is made using one pane of glass so this means the only thing between your home and the outside temperature is a single pane of glass, and this won’t give much insulation. A single glazed window is not very efficient when it comes to heat loss or gain. Double glazed windows use two panes of glass with a vacuumed air gap between them which creates an insulated barrier. Double glazed glass may be laminated or tinted, but otherwise is similar in appearance to a single glazed window. If energy efficiency and insulation against temperature and noise are what you’re looking for, double glazed windows are definitely the better option.

The Benefits of Choosing Double Glazed Windows


Significantly reducing heat loss and gain means it is easier to maintain the temperature inside your house. Double glazed windows are more effective insulators than single glazed windows, as they help to stabilise your home’s temperature and provide insulation from the full effects of temperature extremes. Reducing heat loss and gain will keep your home cooler in summer and warmer in winter.


Double Glazing will significantly reduce the costs of heating and cooling and will help improve the energy rating assessment of your home. Almost half the energy used in Australian homes goes to powering heating and cooling systems, double glazed windows will reduce the need for you to crank up the air conditioner or heater levels to reach a comfortable temperature so you end up using less electricity. The high efficiency of double glazed windows can reduce your heat loss or gain by up to 30% when compared to single glazed windows, significantly reducing your electricity bill.


Double glazing can help achieve a major reduction in the level of noise that enters your home. The space between the two glass panes in double glazed windows doesn’t just insulate from temperature extremes, it also provides great insulation from external noises. With double glazing, the space between the glass panels absorbs more sound energy. This is especially helpful for those who live near airports, have neighbours with noisy pets, or reside in the busiest areas in the city.


Many homes have a problem with condensation, especially in bathrooms. Condensation occurs when the moist air inside the home is exposed to a cooler surface such as a single glazed window. While condensation is mainly just an annoyance, it does have the potential to cause serious problems, such as mould. Double glazed windows help reduce the likelihood of condensation by removing its main cause, a cold window. The interior glass pane stays close to room temperature, reducing the condensation risk.


Double glazing of windows can improve both safety and security in your home. The thickness means they are harder to break than normal windows so they are much safer if you have small children, and also make break-ins a whole lot harder for would-be thieves.

Double glazed windows have many advantages. Open Windows and Doors is Perth’s leading supplier of premium double glazed aluminium windows and doors. Contact our experienced team today or visit our Canning Vale showroom to discuss the many benefits of installing double glazed windows in your home.