How much does double glazing cost?

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Price guide

$150 - $1,500







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Double glazing windows, from the name itself, is a type of window with double glass materials for better temperature control, unlike its singular counterpart. It's commonly used in countries with colder climates, as it can add insulation to a home or a building. In Australia, double glazed windows cost anywhere from $150 to $1,500 per square metre. 

If you want better temperature control during summer or winter, then it's time to invest in this home must-have. Read on to know how much double glazed windows cost.

Price list for double glazing windows

The cost of double glazed windows varies mainly on the size of the window if you only need replacement. Check out the estimated cost for the common glazing jobs. 

Type of glazing 

Average cost


$150 to $220 per square metre

Secondary glazing

$400 per square metre

Aluminium-framed double glazed windows

$150 to $1,250 per square metre

Timber-framed windows

$800 to $1,500 per square metre

Double glazing doors

$1,500 to $3,000

Glazier rate

$70 to $90 per hour

close-up photo of a double glazed window with snow

Factors that affect the cost of double glazing

Hiring a glazier who has a professional experience for the job is crucial since this entails working with glass and gas. Here are some variables that influence the overall costs of double-glazing. 

Type of glazing

If you have an existing window, you can add secondary glazing, an economical way to improve your windows' heat retention and strength. 

On the other hand, retrofit double glazing is the best option to replace your existing single glazing with a new double glazing system. Replacing windows with double glazing entails a higher cost, so retrofit glazing is a more affordable option that is inconspicuous and quick to install. 

Type of window

Complicated or extra-large windows will increase labour costs. Typically, simple single- or double-paned windows cost less than lovered, bi-fold, or other multi-paned windows. You can order or have smaller panes cut by hand for your customised window if necessary.

See also: How much do new windows cost?

Energy Efficiency Rating (EER)

Do you want a better energy efficiency rating? Choosing an eco-friendly option can increase the cost of your window. But this will help lower your electricity bills in the long run. If your priority is to double-glaze your window to reduce heating and cooling costs, then it’s best to invest in windows with high EERs.


Another factor to consider is the cost of the new window frame. For instance, timber is more expensive than composite or aluminium double-glazed windows. Wood frames entail higher costs since you will need a carpenter to use them. 

If you ever need to have your double-glazed windows fixed, you can find a glass professional to repair them instead of installing new ones. 

a newly installed double glazed window


Is your window difficult to reach? Your glazier may need special equipment or scaffolding to install or replace your windows. That's why a two-storey home will usually cost more than a one-storey home, even if they have similar windows.

Installation costs

How are your window openings? Are they in good condition? If there is a need to restore the opening before a glazier can replace or install a window, hiring a carpenter should be added to the overall costs. While you’re at it, perhaps it’s a good time to update the look of your interiors if new windows are put in. 

See also: How much does window replacement cost?

Post a task to hire a double glazed windows specialist

Now that you know how much it costs to double-glaze a window,  you can hire a double-glazing specialist for this project. In just a few steps, you can quickly connect with a nearby Tasker and have your window glazing updated. Here are some details you can mention in the request form to ensure you get a more accurate cost estimate:

  • Your location and preferred schedule
  • Window opening condition
  • The preferred double-glazing option
  • Additional services you might need

Ensure your windows get the right glazing application with the help of a professional. Post a task for double glazing and talk to reliable Taskers in a few hours. 

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Since it improves the effectiveness of your heater or air-conditioning, these windows can help you save on electricity bills. Regular windows usually have no insulation. The air pocket in double-glazed windows provides this energy-saving property. 

It depends on the size and complexity of your window. On average, each window takes around 1-3 hours to install.

Yes, it is considered an investment and can boost your property’s value. Resale values can go up to a 2% increase. 

Yes. Aside from insulation, it can also reduce noise pollution from entering your home. This is especially helpful for homeowners in urban areas with loud traffic noises.

Yes, but it depends on the condition of your current window and window openings.

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