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Double Glazing: How Much Will It Really Cost You?​

Quick Overview: Double Glazing Costs and Benefits

  • Cost Range: Installing double glazed windows in Australia varies, with prices ranging from $150 to $1,500 per square metre. This range accounts for differences in pane materials, frame types (aluminium, timber, UPVC), and installation complexities.
  • Single vs Double Glazing: Double glazing generally cost 40-50% more than single glazed windows, but offers superior insulation compared to single glazing, leading to an average of 25% energy savings over time.
  • Long-Term Benefits: Beyond immediate comfort and energy efficiency, double glazed windows contribute to a home’s value and sustainability. They can reduce energy bills, especially in regions with extreme weather, and may qualify homeowners for government incentives aimed at promoting energy-efficient upgrades.
  • Customization Options: Homeowners can choose from various frame materials and additional features (like UV protection or noise reduction) to tailor the installation to their needs and preferences.

This guide provides a detailed breakdown of costs, benefits, and considerations to help you make an informed decision on upgrading to double glazed windows.

In This Article:

Thinking of upgrading your windows to double glazing? Great choice! Double glazing not only boosts your home’s comfort and energy efficiency but also adds value to the property. But understanding the costs can be tricky. This guide breaks down everything you need to know, making it easier to navigate the numbers and make the best decision for your home.

Key Costs for Double Glazing:

  • Panes: The heart of double glazing, with prices ranging from $150 to $220 per square metre. Replacing existing panes is a budget-friendly option.
  • Frames: Aluminium is popular for its affordability and sleek look ($150-$1,250 per sqm). Timber offers classic beauty and superior insulation but comes at a steeper price ($800-$1,500 per sqm).
  • Labour: Installation costs can vary from $90 to $150 per hour, depending on complexity and location.

Cost Overview

Installing double glazed windows in Australia can vary significantly in cost, typically ranging from $150 to $1,500 per square metre. This wide price range is reflective of several variables, including the choice of materials, the size of the windows, and specific requirements of the installation process. At the lower end of the spectrum, homeowners might encounter costs around $150 per square metre, primarily for replacing panes in existing frames.

Conversely, the higher end of the cost range, up to $1,500 per square metre, is often associated with bespoke solutions, such as custom-designed timber framed windows or advanced features like enhanced UV protection or superior noise reduction capabilities.

The choice between merely replacing the panes or opting for entirely new window units also plays a pivotal role in determining the overall cost. Replacement of panes alone can be a more cost-effective solution for those on a tighter budget, while investing in new window units might offer better long-term value through improved energy efficiency and aesthetics. Understanding these cost components is essential for homeowners to align their choices with both their budget and their home’s specific needs.

Cost Breakdown by Components


The most basic element of double glazing installation is the pane itself. Costs for double glazed panes typically range from $150 to $220 per square metre. This option is ideal for homeowners looking to upgrade existing windows. By retaining the current frames and replacing only the glass, this approach offers a more budget-friendly route to achieving the benefits of double glazing.

Labour Costs

The cost of installation is a significant component of the overall expense. On average, labour costs for installing double glazed windows range from $90 to $150 per hour in Australia. These rates can vary based on the complexity of the installation, the accessibility of the windows, and regional differences in labour charges. For instance, installations that involve custom-sized windows or working at heights may incur additional costs. It’s important for homeowners to factor in these labour costs when budgeting for their window installation project.

Frame Material for Double Glazing

Price Range ($/sqm)$300-$1,250$800-$1,500$250-$800
AestheticsModernClassic, naturalVaried (modern to traditional)
Additional FeaturesThermal breaks, tintingUV protection, noise reductionTinting, some noise reduction options
ProsAffordable, lightweight, low maintenanceExcellent insulation, natural beauty, superior soundproofingAffordable, low maintenance, good insulation, diverse aesthetics
ConsPoor conductor of heat (can transfer heat in extreme weather), prone to condensationHigh maintenance, more susceptible to rot and warpingCan be prone to scratches and discoloration over time

Comparison with Single Glazed Windows

One critical aspect homeowners consider when investing in double glazed windows is how they stack up against single glazed alternatives. Typically, single glazed windows are less expensive upfront. However, double glazed windows offer superior insulation, leading to significant energy savings over time. This means that while the initial investment is higher for double glazing, the reduction in heating and cooling costs can offset this over the years, making them a more cost-effective option in the long run.

Additional Factors Influencing Cost

Several other factors can influence the final cost of installing double glazed windows:

  • Size and Number of Windows: Larger windows or a higher number of windows will naturally increase the overall cost.
  • Additional Features: Special features like UV protection, tinting, or noise reduction technology can add to the cost but provide additional benefits.
  • Geographical Variations: Prices can vary across different regions of Australia. Factors such as local climate conditions, transportation costs, and regional economic factors can influence the final price.
  • Installation Challenges: Complex installations, such as those in older homes or buildings with unique architectural features, can increase the cost due to the additional labour and customization required.

Expert Tip - Long Term Financial Benefits

Despite the initial cost, double glazed windows are an investment in the energy efficiency and comfort of your home. By providing better insulation, they can significantly reduce energy bills, especially in extreme weather conditions prevalent in various parts of Australia. Additionally, they can enhance the property’s value and have environmental benefits by reducing carbon footprint. In some cases, homeowners may also be eligible for government incentives for installing energy-efficient windows, further offsetting the initial costs.


Investing in double glazed windows represents a significant decision for any Australian homeowner. While the initial costs, ranging from $150 to $1,500 per square metre, might seem daunting, it’s important to consider the long-term advantages. These include substantial energy savings, increased property value, and enhanced living comfort. The choice between different types of frames, such as aluminium or timber, and additional features like UV protection or noise reduction, allows homeowners to customize according to their preferences and budget.

Understanding the various cost components, from pane prices to labour costs, empowers homeowners to make informed decisions tailored to their specific needs. Although more expensive than single glazed windows, the long-term financial and environmental benefits of double glazing are undeniable. With energy costs on the rise and a growing emphasis on sustainable living, the investment in double glazed windows not only makes economic sense but also contributes to a greener future.

In conclusion, double glazed windows are not just an expense; they are an investment in the future of your home. By carefully considering the factors outlined in this guide, Australian homeowners can enjoy the myriad benefits of double glazing, making it a wise and sustainable choice for their homes.


Picture of Khalil Chahine
Khalil Chahine

Khalil is the owner of Splendid Window Glass Repairs and has over 8 years experience as a glazier specialising in window glass repair, replacement and installations. Khalil takes great pride in his work and prides himself on providing an excellent service to all of his customers, no matter how big or small the job may be.