Triple glazing cost guide

how much does triple glazing cost?

Triple glazing is fast growing in popularity, and it’s easy to see why. When the colder months creep in, that extra layer of insulation can make all the difference. But just how much does triple glazing cost to install?

Whether you’re building a new home from the ground up or thinking of replacing windows to keep your house cosy and the energy bills down, read on.
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What is triple glazing?

Triple glazed windows represent a notable upgrade from their double-glazed counterparts. Comprising three panes of glass filled with argon to form two sealed cavities, they offer superior energy efficiency, noise insulation, and security.

Homeowners often opt for triple glazing to mitigate heat loss, consequently reducing winter heating costs. While double-glazing was once considered innovative, older units pale in comparison regarding insulation efficiency.

Triple glazed windows excel in sealing heat within the home, promoting a warm and energy-efficient environment. Despite the higher initial cost associated with the extra pane and cavity, the long-term cost-savings make triple glazing a worthwhile investment for those seeking an economical and sustainable solution.

Cost of triple glazing

Naturally, the typical cost of triple glazing varies based on several factors, such as the quantity of windows and the dimensions of your property.


Triple Glazing Cost Estimates:

Property TypeNumber of WindowsAverage Cost (including installation and VAT)
Two-bedroom flat4£4,800
Two-bedroom terrace5£6,000
Semi-detached house8£9,600
Detached house12£14,400
Single Window1£1,200
Per Square Meter£1,200

*Note: These costs are approximate averages. For precise quotes, it is recommended to consult with a local tradesperson.

To illustrate, the installation of triple glazing on all windows in a two-bedroom terraced house with 5 windows is estimated to cost approximately £6,000. For a larger residence boasting 12 windows, the anticipated expenditure for the complete job would be around £14,400.

Factors affecting the total triple glazing cost

While the fundamental costs are influenced by the size of the property and the extent of the project, several additional factors can contribute to adjustments in the fees charged by window fitters. These factors may encompass:

  1. Accessibility: If the installation necessitates the use of scaffolding for window access, this consideration will be integrated into the provided quote.
  2. Location of Property: Contractors operating in urban hubs like London may adjust their prices to align with the heightened demand in such areas.
  3. Type/Style of Window: The pricing spectrum for uPVC casement-style triple glazed windows typically falls between £700 and £2,200. Opting for a window with a single opener may incur material costs ranging from £800 to £2,400.
  4. Colour of Frame: The choice of frame colour can impact costs, with white frames generally being more economical than woodgrain alternatives.
  5. Waste Removal: If the removal of old windows is part of the project, it’s advisable to discuss waste removal with the contractor and potentially have it factored into the overall quote.

These additional considerations ensure a comprehensive assessment of the total expenses associated with triple glazing installation.


Is triple glazing worthwhile?

Yes, triple glazing is worthwhile for many homeowners. Its three layers of glass with sealed cavities provide superior insulation, leading to energy efficiency, reduced noise, and improved security. While the initial cost is higher, the long-term savings on heating expenses often justify the investment. Consider your climate, property size, and budget for a tailored decision.

What is the average triple glazing cost per square metre?

The average cost of triple glazing per square metre is approximately £1,200. This figure serves as a general guideline, with actual costs varying based on factors such as the supplier, specific window requirements, and any additional features or considerations. It’s advisable to obtain detailed quotes from suppliers to ensure accurate pricing tailored to your individual needs.

What is the average triple glazing cost per window?

On average, a triple glazed window is priced at £1,200, whereas a window with double glazing typically costs around £1,000. These figures provide a useful comparison for those considering the insulation benefits and long-term savings associated with triple glazing.

Are there alternatives to triple glazing?

Yes, there are alternatives to triple glazing. Double glazing is a widely used alternative that consists of two layers of glass with a sealed space in between. While it may not provide the same level of insulation as triple glazing, double glazing still offers improved thermal efficiency and can be a more budget-friendly option.

Other alternatives include secondary glazing, which involves adding an additional pane of glass to existing windows, and various window films or inserts designed to enhance insulation.

The choice between triple glazing and its alternatives depends on factors such as budget, energy efficiency goals, and the specific requirements of your property. Consulting with a professional and considering your individual needs can help you determine the most suitable option.

Can triple glazing help reduce energy bills?

Yes, triple glazing can contribute significantly to reducing energy bills. The additional layer of glass and the sealed cavities in triple glazing enhance insulation, preventing heat loss from the home. This improved thermal efficiency means that during colder months, less energy is required to heat the interior, resulting in lower heating costs over time. While the upfront cost of triple glazing may be higher, the long-term savings on energy bills often make it a worthwhile investment for homeowners seeking to improve energy efficiency and decrease their overall heating expenses.

Can I install triple glazing myself?

Installing triple glazing is a complex task that generally requires professional expertise. While there are some DIY window installation kits available, triple glazing involves precise measurements, proper sealing, and ensuring airtightness, which can be challenging for an untrained individual. Improper installation may compromise the energy efficiency and security benefits of triple glazing.

It is advisable to hire a qualified and experienced professional for the installation of triple glazing to ensure it is done correctly and to maximise the benefits of the investment. This approach helps avoid potential issues and ensures the windows perform optimally in terms of energy efficiency and security.

Need more information?

If you have questions about triple glazing or are seeking cost estimates for your home, feel free to reach out to Chesterfield Window Centre at 01246 912106. They can provide valuable insights, answer your queries, and offer tailored information regarding the installation of triple glazing for your specific requirements.

Director at Chesterfield Window Centre | Website | + posts

In 2005, I founded Chesterfield Window Centre with a vision to redefine the window and door industry through a commitment to quality, innovation, and customer satisfaction. The journey began with a deep understanding of the market, identifying gaps, and envisioning a business that not only meets but exceeds customer expectations.

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