How Much Does Double Glazing Cost in the UK? Your Complete 2025 Guide

Introduction

Considering an upgrade to your home with new double glazing? It's a fantastic investment that can significantly improve your home's energy efficiency, comfort, security, and even its market value. But before diving in, one of the most common questions homeowners ask is: How much does double glazing cost?

At Riverside Bifolds, we believe in transparency. This comprehensive guide will break down the key factors influencing double glazing prices in the UK, helping you budget effectively and make informed decisions. We'll cover everything from material choices like uPVC and aluminium to the impact of different glass types and even the colours you choose.

Understanding Average Double Glazing Costs

The cost of double glazing can vary significantly depending on a range of factors. It's not a one-size-fits-all price. However, to give you a starting point, a single double-glazed window in the UK typically ranges from £450.00 to £850.00 For a full house installation, you might expect to pay anywhere from £5200.00 for a smaller property to £8500.00 or more for larger homes with multiple windows and doors.

These figures are averages and can fluctuate based on:

• The number and size of windows
• The style of window (e.g., casement, sash, tilt & turn, bay, flush casment)
• The chosen frame material
• The type of glass unit
• Installation complexity and regional labour costs

Key Factors Influencing Double Glazing Costs

Let's delve deeper into the elements that will shape your final double glazing quote:

1. Material Matters: uPVC vs. Aluminium

The frame material is one of the most significant cost differentiators.

• uPVC Double Glazing Cost: Unplasticised Polyvinyl Chloride (uPVC) remains the most popular and often the most cost-effective option for double glazing in the UK. It offers excellent thermal efficiency, is low maintenance, and comes in a wide array of styles.
  • Average uPVC Window Cost: Expect to pay around £450.00 to £850.00 per uPVC casement window, including installation. Prices for more complex styles like uPVC sash windows might range from £1000 to £1500.
  • Pros: Highly energy-efficient, affordable, low maintenance, good noise reduction.
  • Cons: Thicker frames compared to aluminium, some colour options can be more expensive.
    
• Aluminium Double Glazing Cost: Aluminium windows are a premium choice, known for their sleek, contemporary aesthetics, exceptional strength, and slim sightlines that maximise natural light. While initially more expensive than uPVC, their durability and lifespan can offer long-term value.
  • Average Aluminium Window Cost: An aluminium casement window typically starts from £700.00 and can go up to £1200 or more, including installation.
  • Pros: Modern look, incredibly strong and durable, slim frames for larger glass areas, recyclable.
  • Cons: Higher initial cost than uPVC, can be less thermally efficient without thermal breaks (though modern aluminium windows are highly efficient).

2. Glass Type: Double Glazed vs. Triple Glazed

The glazing itself plays a crucial role in both performance and price.

• Double Glazing: This is the standard for most modern homes, consisting of two panes of glass separated by a sealed gap filled with inert gas (like argon). This creates an insulating barrier.
  • Cost Impact: Standard double glazing is included in the average window costs mentioned above. It provides excellent insulation and noise reduction for most UK homes.
  • Energy Savings: A-rated double glazing can save you around £150.00 annually on energy bills.
    
• Triple Glazing: For superior thermal and acoustic performance, triple glazing features three panes of glass with two sealed gas-filled gaps. It offers even better insulation and noise reduction.
  • Cost Impact: Triple glazing is generally 10-50% more expensive than double glazing. A uPVC triple-glazed window might cost approximately £800.00
  • Energy Savings: While offering enhanced performance, the annual energy savings compared to high-performance double glazing are often marginal for the UK climate (around an additional £300.00 per year). The return on investment for triple glazing may take longer to materialise.
  • Consider When: You live in a particularly noisy area, have a very exposed home, or are aiming for the absolute best energy efficiency ratings (A++).

3. Colour Choices: Adding to the Aesthetic

While often overlooked, the colour of your window frames can also affect the final price.

• uPVC Colours: Standard white uPVC is usually the most affordable. However, uPVC offers a vast range of foil colours and woodgrain effects that can mimic the look of timber.
  • Cost Impact: Choosing a coloured uPVC frame, especially a dual-colour option (different inside and out), can increase the cost by 20%-30% compared to standard white. Popular choices like grey, black, and cream tend to be readily available.
    
• Aluminium Colours: Aluminium frames are powder-coated, offering a durable and consistent finish.
  • Standard Colours: We typically offer white, black, and grey as standard options for aluminium, which are included in the base price. These are highly popular and suit a variety of architectural styles.
  • Custom Colours: While less common for standard windows, bespoke RAL colours are available for aluminium if you require a very specific shade, which would incur an additional cost.

Other Factors That Influence Double Glazing Costs

Beyond the core elements, consider these additional points:

• Window Style: As mentioned, different window styles have different manufacturing complexities and therefore varying price points.
• Window Size: Larger windows naturally require more materials and can be more challenging to install, increasing costs.
• Number of Windows: Replacing multiple windows at once can sometimes lead to economies of scale from installers.
• Hardware and Features: Specific handles, locking mechanisms, trickle vents, or integral blinds will add to the overall cost.
• Installation Complexity: If your property requires significant structural alterations or has difficult access, labour costs may be higher.
• Supplier and Installer: Prices can vary between different companies. Always obtain multiple quotes and ensure your chosen installer is reputable and certified.

Is Double Glazing a Worthwhile Investment?

Absolutely. While the initial outlay can be significant, the long-term benefits of double glazing far outweigh the costs:

• Reduced Energy Bills: Improved insulation means less heat loss in winter and better heat retention in summer, leading to noticeable savings on your heating and cooling costs.
• Increased Property Value: New, energy-efficient double glazing is a highly desirable feature for prospective buyers, potentially adding 5-10% to your home's value.
• Enhanced Comfort: Say goodbye to draughts and cold spots. Double glazing creates a more stable and comfortable indoor environment.
• Noise Reduction: The sealed units significantly reduce external noise pollution, making your home a more peaceful sanctuary.
• Improved Security: Modern double glazed windows come with robust locking systems, deterring intruders and enhancing your home's security.
• Reduced Condensation: The warmer inner pane of glass helps to minimise condensation build-up.

Ready to Get a Quote for Your Double Glazing Project?

At Riverside Bifolds, we pride ourselves on providing high-quality double glazing solutions tailored to your specific needs and budget. We offer a wide range of uPVC and aluminium windows in various styles and finishes, along with expert installation.

Contact us today for a free, no-obligation quote. Our team will be happy to discuss your requirements, provide detailed pricing based on your chosen materials and specifications, and help you find the perfect double glazing solution for your home in Southampton and the surrounding areas.

Call us on 02381785572 or fill out our online contact form to begin your journey to a more comfortable, energy-efficient home!